1417 lines
55 KiB
PHP
1417 lines
55 KiB
PHP
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<?php
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/**
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* @file
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* Field attach API, allowing entities (nodes, users, ...) to be 'fieldable'.
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*/
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/**
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* Exception thrown by field_attach_validate() on field validation errors.
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*/
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class FieldValidationException extends FieldException {
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var $errors;
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/**
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* Constructor for FieldValidationException.
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*
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* @param $errors
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* An array of field validation errors, keyed by field name and
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* delta that contains two keys:
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* - 'error': A machine-readable error code string, prefixed by
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* the field module name. A field widget may use this code to decide
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* how to report the error.
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* - 'message': A human-readable error message such as to be
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* passed to form_error() for the appropriate form element.
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*/
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function __construct($errors) {
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$this->errors = $errors;
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parent::__construct(t('Field validation errors'));
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}
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}
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/**
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* @defgroup field_storage Field Storage API
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* @{
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* Implement a storage engine for Field API data.
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*
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* The Field Attach API uses the Field Storage API to perform all "database
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* access". Each Field Storage API hook function defines a primitive database
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* operation such as read, write, or delete. The default field storage module,
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* field_sql_storage.module, uses the local SQL database to implement these
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* operations, but alternative field storage backends can choose to represent
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* the data in SQL differently or use a completely different storage mechanism
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* such as a cloud-based database.
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*
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* Each field defines which storage backend it uses. The Drupal system variable
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* 'field_storage_default' identifies the storage backend used by default.
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*
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* See @link field Field API @endlink for information about the other parts of
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* the Field API.
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*/
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/**
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* Argument for an update operation.
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*
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* This is used in hook_field_storage_write when updating an
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* existing entity.
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*/
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define('FIELD_STORAGE_UPDATE', 'update');
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/**
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* Argument for an insert operation.
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*
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* This is used in hook_field_storage_write when inserting a new entity.
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*/
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define('FIELD_STORAGE_INSERT', 'insert');
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/**
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* @} End of "defgroup field_storage".
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*/
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/**
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* @defgroup field_attach Field Attach API
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* @{
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* Operate on Field API data attached to Drupal entities.
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*
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* Field Attach API functions load, store, display, generate Field API
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* structures, and perform a variety of other functions for field data attached
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* to individual entities.
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*
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* Field Attach API functions generally take $entity_type and $entity arguments
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* along with additional function-specific arguments. $entity_type is the type
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* of the fieldable entity, such as 'node' or 'user', and $entity is the entity
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* itself.
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*
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* hook_entity_info() is the central place for entity types to define if and
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* how Field API should operate on their entity objects. Notably, the
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* 'fieldable' property needs to be set to TRUE.
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*
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* The Field Attach API uses the concept of bundles: the set of fields for a
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* given entity is defined on a per-bundle basis. The collection of bundles for
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* an entity type is defined its hook_entity_info() implementation. For
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* instance, node_entity_info() exposes each node type as its own bundle. This
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* means that the set of fields of a node is determined by the node type. The
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* Field API reads the bundle name for a given entity from a particular
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* property of the entity object, and hook_entity_info() defines which property
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* to use. For instance, node_entity_info() specifies:
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* @code $info['entity keys']['bundle'] = 'type'@endcode
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* This indicates that for a particular node object, the bundle name can be
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* found in $node->type. This property can be omitted if the entity type only
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* exposes a single bundle (all entities of this type have the same collection
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* of fields). This is the case for the 'user' entity type.
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*
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* Most Field Attach API functions define a corresponding hook function that
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* allows any module to act on Field Attach operations for any entity after the
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* operation is complete, and access or modify all the field, form, or display
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* data for that entity and operation. For example, field_attach_view() invokes
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* hook_field_attach_view_alter(). These all-module hooks are distinct from
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* those of the Field Types API, such as hook_field_load(), that are only
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* invoked for the module that defines a specific field type.
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*
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* field_attach_load(), field_attach_insert(), and field_attach_update() also
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* define pre-operation hooks, e.g. hook_field_attach_pre_load(). These hooks
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* run before the corresponding Field Storage API and Field Type API
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* operations. They allow modules to define additional storage locations (e.g.
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* denormalizing, mirroring) for field data on a per-field basis. They also
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* allow modules to take over field storage completely by instructing other
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* implementations of the same hook and the Field Storage API itself not to
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* operate on specified fields.
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*
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* The pre-operation hooks do not make the Field Storage API irrelevant. The
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* Field Storage API is essentially the "fallback mechanism" for any fields
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* that aren't being intercepted explicitly by pre-operation hooks.
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*
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* @link field_language Field Language API @endlink provides information about
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* the structure of field objects.
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*
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* See @link field Field API @endlink for information about the other parts of
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* the Field API.
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*/
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/**
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* Invoke a field hook.
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*
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* @param $op
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* Possible operations include:
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* - form
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* - validate
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* - presave
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* - insert
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* - update
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* - delete
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* - delete revision
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* - view
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* - prepare translation
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* @param $entity_type
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* The type of $entity; e.g. 'node' or 'user'.
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* @param $entity
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* The fully formed $entity_type entity.
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* @param $a
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* - The $form in the 'form' operation.
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* - The value of $view_mode in the 'view' operation.
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* - Otherwise NULL.
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* @param $b
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* - The $form_state in the 'submit' operation.
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* - Otherwise NULL.
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* @param $options
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* An associative array of additional options, with the following keys:
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* - 'field_name': The name of the field whose operation should be
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* invoked. By default, the operation is invoked on all the fields
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* in the entity's bundle. NOTE: This option is not compatible with
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* the 'deleted' option; the 'field_id' option should be used
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* instead.
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* - 'field_id': The id of the field whose operation should be
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* invoked. By default, the operation is invoked on all the fields
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* in the entity's' bundles.
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* - 'default': A boolean value, specifying which implementation of
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* the operation should be invoked.
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* - if FALSE (default), the field types implementation of the operation
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* will be invoked (hook_field_[op])
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* - If TRUE, the default field implementation of the field operation
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* will be invoked (field_default_[op])
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* Internal use only. Do not explicitely set to TRUE, but use
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* _field_invoke_default() instead.
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* - 'deleted': If TRUE, the function will operate on deleted fields
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* as well as non-deleted fields. If unset or FALSE, only
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* non-deleted fields are operated on.
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* - 'language': A language code or an array of language codes keyed by field
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* name. It will be used to narrow down to a single value the available
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* languages to act on.
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*/
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function _field_invoke($op, $entity_type, $entity, &$a = NULL, &$b = NULL, $options = array()) {
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// Merge default options.
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$default_options = array(
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'default' => FALSE,
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'deleted' => FALSE,
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'language' => NULL,
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);
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$options += $default_options;
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// Determine the list of instances to iterate on.
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list(, , $bundle) = entity_extract_ids($entity_type, $entity);
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$instances = _field_invoke_get_instances($entity_type, $bundle, $options);
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// Iterate through the instances and collect results.
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$return = array();
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foreach ($instances as $instance) {
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// field_info_field() is not available for deleted fields, so use
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// field_info_field_by_id().
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$field = field_info_field_by_id($instance['field_id']);
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$field_name = $field['field_name'];
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$function = $options['default'] ? 'field_default_' . $op : $field['module'] . '_field_' . $op;
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if (function_exists($function)) {
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// Determine the list of languages to iterate on.
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$available_languages = field_available_languages($entity_type, $field);
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$languages = _field_language_suggestion($available_languages, $options['language'], $field_name);
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foreach ($languages as $langcode) {
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$items = isset($entity->{$field_name}[$langcode]) ? $entity->{$field_name}[$langcode] : array();
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$result = $function($entity_type, $entity, $field, $instance, $langcode, $items, $a, $b);
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if (isset($result)) {
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// For hooks with array results, we merge results together.
