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   1  <?php
   2  
   3  /*
   4   * This class corresponds to the album_permissions table which maps a user_id
   5   * to a ablum_id + access_level + writable flag.  If the user is not an admin,
   6   * access to any photo must involve a join with this table to make sure the
   7   * user has access to an album that the photo is in.
   8   *
   9   * This file is part of Zoph.
  10   *
  11   * Zoph is free software; you can redistribute it and/or modify
  12   * it under the terms of the GNU General Public License as published by
  13   * the Free Software Foundation; either version 2 of the License, or
  14   * (at your option) any later version.
  15   * 
  16   * Zoph is distributed in the hope that it will be useful,
  17   * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19   * GNU General Public License for more details.
  20   * You should have received a copy of the GNU General Public License
  21   * along with Zoph; if not, write to the Free Software
  22   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  23   */
  24  
  25  class album_permissions extends zoph_table {
  26  
  27      function album_permissions($uid = -1, $aid = -1) {
  28          parent::zoph_table("album_permissions", array("user_id", "album_id"), array(""));
  29          $this->set("user_id", $uid);
  30          $this->set("album_id", $aid);
  31      }
  32  
  33      function insert() {
  34          // check if this entry already exists
  35          if ($this->lookup()) {
  36              return;
  37          }
  38  
  39          // insert records for ancestor albums if they don't exist
  40          $album = new album($this->get("album_id"));
  41          $album->lookup();
  42  
  43          if ($album->get("parent_album_id") > 0) {
  44              $ap = new album_permissions(
  45                  $this->get("user_id"), $album->get("parent_album_id"));
  46  
  47              $ap->set("access_level", $this->get("access_level"));
  48              $ap->set("watermark_level", $this->get("watermark_level"));
  49              $ap->set("writable", $this->get("writable"));
  50  
  51              $ap->insert();
  52          }
  53  
  54          parent::insert(1);
  55      }
  56  
  57      function delete() {
  58  
  59          // delete records for descendant albums if they exist
  60          $album = new album($this->get("album_id"));
  61          $album->lookup();
  62  
  63          $children = $album->get_children();
  64          foreach ($children as $child) {
  65              $ap = new album_permissions(
  66                  $this->get("user_id"), $child->get("album_id"));
  67  
  68              if ($ap->lookup()) {
  69                  $ap->delete();
  70              }
  71          }
  72  
  73          parent::delete();
  74      }
  75  
  76  }
  77  
  78  ?>