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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2008 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
class Item_Model extends ORM_MPTT {
protected $children = 'items';
private $relative_path = null;
private $view_restrictions = null;
var $rules = array(
"name" => "required|length[0,255]",
"title" => "required|length[0,255]",
"description" => "length[0,255]"
);
/**
* Add a set of restrictions to any following queries to restrict access only to items
* viewable by the active user.
* @chainable
*/
public function viewable() {
if (is_null($this->view_restrictions)) {
if (user::active()->admin) {
$this->view_restrictions = array();
} else {
foreach (user::group_ids() as $id) {
$this->view_restrictions["view_$id"] = access::ALLOW;
}
}
}
$this->where($this->view_restrictions);
return $this;
}
/**
* Is this item an album?
* @return true if it's an album
*/
public function is_album() {
return $this->type == 'album';
}
/**
* Is this item a photo?
* @return true if it's a photo
*/
public function is_photo() {
return $this->type == 'photo';
}
public function delete() {
$path = $this->file_path();
parent::delete();
// If there is no name, the path is invalid so don't try to delete
if (!empty($this->name)) {
if ($this->is_album()) {
dir::unlink($path);
} else {
unlink($path);
}
}
}
/**
* Move this item to the specified target.
*
* @chainable
* @param Item_Model $target Target item (must be an album
* @return ORM_MTPP
*/
function move_to($target) {
$original_path = $this->file_path();
$original_resize_path = $this->resize_path();
$original_thumb_path = $this->thumb_path();
parent::move_to($target, true);
rename($original_path, $this->file_path());
if ($this->is_album()) {
rename(dirname($original_resize_path), dirname($this->resize_path()));
rename(dirname($original_thumb_path), dirname($this->thumb_path()));
} else {
rename($original_resize_path, $this->resize_path());
rename($original_thumb_path, $this->thumb_path());
}
return $this;
}
/**
* album: url::site("albums/2")
* photo: url::site("photos/3")
*
* @param string $query the query string (eg "show=3")
*/
public function url($query=array()) {
if ($this->is_album()) {
$url = url::site("albums/$this->id");
} else {
$url = url::site("photos/$this->id");
}
if ($query) {
$url .= "?$query";
}
return $url;
}
/**
* album: /var/albums/album1/album2
* photo: /var/albums/album1/album2/photo.jpg
*/
public function file_path() {
return VARPATH . "albums/" . $this->_relative_path();
}
/**
* album: http://example.com/gallery3/var/resizes/album1/
* photo: http://example.com/gallery3/var/albums/album1/photo.jpg
*/
public function file_url($full_uri=false) {
return $full_uri ?
url::abs_file("var/albums/" . $this->_relative_path()) :
url::file("var/albums/" . $this->_relative_path());
}
/**
* album: /var/resizes/album1/.thumb.jpg
* photo: /var/albums/album1/photo.thumb.jpg
*/
public function thumb_path() {
return VARPATH . "thumbs/" . $this->_relative_path() .
($this->type == "album" ? "/.album.jpg" : "");
}
/**
* album: http://example.com/gallery3/var/resizes/album1/.thumb.jpg
* photo: http://example.com/gallery3/var/albums/album1/photo.thumb.jpg
*/
public function thumb_url($full_uri=true) {
return ($full_uri ?
url::abs_file("var/thumbs/" . $this->_relative_path()) :
url::file("var/thumbs/" . $this->_relative_path())) .
($this->type == "album" ? "/.album.jpg" : "");
}
/**
* album: /var/resizes/album1/.resize.jpg
* photo: /var/albums/album1/photo.resize.jpg
*/
public function resize_path() {
return VARPATH . "resizes/" . $this->_relative_path() .
($this->type == "album" ? "/.album.jpg" : "");
}
/**
* album: http://example.com/gallery3/var/resizes/album1/.resize.jpg
* photo: http://example.com/gallery3/var/albums/album1/photo.resize.jpg
*/
public function resize_url($full_uri=true) {
return ($full_uri ?
url::abs_file("var/resizes/" . $this->_relative_path()) :
url::file("var/resizes/" . $this->_relative_path())) .
($this->type == "album" ? "/.album.jpg" : "");
}
/**
* Return the relative path to this item's file.
* @return string
*/
private function _relative_path() {
if (empty($this->relative_path)) {
foreach ($this->parents() as $parent) {
if ($parent->id > 1) {
$paths[] = $parent->name;
}
}
$paths[] = $this->name;
$this->relative_path = implode($paths, "/");
}
return $this->relative_path;
}
/**
* @see ORM::__get()
*/
public function __get($column) {
if ($column == "owner") {
// This relationship depends on an outside module, which may not be present so handle
// failures gracefully.
try {
return model_cache::get("user", $this->owner_id);
} catch (Exception $e) {
return null;
}
} else {
return parent::__get($column);
}
}
/**
* @see ORM::save()
*/
public function save() {
if (!empty($this->changed) && $this->changed != array("view_count" => "view_count")) {
$this->updated = time();
if (!$this->loaded) {
$this->created = $this->updated;
}
}
return parent::save();
}
/**
* Return the Item_Model representing the cover for this album.
* @return Item_Model or null if there's no cover
*/
public function album_cover() {
if ($this->type != "album") {
return null;
}
if (empty($this->album_cover_item_id)) {
return null;
}
return model_cache::get("item", $this->album_cover_item_id);
}
/**
* Find the position of the given child id in this album. The resulting value is 1-indexed, so
* the first child in the album is at position 1.
*/
public function get_position($child_id) {
// Right now we only sort by id ascending, so bake that assumption in here.
// @todo fix this when we introduce sort orders.
return ORM::factory("item")
->where("parent_id", $this->id)
->where("id <=", $child_id)
->count_all();
}
/**
* Return an <img> tag for the thumbnail.
* @param array $extra_attrs Extra attributes to add to the img tag
* @return string
*/
public function thumb_tag($extra_attrs) {
return html::image(array("src" => $this->thumb_url(),
"alt" => $this->title,
"width" => $this->thumb_width,
"height" => $this->thumb_height),
$extra_attrs);
}
/**
* Return an <img> tag for the thumbnail.
* @param array $extra_attrs Extra attributes to add to the img tag
* @return string
*/
public function resize_tag($extra_attrs) {
return html::image(array("src" => $this->resize_url(),
"alt" => $this->title,
"width" => $this->resize_width,
"height" => $this->resize_height),
$extra_attrs);
}
}
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