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// For hooks with scalar results, we collect results in an array.
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if (is_array($result)) {
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$return = array_merge($return, $result);
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}
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else {
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$return[] = $result;
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}
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}
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// Populate $items back in the field values, but avoid replacing missing
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// fields with an empty array (those are not equivalent on update).
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if ($items !== array() || isset($entity->{$field_name}[$langcode])) {
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$entity->{$field_name}[$langcode] = $items;
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}
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}
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}
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}
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return $return;
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}
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/**
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* Invoke a field hook across fields on multiple entities.
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*
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* @param $op
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* Possible operations include:
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* - load
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* - prepare_view
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* For all other operations, use _field_invoke() / field_invoke_default()
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* instead.
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* @param $entity_type
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* The type of $entity; e.g. 'node' or 'user'.
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* @param $entities
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* An array of entities, keyed by entity id.
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* @param $a
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* - The $age parameter in the 'load' operation.
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* - Otherwise NULL.
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* @param $b
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* Currently always NULL.
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* @param $options
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* An associative array of additional options, with the following keys:
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* - 'field_name': The name of the field whose operation should be
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* invoked. By default, the operation is invoked on all the fields
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* in the entity's bundle. NOTE: This option is not compatible with
|
||
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* the 'deleted' option; the 'field_id' option should be used instead.
|
||
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* - 'field_id': The id of the field whose operation should be
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* invoked. By default, the operation is invoked on all the fields
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* in the entity's' bundles.
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* - 'default': A boolean value, specifying which implementation of
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* the operation should be invoked.
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* - if FALSE (default), the field types implementation of the operation
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* will be invoked (hook_field_[op])
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* - If TRUE, the default field implementation of the field operation
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* will be invoked (field_default_[op])
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* Internal use only. Do not explicitely set to TRUE, but use
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* _field_invoke_multiple_default() instead.
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* - 'deleted': If TRUE, the function will operate on deleted fields
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* as well as non-deleted fields. If unset or FALSE, only
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* non-deleted fields are operated on.
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* - 'language': A language code or an array of arrays of language codes keyed
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* by entity id and field name. It will be used to narrow down to a single
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* value the available languages to act on.
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*
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* @return
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* An array of returned values keyed by entity id.
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*/
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function _field_invoke_multiple($op, $entity_type, $entities, &$a = NULL, &$b = NULL, $options = array()) {
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// Merge default options.
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$default_options = array(
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'default' => FALSE,
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'deleted' => FALSE,
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'language' => NULL,
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);
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$options += $default_options;
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$fields = array();
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$grouped_instances = array();
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$grouped_entities = array();
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$grouped_items = array();
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$return = array();
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// Go through the entities and collect the fields on which the hook should be
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// invoked.
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//
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// We group fields by id, not by name, because this function can operate on
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// deleted fields which may have non-unique names. However, entities can only
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// contain data for a single field for each name, even if that field
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// is deleted, so we reference field data via the
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// $entity->$field_name property.
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foreach ($entities as $entity) {
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// Determine the list of instances to iterate on.
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list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
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$instances = _field_invoke_get_instances($entity_type, $bundle, $options);
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foreach ($instances as $instance) {
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$field_id = $instance['field_id'];
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$field_name = $instance['field_name'];
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$field = field_info_field_by_id($field_id);
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$function = $options['default'] ? 'field_default_' . $op : $field['module'] . '_field_' . $op;
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if (function_exists($function)) {
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// Add the field to the list of fields to invoke the hook on.
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if (!isset($fields[$field_id])) {
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$fields[$field_id] = $field;
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}
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// Extract the field values into a separate variable, easily accessed
|
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// by hook implementations.
|
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// Unless a language suggestion is provided we iterate on all the
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// available languages.
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$available_languages = field_available_languages($entity_type, $field);
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$language = is_array($options['language']) && !empty($options['language'][$id]) ? $options['language'][$id] : $options['language'];
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$languages = _field_language_suggestion($available_languages, $language, $field_name);
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foreach ($languages as $langcode) {
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$grouped_items[$field_id][$langcode][$id] = isset($entity->{$field_name}[$langcode]) ? $entity->{$field_name}[$langcode] : array();
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// Group the instances and entities corresponding to the current
|
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// field.
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$grouped_instances[$field_id][$langcode][$id] = $instance;
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$grouped_entities[$field_id][$langcode][$id] = $entities[$id];
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}
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}
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}
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// Initialize the return value for each entity.
|
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$return[$id] = array();
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}
|
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// For each field, invoke the field hook and collect results.
|
||
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foreach ($fields as $field_id => $field) {
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$field_name = $field['field_name'];
|
||
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$function = $options['default'] ? 'field_default_' . $op : $field['module'] . '_field_' . $op;
|
||
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// Iterate over all the field translations.
|
||
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foreach ($grouped_items[$field_id] as $langcode => &$items) {
|
||
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$entities = $grouped_entities[$field_id][$langcode];
|
||
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$instances = $grouped_instances[$field_id][$langcode];
|
||
|
|
$results = $function($entity_type, $entities, $field, $instances, $langcode, $items, $a, $b);
|
||
|
|
if (isset($results)) {
|
||
|
|
// Collect results by entity.
|
||
|
|
// For hooks with array results, we merge results together.
|
||
|
|
// For hooks with scalar results, we collect results in an array.
|
||
|
|
foreach ($results as $id => $result) {
|
||
|
|
if (is_array($result)) {
|
||
|
|
$return[$id] = array_merge($return[$id], $result);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$return[$id][] = $result;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Populate field values back in the entities, but avoid replacing missing
|
||
|
|
// fields with an empty array (those are not equivalent on update).
|
||
|
|
foreach ($grouped_entities[$field_id] as $langcode => $entities) {
|
||
|
|
foreach ($entities as $id => $entity) {
|
||
|
|
if ($grouped_items[$field_id][$langcode][$id] !== array() || isset($entity->{$field_name}[$langcode])) {
|
||
|
|
$entity->{$field_name}[$langcode] = $grouped_items[$field_id][$langcode][$id];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Invoke field.module's version of a field hook.
|
||
|
|
*
|
||
|
|
* This function invokes the field_default_[op]() function.
|
||
|
|
* Use _field_invoke() to invoke the field type implementation,
|
||
|
|
* hook_field_[op]().
|
||
|
|
*
|
||
|
|
* @see _field_invoke()
|
||
|
|
*/
|
||
|
|
function _field_invoke_default($op, $entity_type, $entity, &$a = NULL, &$b = NULL, $options = array()) {
|
||
|
|
$options['default'] = TRUE;
|
||
|
|
return _field_invoke($op, $entity_type, $entity, $a, $b, $options);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Invoke field.module's version of a field hook on multiple entities.
|
||
|
|
*
|
||
|
|
* This function invokes the field_default_[op]() function.
|
||
|
|
* Use _field_invoke_multiple() to invoke the field type implementation,
|
||
|
|
* hook_field_[op]().
|
||
|
|
*
|
||
|
|
* @see _field_invoke_multiple()
|
||
|
|
*/
|
||
|
|
function _field_invoke_multiple_default($op, $entity_type, $entities, &$a = NULL, &$b = NULL, $options = array()) {
|
||
|
|
$options['default'] = TRUE;
|
||
|
|
return _field_invoke_multiple($op, $entity_type, $entities, $a, $b, $options);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Helper for _field_invoke(): retrieves a list of instances to operate on.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The entity type.
|
||
|
|
* @param $bundle
|
||
|
|
* The bundle name.
