142 lines
4.5 KiB
PHP
142 lines
4.5 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2011 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class Tag_Model_Core extends ORM {
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protected $has_and_belongs_to_many = array("items");
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public function __construct($id=null) {
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parent::__construct($id);
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if (!$this->loaded()) {
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// Set reasonable defaults
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$this->count = 0;
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}
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}
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/**
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* Return all viewable items associated with this tag.
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* @param integer $limit number of rows to limit result to
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* @param integer $offset offset in result to start returning rows from
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* @param string $type the type of item (album, photo)
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* @return ORM_Iterator
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*/
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public function items($limit=null, $offset=null, $type=null) {
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$model = ORM::factory("item")
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->viewable()
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->join("items_tags", "items.id", "items_tags.item_id")
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->where("items_tags.tag_id", "=", $this->id);
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if ($type) {
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$model->where("items.type", "=", $type);
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}
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return $model->find_all($limit, $offset);
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}
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/**
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* Return the count of all viewable items associated with this tag.
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* @param string $type the type of item (album, photo)
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* @return integer
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*/
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public function items_count($type=null) {
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$model = ORM::factory("item")
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->viewable()
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->join("items_tags", "items.id", "items_tags.item_id")
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->where("items_tags.tag_id", "=", $this->id);
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if ($type) {
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$model->where("items.type", "=", $type);
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}
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return $model->count_all();
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}
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/**
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* Overload ORM::save() to trigger an item_related_update event for all items that are related
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* to this tag.
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*/
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public function save() {
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$related_item_ids = array();
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foreach (db::build()
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->select("item_id")
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->from("items_tags")
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->where("tag_id", "=", $this->id)
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->execute() as $row) {
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$related_item_ids[$row->item_id] = 1;
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}
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if (isset($this->object_relations["items"])) {
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$added = array_diff($this->changed_relations["items"], $this->object_relations["items"]);
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$removed = array_diff($this->object_relations["items"], $this->changed_relations["items"]);
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if (isset($this->changed_relations["items"])) {
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$changed = array_merge($added, $removed);
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}
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$this->count = count($this->object_relations["items"]) + count($added) - count($removed);
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}
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$result = parent::save();
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if (!empty($changed)) {
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foreach (ORM::factory("item")->where("id", "IN", $changed)->find_all() as $item) {
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module::event("item_related_update", $item);
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}
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}
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return $result;
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}
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/**
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* Overload ORM::delete() to trigger an item_related_update event for all items that are
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* related to this tag, and delete all items_tags relationships.
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*/
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public function delete($ignored_id=null) {
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$related_item_ids = array();
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foreach (db::build()
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->select("item_id")
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->from("items_tags")
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->where("tag_id", "=", $this->id)
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->execute() as $row) {
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$related_item_ids[$row->item_id] = 1;
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}
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db::build()->delete("items_tags")->where("tag_id", "=", $this->id)->execute();
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$result = parent::delete();
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if ($related_item_ids) {
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foreach (ORM::factory("item")
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->where("id", "IN", array_keys($related_item_ids))
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->find_all() as $item) {
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module::event("item_related_update", $item);
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}
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}
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return $result;
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}
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/**
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* Return the server-relative url to this item, eg:
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* /gallery3/index.php/tags/35
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*
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* @param string $query the query string (eg "page=3")
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*/
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public function url($query=null) {
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$url = url::site("/tag_albums/tag/{$this->id}/" . urlencode($this->name));
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if ($query) {
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$url .= "?$query";
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}
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return $url;
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}
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}
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