libraries/Model.php

   1 <?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');\r
   2 /**\r
   3  * CodeIgniter\r
   4  *\r
   5  * An open source application development framework for PHP 4.3.2 or newer\r
   6  *\r
   7  * @package             CodeIgniter\r
   8  * @author              ExpressionEngine Dev Team\r
   9  * @copyright   Copyright (c) 2008, EllisLab, Inc.\r
  10  * @license             http://codeigniter.com/user_guide/license.html\r
  11  * @link                http://codeigniter.com\r
  12  * @since               Version 1.0\r
  13  * @filesource\r
  14  */\r
  15 \r
  16 // ------------------------------------------------------------------------\r
  17 \r
  18 /**\r
  19  * CodeIgniter Model Class\r
  20  *\r
  21  * @package             CodeIgniter\r
  22  * @subpackage  Libraries\r
  23  * @category    Libraries\r
  24  * @author              ExpressionEngine Dev Team\r
  25  * @link                http://codeigniter.com/user_guide/libraries/config.html\r
  26  */\r
  27 class Model {\r
  28 \r
  29         var $_parent_name = '';\r
  30 \r
  31         /**\r
  32          * Constructor\r
  33          *\r
  34          * @access public\r
  35          */\r
  36         function Model()\r
  37         {\r
  38                 // If the magic __get() or __set() methods are used in a Model references can't be used.\r
  39                 $this->_assign_libraries( (method_exists($this, '__get') OR method_exists($this, '__set')) ? FALSE : TRUE );\r
  40                 \r
  41                 // We don't want to assign the model object to itself when using the\r
  42                 // assign_libraries function below so we'll grab the name of the model parent\r
  43                 $this->_parent_name = ucfirst(get_class($this));\r
  44                 \r
  45                 log_message('debug', "Model Class Initialized");\r
  46         }\r
  47 \r
  48         /**\r
  49          * Assign Libraries\r
  50          *\r
  51          * Creates local references to all currently instantiated objects\r
  52          * so that any syntax that can be legally used in a controller\r
  53          * can be used within models.  \r
  54          *\r
  55          * @access private\r
  56          */     \r
  57         function _assign_libraries($use_reference = TRUE)\r
  58         {\r
  59                 $CI =& get_instance();                          \r
  60                 foreach (array_keys(get_object_vars($CI)) as $key)\r
  61                 {\r
  62                         if ( ! isset($this->$key) AND $key != $this->_parent_name)\r
  63                         {                       \r
  64                                 // In some cases using references can cause\r
  65                                 // problems so we'll conditionally use them\r
  66                                 if ($use_reference == TRUE)\r
  67                                 {\r
  68                                         $this->$key = NULL; // Needed to prevent reference errors with some configurations\r
  69                                         $this->$key =& $CI->$key;\r
  70                                 }\r
  71                                 else\r
  72                                 {\r
  73                                         $this->$key = $CI->$key;\r
  74                                 }\r
  75                         }\r
  76                 }               \r
  77         }\r
  78 \r
  79 }\r
  80 // END Model Class\r
  81 \r
  82 /* End of file Model.php */\r
  83 /* Location: ./system/libraries/Model.php */