|
||
|
|
* @param $options
|
||
|
|
* An associative array of options, as provided to _field_invoke(). Only the
|
||
|
|
* following keys are considered :
|
||
|
|
* - deleted
|
||
|
|
* - field_name
|
||
|
|
* - field_id
|
||
|
|
* See _field_invoke() for details.
|
||
|
|
*
|
||
|
|
* @return
|
||
|
|
* The array of selected instance definitions.
|
||
|
|
*/
|
||
|
|
function _field_invoke_get_instances($entity_type, $bundle, $options) {
|
||
|
|
if ($options['deleted']) {
|
||
|
|
// Deleted fields are not included in field_info_instances(), and need to
|
||
|
|
// be fetched from the database with field_read_instances().
|
||
|
|
$params = array('entity_type' => $entity_type, 'bundle' => $bundle);
|
||
|
|
if (isset($options['field_id'])) {
|
||
|
|
// Single-field mode by field id: field_read_instances() does the filtering.
|
||
|
|
// Single-field mode by field name is not compatible with the 'deleted'
|
||
|
|
// option.
|
||
|
|
$params['field_id'] = $options['field_id'];
|
||
|
|
}
|
||
|
|
$instances = field_read_instances($params, array('include_deleted' => TRUE));
|
||
|
|
}
|
||
|
|
elseif (isset($options['field_name'])) {
|
||
|
|
// Single-field mode by field name: field_info_instance() does the
|
||
|
|
// filtering.
|
||
|
|
$instances = array(field_info_instance($entity_type, $options['field_name'], $bundle));
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$instances = field_info_instances($entity_type, $bundle);
|
||
|
|
if (isset($options['field_id'])) {
|
||
|
|
// Single-field mode by field id: we need to loop on each instance to
|
||
|
|
// find the right one.
|
||
|
|
foreach ($instances as $instance) {
|
||
|
|
if ($instance['field_id'] == $options['field_id']) {
|
||
|
|
$instances = array($instance);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $instances;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Add form elements for all fields for an entity to a form structure.
|
||
|
|
*
|
||
|
|
* The form elements for the entity's fields are added by reference as direct
|
||
|
|
* children in the $form parameter. This parameter can be a full form structure
|
||
|
|
* (most common case for entity edit forms), or a sub-element of a larger form.
|
||
|
|
*
|
||
|
|
* By default, submitted field values appear at the top-level of
|
||
|
|
* $form_state['values']. A different location within $form_state['values'] can
|
||
|
|
* be specified by setting the '#parents' property on the incoming $form
|
||
|
|
* parameter. Because of name clashes, two instances of the same field cannot
|
||
|
|
* appear within the same $form element, or within the same '#parents' space.
|
||
|
|
*
|
||
|
|
* For each call to field_attach_form(), field values are processed by calling
|
||
|
|
* field_attach_form_validate() and field_attach_submit() on the same $form
|
||
|
|
* element.
|
||
|
|
*
|
||
|
|
* Sample resulting structure in $form:
|
||
|
|
* @code
|
||
|
|
* '#parents' => The location of field values in $form_state['values'],
|
||
|
|
* '#entity_type' => The name of the entity type,
|
||
|
|
* '#bundle' => The name of the bundle,
|
||
|
|
* // One sub-array per field appearing in the entity, keyed by field name.
|
||
|
|
* // The structure of the array differs slightly depending on whether the
|
||
|
|
* // widget is 'single-value' (provides the input for one field value,
|
||
|
|
* // most common case), and will therefore be repeated as many times as
|
||
|
|
* // needed, or 'multiple-values' (one single widget allows the input of
|
||
|
|
* // several values, e.g checkboxes, select box...).
|
||
|
|
* // The sub-array is nested into a $langcode key where $langcode has the
|
||
|
|
* // same value of the $langcode parameter above.
|
||
|
|
* // The '#language' key holds the same value of $langcode and it is used
|
||
|
|
* // to access the field sub-array when $langcode is unknown.
|
||
|
|
* 'field_foo' => array(
|
||
|
|
* '#tree' => TRUE,
|
||
|
|
* '#field_name' => The name of the field,
|
||
|
|
* '#language' => $langcode,
|
||
|
|
* $langcode => array(
|
||
|
|
* '#field_name' => The name of the field,
|
||
|
|
* '#language' => $langcode,
|
||
|
|
* '#field_parents' => The 'parents' space for the field in the form,
|
||
|
|
* equal to the #parents property of the $form parameter received by
|
||
|
|
* field_attach_form(),
|
||
|
|
* '#required' => Whether or not the field is required,
|
||
|
|
* '#title' => The label of the field instance,
|
||
|
|
* '#description' => The description text for the field instance,
|
||
|
|
*
|
||
|
|
* // Only for 'single' widgets:
|
||
|
|
* '#theme' => 'field_multiple_value_form',
|
||
|
|
* '#cardinality' => The field cardinality,
|
||
|
|
* // One sub-array per copy of the widget, keyed by delta.
|
||
|
|
* 0 => array(
|
||
|
|
* '#entity_type' => The name of the entity type,
|
||
|
|
* '#bundle' => The name of the bundle,
|
||
|
|
* '#field_name' => The name of the field,
|
||
|
|
* '#field_parents' => The 'parents' space for the field in the form,
|
||
|
|
* equal to the #parents property of the $form parameter received by
|
||
|
|
* field_attach_form(),
|
||
|
|
* '#title' => The title to be displayed by the widget,
|
||
|
|
* '#default_value' => The field value for delta 0,
|
||
|
|
* '#required' => Whether the widget should be marked required,
|
||
|
|
* '#delta' => 0,
|
||
|
|
* '#columns' => The array of field columns,
|
||
|
|
* // The remaining elements in the sub-array depend on the widget.
|
||
|
|
* '#type' => The type of the widget,
|
||
|
|
* ...
|
||
|
|
* ),
|
||
|
|
* 1 => array(
|
||
|
|
* ...
|
||
|
|
* ),
|
||
|
|
*
|
||
|
|
* // Only for multiple widgets:
|
||
|
|
* '#entity_type' => The name of the entity type,
|
||
|
|
* '#bundle' => $instance['bundle'],
|
||
|
|
* '#columns' => array_keys($field['columns']),
|
||
|
|
* // The remaining elements in the sub-array depend on the widget.
|
||
|
|
* '#type' => The type of the widget,
|
||
|
|
* ...
|
||
|
|
* ),
|
||
|
|
* ...
|
||
|
|
* ),
|
||
|
|
* )
|
||
|
|
* @endcode
|
||
|
|
*
|
||
|
|
* Additionally, some processing data is placed in $form_state, and can be
|
||
|
|
* accessed by field_form_get_state() and field_form_set_state().
