raw sketch of ratings category

rating.php

@@ -0,0 +1,65 @@
+<?php
+/**
+ * COPS (Calibre OPDS PHP Server) class file
+ *
+ * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author     Michael Pfitzner
+ */
+
+require_once('base.php');
+
+class Rating extends Base {
+    const ALL_RATING_ID = "cops:rating";
+
+    const AUTHOR_COLUMNS = "ratings.id as id, ratings.rating as rating, count(*) as count";
+    const SQL_ALL_RATINGS ="select {0} from ratings, books_ratings_link where books_ratings_link.rating = ratings.id group by ratings.id order by ratings.rating";
+    public $id;
+    public $name;
+    public $sort;
+
+    public function __construct($pid, $pname) {
+        $this->id = $pid;
+        $this->name = $pname;
+    }
+
+    public function getUri () {
+        return "?page=".parent::PAGE_RATING_DETAIL."&id=$this->id";
+    }
+
+    public function getEntryId () {
+        return self::ALL_RATING_ID.":".$this->id;
+    }
+
+    public static function getCount() {
+        $nAuthors = parent::getDb ()->query('select count(*) from ratings')->fetchColumn();
+        $entry = new Entry (localize("rating.title"), self::ALL_RATING_ID,
+            str_format (localize("ratings", $nAuthors), $nAuthors), "text",
+            array ( new LinkNavigation ("?page=".parent::PAGE_ALL_RATINGS)));
+        return $entry;
+    }
+
+    public static function getAllRatings() {
+        return self::getEntryArray (self::SQL_ALL_RATINGS, array ());
+    }
+
+    public static function getEntryArray ($query, $params) {
+        list ($totalNumber, $result) = parent::executeQuery ($query, self::AUTHOR_COLUMNS, "", $params, -1);
+        $entryArray = array();
+        while ($post = $result->fetchObject ())
+        {
+            $rating = new Rating ($post->id, $post->rating);
+            $bewertung=$post->rating/2;
+            $bewertung.=" Sterne";
+            array_push ($entryArray, new Entry ($bewertung, $rating->getEntryId (),
+                str_format (localize("bookword", $post->count), $post->count), "text",
+                array ( new LinkNavigation ($rating->getUri ()))));
+        }
+        return $entryArray;
+    }
+
+    public static function getRatingById ($ratingId) {
+        $result = parent::getDb ()->prepare('select rating from ratings where id = ?');
+        $result->execute (array ($ratingId));
+        return new Author ($ratingId, $result->fetchColumn ());
+    }
+}