<?php 
				 //Modelo
    class mantenedor_staff_categories_model extends CI_Model
    {
        function __construct()
        {
            parent::__construct();
        }
		
		protected function _get_pk($table)
		{
			$primary_name="";
			if($table!="")
			{
				$CI =& get_instance();
				$field_data = $CI->db->field_data($table);
				foreach ($field_data as $key => $value) 
				{
					if($value->primary_key)
					{
						$primary_name = $value->name;
					}
				}
			}
			return $primary_name;
		}
	}