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity for which to load form elements, used to initialize
|
||
|
|
* default form values.
|
||
|
|
* @param $form
|
||
|
|
* The form structure to fill in. This can be a full form structure, or a
|
||
|
|
* sub-element of a larger form. The #parents property can be set to control
|
||
|
|
* the location of submitted field values within $form_state['values']. If
|
||
|
|
* not specified, $form['#parents'] is set to an empty array, placing field
|
||
|
|
* values at the top-level of $form_state['values'].
|
||
|
|
* @param $form_state
|
||
|
|
* An associative array containing the current state of the form.
|
||
|
|
* @param $langcode
|
||
|
|
* The language the field values are going to be entered, if no language
|
||
|
|
* is provided the default site language will be used.
|
||
|
|
* @param array $options
|
||
|
|
* An associative array of additional options. See _field_invoke() for
|
||
|
|
* details.
|
||
|
|
*
|
||
|
|
* @see field_form_get_state()
|
||
|
|
* @see field_form_set_state()
|
||
|
|
*/
|
||
|
|
function field_attach_form($entity_type, $entity, &$form, &$form_state, $langcode = NULL, $options = array()) {
|
||
|
|
// Validate $options since this is a new parameter added after Drupal 7 was
|
||
|
|
// released.
|
||
|
|
$options = is_array($options) ? $options : array();
|
||
|
|
|
||
|
|
// Set #parents to 'top-level' by default.
|
||
|
|
$form += array('#parents' => array());
|
||
|
|
|
||
|
|
// If no language is provided use the default site language.
|
||
|
|
$options['language'] = field_valid_language($langcode);
|
||
|
|
$form += (array) _field_invoke_default('form', $entity_type, $entity, $form, $form_state, $options);
|
||
|
|
|
||
|
|
// Add custom weight handling.
|
||
|
|
list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
|
||
|
|
$form['#pre_render'][] = '_field_extra_fields_pre_render';
|
||
|
|
$form['#entity_type'] = $entity_type;
|
||
|
|
$form['#bundle'] = $bundle;
|
||
|
|
|
||
|
|
// Let other modules make changes to the form.
|
||
|
|
// Avoid module_invoke_all() to let parameters be taken by reference.
|
||
|
|
foreach (module_implements('field_attach_form') as $module) {
|
||
|
|
$function = $module . '_field_attach_form';
|
||
|
|
$function($entity_type, $entity, $form, $form_state, $langcode);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Loads fields for the current revisions of a group of entities.
|
||
|
|
*
|
||
|
|
* Loads all fields for each entity object in a group of a single entity type.
|
||
|
|
* The loaded field values are added directly to the entity objects.
|
||
|
|
*
|
||
|
|
* field_attach_load() is automatically called by the default entity controller
|
||
|
|
* class, and thus, in most cases, doesn't need to be explicitly called by the
|
||
|
|
* entity type module.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g., 'node' or 'user'.
|
||
|
|
* @param $entities
|
||
|
|
* An array of entities for which to load fields, keyed by entity ID.
|
||
|
|
* Each entity needs to have its 'bundle', 'id' and (if applicable)
|
||
|
|
* 'revision' keys filled in. The function adds the loaded field data
|
||
|
|
* directly in the entity objects of the $entities array.
|
||
|
|
* @param $age
|
||
|
|
* FIELD_LOAD_CURRENT to load the most recent revision for all
|
||
|
|
* fields, or FIELD_LOAD_REVISION to load the version indicated by
|
||
|
|
* each entity. Defaults to FIELD_LOAD_CURRENT; use
|
||
|
|
* field_attach_load_revision() instead of passing FIELD_LOAD_REVISION.
|
||
|
|
* @param $options
|
||
|
|
* An associative array of additional options, with the following keys:
|
||
|
|
* - 'field_id': The field ID that should be loaded, instead of
|
||
|
|
* loading all fields, for each entity. Note that returned entities
|
||
|
|
* may contain data for other fields, for example if they are read
|
||
|
|
* from a cache.
|
||
|
|
* - 'deleted': If TRUE, the function will operate on deleted fields
|
||
|
|
* as well as non-deleted fields. If unset or FALSE, only
|
||
|
|
* non-deleted fields are operated on.
|
||
|
|
*/
|
||
|
|
function field_attach_load($entity_type, $entities, $age = FIELD_LOAD_CURRENT, $options = array()) {
|
||
|
|
$load_current = $age == FIELD_LOAD_CURRENT;
|
||
|
|
|
||
|
|
// Merge default options.
|
||
|
|
$default_options = array(
|
||
|
|
'deleted' => FALSE,
|
||
|
|
);
|
||
|
|
$options += $default_options;
|
||
|
|
|
||
|
|
$info = entity_get_info($entity_type);
|
||
|
|
// Only the most current revision of non-deleted fields for cacheable entity
|
||
|
|
// types can be cached.
|
||
|
|
$cache_read = $load_current && $info['field cache'] && empty($options['deleted']);
|
||
|
|
// In addition, do not write to the cache when loading a single field.
|
||
|
|
$cache_write = $cache_read && !isset($options['field_id']);
|
||
|
|
|
||
|
|
if (empty($entities)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Assume all entities will need to be queried. Entities found in the cache
|
||
|
|
// will be removed from the list.
|
||
|
|
$queried_entities = $entities;
|
||
|
|
|
||
|
|
// Fetch available entities from cache, if applicable.
|
||
|
|
if ($cache_read) {
|
||
|
|
// Build the list of cache entries to retrieve.
|
||
|
|
$cids = array();
|
||
|
|
foreach ($entities as $id => $entity) {
|
||
|
|
$cids[] = "field:$entity_type:$id";
|
||
|
|
}
|
||
|
|
$cache = cache_get_multiple($cids, 'cache_field');
|
||
|
|
// Put the cached field values back into the entities and remove them from
|
||
|
|
// the list of entities to query.
|
||
|
|
foreach ($entities as $id => $entity) {
|
||
|
|
$cid = "field:$entity_type:$id";
|
||
|
|
if (isset($cache[$cid])) {
|
||
|
|
unset($queried_entities[$id]);
|
||
|
|
foreach ($cache[$cid]->data as $field_name => $values) {
|
||
|
|
$entity->$field_name = $values;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Fetch other entities from their storage location.
|
||
|
|
if ($queried_entities) {
|
||
|
|
// The invoke order is:
|
||
|
|
// - hook_field_storage_pre_load()
|
||
|
|
// - storage backend's hook_field_storage_load()
|
||
|
|
// - field-type module's hook_field_load()
|
||
|
|
// - hook_field_attach_load()
|
||
|
|
|
||
|
|
// Invoke hook_field_storage_pre_load(): let any module load field
|
||
|
|
// data before the storage engine, accumulating along the way.
|
||
|
|
$skip_fields = array();
|
||
|
|
foreach (module_implements('field_storage_pre_load') as $module) {
|
||
|
|
$function = $module . '_field_storage_pre_load';
|
||
|
|
$function($entity_type, $queried_entities, $age, $skip_fields, $options);
|
||
|
|
}
|
||
|
|
|
||
|
|
$instances = array();
|
||
|
|
|
||
|
|
// Collect the storage backends used by the remaining fields in the entities.
|
||
|
|
$storages = array();
|
||
|
|
foreach ($queried_entities as $entity) {
|
||
|
|
list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
|
||
|
|
$instances = _field_invoke_get_instances($entity_type, $bundle, $options);
|
||
|
|
|
||
|
|
foreach ($instances as $instance) {
|
||
|
|
$field_name = $instance['field_name'];
|
||
|
|
$field_id = $instance['field_id'];
|
||
|
|
// Make sure all fields are present at least as empty arrays.
|
||
|
|
if (!isset($queried_entities[$id]->{$field_name})) {
|
||
|
|
$queried_entities[$id]->{$field_name} = array();
|
||
|
|
}
|
||
|
|
// Collect the storage backend if the field has not been loaded yet.
|
||
|
|
if (!isset($skip_fields[$field_id])) {
|
||
|
|
$field = field_info_field_by_id($field_id);
|
||
|
|
$storages[$field['storage']['type']][$field_id][] = $load_current ? $id : $vid;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Invoke hook_field_storage_load() on the relevant storage backends.
|
||
|
|
foreach ($storages as $storage => $fields) {
|
||
|
|
$storage_info = field_info_storage_types($storage);
|
||
|
|
module_invoke($storage_info['module'], 'field_storage_load', $entity_type, $queried_entities, $age, $fields, $options);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Invoke field-type module's hook_field_load().
|
||
|
|
$null = NULL;
|
||
|
|
_field_invoke_multiple('load', $entity_type, $queried_entities, $age, $null, $options);
|
||
|
|
|
||
|
|
// Invoke hook_field_attach_load(): let other modules act on loading the
|
||
|
|
// entity.
|
||
|
|
module_invoke_all('field_attach_load', $entity_type, $queried_entities, $age, $options);
|
||
|
|
|
||
|
|
// Build cache data.
|
||
|
|
if ($cache_write) {
|
||
|
|
foreach ($queried_entities as $id => $entity) {
|
||
|
|
$data = array();
|
||
|
|
list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
|
||
|
|
$instances = field_info_instances($entity_type, $bundle);
|
||
|
|
foreach ($instances as $instance) {
|
||
|
|
$data[$instance['field_name']] = $queried_entities[$id]->{$instance['field_name']};
|
||
|
|
}
|
||
|
|
$cid = "field:$entity_type:$id";
|
||
|
|
cache_set($cid, $data, 'cache_field');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Load all fields for previous versions of a group of entities.
|
||
|
|
*
|
||
|
|
* Loading different versions of the same entities is not supported, and should
|
||
|
|
* be done by separate calls to the function.
|
||
|
|
*
|
||
|
|
* field_attach_load_revision() is automatically called by the default entity
|
||
|
|
* controller class, and thus, in most cases, doesn't need to be explicitly
|
||
|
|
* called by the entity type module.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entities
|
||
|
|
* An array of entities for which to load fields, keyed by entity ID. Each
|
||
|
|
* entity needs to have its 'bundle', 'id' and (if applicable) 'revision'
|
||
|
|
* keys filled. The function adds the loaded field data directly in the
|
||
|
|
* entity objects of the $entities array.
|
||
|
|
* @param $options
|
||
|
|
* An associative array of additional options. See field_attach_load() for
|
||
|
|
* details.
|
||
|
|
*/
|
||
|
|
function field_attach_load_revision($entity_type, $entities, $options = array()) {
|
||
|
|
return field_attach_load($entity_type, $entities, FIELD_LOAD_REVISION, $options);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Perform field validation against the field data in an entity.
|
||
|
|
*
|
||
|
|
* This function does not perform field widget validation on form
|
||
|
|
* submissions. It is intended to be called during API save
|
||
|
|
* operations. Use field_attach_form_validate() to validate form
|
||
|
|
* submissions.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity with fields to validate.
|
||
|
|
* @throws FieldValidationException
|
||
|
|
* If validation errors are found, a FieldValidationException is thrown. The
|
||
|
|
* 'errors' property contains the array of errors, keyed by field name,
|
||
|
|
* language and delta.
|
||
|
|
* @param array $options
|
||
|
|
* An associative array of additional options. See _field_invoke() for
|
||
|
|
* details.
|
||
|
|
*/
|
||
|
|
function field_attach_validate($entity_type, $entity, $options = array()) {
|
||
|
|
// Validate $options since this is a new parameter added after Drupal 7 was
|
||
|
|
// released.
|
||
|
|
$options = is_array($options) ? $options : array();
|
||
|
|
|
||
|
|
$errors = array();
|
||
|
|
// Check generic, field-type-agnostic errors first.
|
||
|
|
$null = NULL;
|
||
|
|
_field_invoke_default('validate', $entity_type, $entity, $errors, $null, $options);
|
||
|
|
// Check field-type specific errors.
|
||
|
|
_field_invoke('validate', $entity_type, $entity, $errors, $null, $options);
|
||
|
|
|
||
|
|
// Let other modules validate the entity.
|
||
|
|
// Avoid module_invoke_all() to let $errors be taken by reference.
|
||
|
|
foreach (module_implements('field_attach_validate') as $module) {
|
||
|
|
$function = $module . '_field_attach_validate';
|
||
|
|
$function($entity_type, $entity, $errors);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($errors) {
|
||
|
|
throw new FieldValidationException($errors);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Perform field validation against form-submitted field values.
|
||
|
|
*
|
||
|
|
* There are two levels of validation for fields in forms: widget
|
||
|
|
* validation, and field validation.
|
||
|
|
* - Widget validation steps are specific to a given widget's own form
|
||
|
|
* structure and UI metaphors. They are executed through FAPI's
|
||
|
|
* #element_validate property during normal form validation.
|
||
|
|
* - Field validation steps are common to a given field type, independently of
|
||
|
|
* the specific widget being used in a given form. They are defined in the
|
||
|
|
* field type's implementation of hook_field_validate().
|
||
|
|
*
|
||
|
|
* This function performs field validation in the context of a form
|
||
|
|
* submission. It converts field validation errors into form errors
|
||
|
|
* on the correct form elements. Fieldable entity types should call
|
||
|
|
* this function during their own form validation function.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity being submitted. The 'bundle', 'id' and (if applicable)
|
||
|
|
* 'revision' keys should be present. The actual field values will be read
|
||
|
|
* from $form_state['values'].
|
||
|
|
* @param $form
|
||
|
|
* The form structure where field elements are attached to. This might be a
|
||
|
|
* full form structure, or a sub-element of a larger form.
|
||
|
|
* @param $form_state
|
||
|
|
* An associative array containing the current state of the form.
|
||
|
|
* @param array $options
|
||
|
|
* An associative array of additional options. See _field_invoke() for
|
||
|
|
* details.
|
||
|
|
*/
|
||
|
|
function field_attach_form_validate($entity_type, $entity, $form, &$form_state, $options = array()) {
|
||
|
|
// Validate $options since this is a new parameter added after Drupal 7 was
|
||
|
|
// released.
|
||
|
|
$options = is_array($options) ? $options : array();
|
||
|
|
|
||
|
|
// Extract field values from submitted values.
|
||
|
|
_field_invoke_default('extract_form_values', $entity_type, $entity, $form, $form_state);
|
||
|
|
|
||
|
|
// Perform field_level validation.
|
||
|
|
try {
|
||
|
|
field_attach_validate($entity_type, $entity, $options);
|
||
|
|
}
|
||
|
|
catch (FieldValidationException $e) {
|
||
|
|
// Pass field-level validation errors back to widgets for accurate error
|
||
|
|
// flagging.
|
||
|
|
foreach ($e->errors as $field_name => $field_errors) {
|
||
|
|
foreach ($field_errors as $langcode => $errors) {
|
||
|
|
$field_state = field_form_get_state($form['#parents'], $field_name, $langcode, $form_state);
|
||
|
|
$field_state['errors'] = $errors;
|
||
|
|
field_form_set_state($form['#parents'], $field_name, $langcode, $form_state, $field_state);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
_field_invoke_default('form_errors', $entity_type, $entity, $form, $form_state, $options);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Perform necessary operations on field data submitted by a form.
|
||
|
|
*
|
||
|
|
* Currently, this accounts for drag-and-drop reordering of
|
||
|
|
* field values, and filtering of empty values.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity being submitted. The 'bundle', 'id' and (if applicable)
|
||
|
|
* 'revision' keys should be present. The actual field values will be read
|
||
|
|
* from $form_state['values'].
|
||
|
|
* @param $form
|
||
|
|
* The form structure where field elements are attached to. This might be a
|
||
|
|
* full form structure, or a sub-element of a larger form.
|
||
|
|
* @param $form_state
|
||
|
|
* An associative array containing the current state of the form.
|
||
|
|
* @param array $options
|
||
|
|
* An associative array of additional options. See _field_invoke() for
|
||
|
|
* details.
|
||
|
|
*/
|
||
|
|
function field_attach_submit($entity_type, $entity, $form, &$form_state, $options = array()) {
|
||
|
|
// Validate $options since this is a new parameter added after Drupal 7 was
|
||
|
|
// released.
|
||
|
|
$options = is_array($options) ? $options : array();
|
||
|
|
|
||
|
|
// Extract field values from submitted values.
|
||
|
|
_field_invoke_default('extract_form_values', $entity_type, $entity, $form, $form_state, $options);
|
||
|
|
|
||
|
|
_field_invoke_default('submit', $entity_type, $entity, $form, $form_state, $options);
|
||
|
|
|
||
|
|
// Let other modules act on submitting the entity.
|
||
|
|
// Avoid module_invoke_all() to let $form_state be taken by reference.
|
||
|
|
foreach (module_implements('field_attach_submit') as $module) {
|
||
|
|
$function = $module . '_field_attach_submit';
|
||
|
|
$function($entity_type, $entity, $form, $form_state);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Perform necessary operations just before fields data get saved.
|
||
|
|
*
|
||
|
|
* We take no specific action here, we just give other
|
||
|
|
* modules the opportunity to act.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity with fields to process.
|
||
|
|
*/
|
||
|
|
function field_attach_presave($entity_type, $entity) {
|
||
|
|
_field_invoke('presave', $entity_type, $entity);
|
||
|
|
|
||
|
|
// Let other modules act on presaving the entity.
|
||
|
|
module_invoke_all('field_attach_presave', $entity_type, $entity);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Save field data for a new entity.
|
||
|
|
*
|
||
|
|
* The passed-in entity must already contain its id and (if applicable)
|
||
|
|
* revision id attributes.
|
||
|
|
* Default values (if any) will be saved for fields not present in the
|
||
|
|
* $entity.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity with fields to save.
|
||
|
|
* @return
|
||
|
|
* Default values (if any) will be added to the $entity parameter for fields
|
||
|
|
* it leaves unspecified.
|
||
|
|
*/
|
||
|
|
function field_attach_insert($entity_type, $entity) {
|
||
|
|
_field_invoke_default('insert', $entity_type, $entity);
|
||
|
|
_field_invoke('insert', $entity_type, $entity);
|
||
|
|
|
||
|
|
list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
|
||
|
|
|
||
|
|
// Let any module insert field data before the storage engine, accumulating
|
||
|
|
// saved fields along the way.
|
||
|
|
$skip_fields = array();
|
||
|
|
foreach (module_implements('field_storage_pre_insert') as $module) {
|
||
|
|
$function = $module . '_field_storage_pre_insert';
|
||
|
|
$function($entity_type, $entity, $skip_fields);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Collect the storage backends used by the remaining fields in the entities.
|
||
|
|
$storages = array();
|
||
|
|
foreach (field_info_instances($entity_type, $bundle) as $instance) {
|
||
|
|
$field = field_info_field_by_id($instance['field_id']);
|
||
|
|
$field_id = $field['id'];
|
||
|
|
$field_name = $field['field_name'];
|
||
|
|
if (!empty($entity->$field_name)) {
|
||
|
|
// Collect the storage backend if the field has not been written yet.
|
||
|
|
if (!isset($skip_fields[$field_id])) {
|
||
|
|
$storages[$field['storage']['type']][$field_id] = $field_id;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Field storage backends save any remaining unsaved fields.
|
||
|
|
foreach ($storages as $storage => $fields) {
|
||
|
|
$storage_info = field_info_storage_types($storage);
|
||
|
|
module_invoke($storage_info['module'], 'field_storage_write', $entity_type, $entity, FIELD_STORAGE_INSERT, $fields);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Let other modules act on inserting the entity.
|
||
|
|
module_invoke_all('field_attach_insert', $entity_type, $entity);
|
||
|
|
|
||
|
|
$entity_info = entity_get_info($entity_type);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Save field data for an existing entity.
|
||
|
|
*
|
||
|
|
* When calling this function outside an entity save operation be sure to
|
||
|
|
* clear caches for the entity:
|
||
|
|
* @code
|
||
|
|
* entity_get_controller($entity_type)->resetCache(array($entity_id))
|
||
|
|
* @endcode
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity with fields to save.
|
||
|
|
*/
|
||
|
|
function field_attach_update($entity_type, $entity) {
|
||
|
|
_field_invoke('update', $entity_type, $entity);
|
||
|
|
|
||
|
|
list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
|
||
|
|
|
||
|
|
// Let any module update field data before the storage engine, accumulating
|
||
|
|
// saved fields along the way.
|
||
|
|
$skip_fields = array();
|
||
|
|
foreach (module_implements('field_storage_pre_update') as $module) {
|
||
|
|
$function = $module . '_field_storage_pre_update';
|
||
|
|
$function($entity_type, $entity, $skip_fields);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Collect the storage backends used by the remaining fields in the entities.
|
||
|
|
$storages = array();
|
||
|
|
foreach (field_info_instances($entity_type, $bundle) as $instance) {
|
||
|
|
$field = field_info_field_by_id($instance['field_id']);
|
||
|
|
$field_id = $field['id'];
|
||
|
|
$field_name = $field['field_name'];
|
||
|
|
// Leave the field untouched if $entity comes with no $field_name property,
|
||
|
|
// but empty the field if it comes as a NULL value or an empty array.
|
||
|
|
// Function property_exists() is slower, so we catch the more frequent
|
||
|
|
// cases where it's an empty array with the faster isset().
|
||
|
|
if (isset($entity->$field_name) || property_exists($entity, $field_name)) {
|
||
|
|
// Collect the storage backend if the field has not been written yet.
|
||
|
|
if (!isset($skip_fields[$field_id])) {
|
||
|
|
$storages[$field['storage']['type']][$field_id] = $field_id;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Field storage backends save any remaining unsaved fields.
|
||
|
|
foreach ($storages as $storage => $fields) {
|
||
|
|
$storage_info = field_info_storage_types($storage);
|
||
|
|
module_invoke($storage_info['module'], 'field_storage_write', $entity_type, $entity, FIELD_STORAGE_UPDATE, $fields);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Let other modules act on updating the entity.
|
||
|
|
module_invoke_all('field_attach_update', $entity_type, $entity);
|
||
|
|
|
||
|
|
$entity_info = entity_get_info($entity_type);
|
||
|
|
if ($entity_info['field cache']) {
|
||
|
|
cache_clear_all("field:$entity_type:$id", 'cache_field');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Delete field data for an existing entity. This deletes all
|
||
|
|
* revisions of field data for the entity.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity whose field data to delete.
|
||
|
|
*/
|
||
|
|
function field_attach_delete($entity_type, $entity) {
|
||
|
|
_field_invoke('delete', $entity_type, $entity);
|
||
|
|
|
||
|
|
list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
|
||
|
|
|
||
|
|
// Collect the storage backends used by the fields in the entities.
|
||
|
|
$storages = array();
|
||
|
|
foreach (field_info_instances($entity_type, $bundle) as $instance) {
|
||
|
|
$field = field_info_field_by_id($instance['field_id']);
|
||
|
|
$field_id = $field['id'];
|
||
|
|
$storages[$field['storage']['type']][$field_id] = $field_id;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Field storage backends delete their data.
|
||
|
|
foreach ($storages as $storage => $fields) {
|
||
|
|
$storage_info = field_info_storage_types($storage);
|
||
|
|
module_invoke($storage_info['module'], 'field_storage_delete', $entity_type, $entity, $fields);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Let other modules act on deleting the entity.
|
||
|
|
module_invoke_all('field_attach_delete', $entity_type, $entity);
|
||
|
|
|
||
|
|
$entity_info = entity_get_info($entity_type);
|
||
|
|
if ($entity_info['field cache']) {
|
||
|
|
cache_clear_all("field:$entity_type:$id", 'cache_field');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Delete field data for a single revision of an existing entity. The
|
||
|
|
* passed entity must have a revision id attribute.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity with fields to save.
|
||
|
|
*/
|
||
|
|
function field_attach_delete_revision($entity_type, $entity) {
|
||
|
|
_field_invoke('delete_revision', $entity_type, $entity);
|
||
|
|
|
||
|
|
list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
|
||
|
|
|
||
|
|
// Collect the storage backends used by the fields in the entities.
|
||
|
|
$storages = array();
|
||
|
|
foreach (field_info_instances($entity_type, $bundle) as $instance) {
|
||
|
|
$field = field_info_field_by_id($instance['field_id']);
|
||
|
|
$field_id = $field['id'];
|
||
|
|
$storages[$field['storage']['type']][$field_id] = $field_id;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Field storage backends delete their data.
|
||
|
|
foreach ($storages as $storage => $fields) {
|
||
|
|
$storage_info = field_info_storage_types($storage);
|
||
|
|
module_invoke($storage_info['module'], 'field_storage_delete_revision', $entity_type, $entity, $fields);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Let other modules act on deleting the revision.
|
||
|
|
module_invoke_all('field_attach_delete_revision', $entity_type, $entity);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prepare field data prior to display.
|
||
|
|
*
|
||
|
|
* This function lets field types and formatters load additional data
|
||
|
|
* needed for display that is not automatically loaded during
|
||
|
|
* field_attach_load(). It accepts an array of entities to allow query
|
||
|
|
* optimisation when displaying lists of entities.
|
||
|
|
*
|
||
|
|
* field_attach_prepare_view() and field_attach_view() are two halves
|
||
|
|
* of the same operation. It is safe to call
|
||
|
|
* field_attach_prepare_view() multiple times on the same entity
|
||
|
|
* before calling field_attach_view() on it, but calling any Field
|
||
|
|
* API operation on an entity between passing that entity to these two
|
||
|
|
* functions may yield incorrect results.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entities; e.g. 'node' or 'user'.
|
||
|
|
* @param $entities
|
||
|
|
* An array of entities, keyed by entity id.
|
||
|
|
* @param $view_mode
|
||
|
|
* View mode, e.g. 'full', 'teaser'...
|
||
|
|
* @param $langcode
|
||
|
|
* (Optional) The language the field values are to be shown in. If no language
|
||
|
|
* is provided the current language is used.
|
||
|
|
* @param array $options
|
||
|
|
* An associative array of additional options. See _field_invoke() for
|
||
|
|
* details.
|
||
|
|
*/
|
||
|
|
function field_attach_prepare_view($entity_type, $entities, $view_mode, $langcode = NULL, $options = array()) {
|
||
|
|
// Validate $options since this is a new parameter added after Drupal 7 was
|
||
|
|
// released.
|
||
|
|
$options = is_array($options) ? $options : array();
|
||
|
|
|
||
|
|
$options['language'] = array();
|
||
|
|
|
||
|
|
// To ensure hooks are only run once per entity, only process items without
|
||
|
|
// the _field_view_prepared flag.
|
||
|
|
// @todo: resolve this more generally for both entity and field level hooks.
|
||
|
|
$prepare = array();
|
||
|
|
foreach ($entities as $id => $entity) {
|
||
|
|
if (empty($entity->_field_view_prepared)) {
|
||
|
|
// Add this entity to the items to be prepared.
|
||
|
|
$prepare[$id] = $entity;
|
||
|
|
|
||
|
|
// Determine the actual language to display for each field, given the
|
||
|
|
// languages available in the field data.
|
||
|
|
$options['language'][$id] = field_language($entity_type, $entity, NULL, $langcode);
|
||
|
|
|
||
|
|
// Mark this item as prepared.
|
||
|
|
$entity->_field_view_prepared = TRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$null = NULL;
|
||
|
|
// First let the field types do their preparation.
|
||
|
|
_field_invoke_multiple('prepare_view', $entity_type, $prepare, $null, $null, $options);
|
||
|
|
// Then let the formatters do their own specific massaging.
|
||
|
|
// field_default_prepare_view() takes care of dispatching to the correct
|
||
|
|
// formatters according to the display settings for the view mode.
|
||
|
|
_field_invoke_multiple_default('prepare_view', $entity_type, $prepare, $view_mode, $null, $options);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a renderable array for the fields on an entity.
|
||
|
|
*
|
||
|
|
* Each field is displayed according to the display options specified in the
|
||
|
|
* $instance definition for the given $view_mode.
|
||
|
|
*
|
||
|
|
* field_attach_prepare_view() and field_attach_view() are two halves
|
||
|
|
* of the same operation. It is safe to call
|
||
|
|
* field_attach_prepare_view() multiple times on the same entity
|
||
|
|
* before calling field_attach_view() on it, but calling any Field
|
||
|
|
* API operation on an entity between passing that entity to these two
|
||
|
|
* functions may yield incorrect results.
|
||
|
|
*
|
||
|
|
* Sample structure:
|
||
|
|
* @code
|
||
|
|
* array(
|
||
|
|
* 'field_foo' => array(
|
||
|
|
* '#theme' => 'field',
|
||
|
|
* '#title' => the label of the field instance,
|
||
|
|
* '#label_display' => the label display mode,
|
||
|
|
* '#object' => the fieldable entity being displayed,
|
||
|
|
* '#entity_type' => the type of the entity being displayed,
|
||
|
|
* '#language' => the language of the field values being displayed,
|
||
|
|
* '#view_mode' => the view mode,
|
||
|
|
* '#field_name' => the name of the field,
|
||
|
|
* '#field_type' => the type of the field,
|
||
|
|
* '#formatter' => the name of the formatter,
|
||
|
|
* '#items' => the field values being displayed,
|
||
|
|
* // The element's children are the formatted values returned by
|
||
|
|
* // hook_field_formatter_view().
|
||
|
|
* ),
|
||
|
|
* );
|
||
|
|
* @endcode
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity with fields to render.
|
||
|
|
* @param $view_mode
|
||
|
|
* View mode, e.g. 'full', 'teaser'...
|
||
|
|
* @param $langcode
|
||
|
|
* The language the field values are to be shown in. If no language is
|
||
|
|
* provided the current language is used.
|
||
|
|
* @param array $options
|
||
|
|
* An associative array of additional options. See _field_invoke() for
|
||
|
|
* details.
|
||
|
|
* @return
|
||
|
|
* A renderable array for the field values.
|
||
|
|
*/
|
||
|
|
function field_attach_view($entity_type, $entity, $view_mode, $langcode = NULL, $options = array()) {
|
||
|
|
// Validate $options since this is a new parameter added after Drupal 7 was
|
||
|
|
// released.
|
||
|
|
$options = is_array($options) ? $options : array();
|
||
|
|
|
||
|
|
// Determine the actual language to display for each field, given the
|
||
|
|
// languages available in the field data.
|
||
|
|
$display_language = field_language($entity_type, $entity, NULL, $langcode);
|
||
|
|
$options['language'] = $display_language;
|
||
|
|
|
||
|
|
// Invoke field_default_view().
|
||
|
|
$null = NULL;
|
||
|
|
$output = _field_invoke_default('view', $entity_type, $entity, $view_mode, $null, $options);
|
||
|
|
|
||
|
|
// Add custom weight handling.
|
||
|
|
list($id, $vid, $bundle) = entity_extract_ids($entity_type, $entity);
|
||
|
|
$output['#pre_render'][] = '_field_extra_fields_pre_render';
|
||
|
|
$output['#entity_type'] = $entity_type;
|
||
|
|
$output['#bundle'] = $bundle;
|
||
|
|
|
||
|
|
// Let other modules alter the renderable array.
|
||
|
|
$context = array(
|
||
|
|
'entity_type' => $entity_type,
|
||
|
|
'entity' => $entity,
|
||
|
|
'view_mode' => $view_mode,
|
||
|
|
'display' => $view_mode,
|
||
|
|
'language' => $langcode,
|
||
|
|
);
|
||
|
|
drupal_alter('field_attach_view', $output, $context);
|
||
|
|
|
||
|
|
// Reset the _field_view_prepared flag set in field_attach_prepare_view(),
|
||
|
|
// in case the same entity is displayed with different settings later in
|
||
|
|
// the request.
|
||
|
|
unset($entity->_field_view_prepared);
|
||
|
|
|
||
|
|
return $output;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Populate the template variables with the field values available for rendering.
|
||
|
|
*
|
||
|
|
* The $variables array will be populated with all the field instance values
|
||
|
|
* associated with the given entity type, keyed by field name; in case of
|
||
|
|
* translatable fields the language currently chosen for display will be
|
||
|
|
* selected.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity with fields to render.
|
||
|
|
* @param $element
|
||
|
|
* The structured array containing the values ready for rendering.
|
||
|
|
* @param $variables
|
||
|
|
* The variables array is passed by reference and will be populated with field
|
||
|
|
* values.
|
||
|
|
*/
|
||
|
|
function field_attach_preprocess($entity_type, $entity, $element, &$variables) {
|
||
|
|
list(, , $bundle) = entity_extract_ids($entity_type, $entity);
|
||
|
|
|
||
|
|
foreach (field_info_instances($entity_type, $bundle) as $instance) {
|
||
|
|
$field_name = $instance['field_name'];
|
||
|
|
if (isset($element[$field_name]['#language'])) {
|
||
|
|
$langcode = $element[$field_name]['#language'];
|
||
|
|
$variables[$field_name] = isset($entity->{$field_name}[$langcode]) ? $entity->{$field_name}[$langcode] : NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Let other modules make changes to the $variables array.
|
||
|
|
$context = array(
|
||
|
|
'entity_type' => $entity_type,
|
||
|
|
'entity' => $entity,
|
||
|
|
'element' => $element,
|
||
|
|
);
|
||
|
|
drupal_alter('field_attach_preprocess', $variables, $context);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prepares an entity for translation.
|
||
|
|
*
|
||
|
|
* This function is used to fill-in the form default values for Field API fields
|
||
|
|
* while performing entity translation. By default it copies all the source
|
||
|
|
* values in the given source language to the new entity and assigns them the
|
||
|
|
* target language.
|
||
|
|
*
|
||
|
|
* This is used as part of the 'per entity' translation pattern, which is
|
||
|
|
* implemented only for nodes by translation.module. Other entity types may be
|
||
|
|
* supported through contributed modules.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The type of $entity; e.g. 'node' or 'user'.
|
||
|
|
* @param $entity
|
||
|
|
* The entity to be prepared for translation.
|
||
|
|
* @param $langcode
|
||
|
|
* The language the entity has to be translated in.
|
||
|
|
* @param $source_entity
|
||
|
|
* The source entity holding the field values to be translated.
|
||
|
|
* @param $source_langcode
|
||
|
|
* The source language from which translate.
|
||
|
|
*/
|
||
|
|
function field_attach_prepare_translation($entity_type, $entity, $langcode, $source_entity, $source_langcode) {
|
||
|
|
$options = array('language' => $langcode);
|
||
|
|
// Copy source field values into the entity to be prepared.
|
||
|
|
_field_invoke_default('prepare_translation', $entity_type, $entity, $source_entity, $source_langcode, $options);
|
||
|
|
// Let field types handle their own advanced translation pattern if needed.
|
||
|
|
_field_invoke('prepare_translation', $entity_type, $entity, $source_entity, $source_langcode, $options);
|
||
|
|
// Let other modules alter the entity translation.
|
||
|
|
$context = array(
|
||
|
|
'entity_type' => $entity_type,
|
||
|
|
'langcode' => $langcode,
|
||
|
|
'source_entity' => $source_entity,
|
||
|
|
'source_langcode' => $source_langcode,
|
||
|
|
);
|
||
|
|
drupal_alter('field_attach_prepare_translation', $entity, $context);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Notify field.module that a new bundle was created.
|
||
|
|
*
|
||
|
|
* The default SQL-based storage doesn't need to do anything about it, but
|
||
|
|
* others might.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The entity type to which the bundle is bound.
|
||
|
|
* @param $bundle
|
||
|
|
* The name of the newly created bundle.
|
||
|
|
*/
|
||
|
|
function field_attach_create_bundle($entity_type, $bundle) {
|
||
|
|
// Clear the cache.
|
||
|
|
field_cache_clear();
|
||
|
|
|
||
|
|
// Let other modules act on creating the bundle.
|
||
|
|
module_invoke_all('field_attach_create_bundle', $entity_type, $bundle);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Notify field.module that a bundle was renamed.
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The entity type to which the bundle is bound.
|
||
|
|
* @param $bundle_old
|
||
|
|
* The previous name of the bundle.
|
||
|
|
* @param $bundle_new
|
||
|
|
* The new name of the bundle.
|
||
|
|
*/
|
||
|
|
function field_attach_rename_bundle($entity_type, $bundle_old, $bundle_new) {
|
||
|
|
db_update('field_config_instance')
|
||
|
|
->fields(array('bundle' => $bundle_new))
|
||
|
|
->condition('entity_type', $entity_type)
|
||
|
|
->condition('bundle', $bundle_old)
|
||
|
|
->execute();
|
||
|
|
|
||
|
|
// Clear the cache.
|
||
|
|
field_cache_clear();
|
||
|
|
|
||
|
|
// Update bundle settings.
|
||
|
|
$settings = variable_get('field_bundle_settings_' . $entity_type . '__' . $bundle_old, array());
|
||
|
|
variable_set('field_bundle_settings_' . $entity_type . '__' . $bundle_new, $settings);
|
||
|
|
variable_del('field_bundle_settings_' . $entity_type . '__' . $bundle_old);
|
||
|
|
|
||
|
|
// Let other modules act on renaming the bundle.
|
||
|
|
module_invoke_all('field_attach_rename_bundle', $entity_type, $bundle_old, $bundle_new);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Notify field.module the a bundle was deleted.
|
||
|
|
*
|
||
|
|
* This deletes the data for the field instances as well as the field instances
|
||
|
|
* themselves. This function actually just marks the data and field instances
|
||
|
|
* and deleted, leaving the garbage collection for a separate process, because
|
||
|
|
* it is not always possible to delete this much data in a single page request
|
||
|
|
* (particularly since for some field types, the deletion is more than just a
|
||
|
|
* simple DELETE query).
|
||
|
|
*
|
||
|
|
* @param $entity_type
|
||
|
|
* The entity type to which the bundle is bound.
|
||
|
|
* @param $bundle
|
||
|
|
* The bundle to delete.
|
||
|
|
*/
|
||
|
|
function field_attach_delete_bundle($entity_type, $bundle) {
|
||
|
|
// First, delete the instances themselves. field_read_instances() must be
|
||
|
|
// used here since field_info_instances() does not return instances for
|
||
|
|
// disabled entity types or bundles.
|
||
|
|
$instances = field_read_instances(array('entity_type' => $entity_type, 'bundle' => $bundle), array('include_inactive' => 1));
|
||
|
|
foreach ($instances as $instance) {
|
||
|
|
field_delete_instance($instance);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Clear the cache.
|
||
|
|
field_cache_clear();
|
||
|
|
|
||
|
|
// Clear bundle display settings.
|
||
|
|
variable_del('field_bundle_settings_' . $entity_type . '__' . $bundle);
|
||
|
|
|
||
|
|
// Let other modules act on deleting the bundle.
|
||
|
|
module_invoke_all('field_attach_delete_bundle', $entity_type, $bundle, $instances);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @} End of "defgroup field_attach".
|
||
|
|
*/
|