PHP EE_Base_Class::get_first_related示例

 /**
  * Mostly the same as populate_defaults , except takes a model object as input, not an array,
  * and also sets the form's _model_object
  * @param EE_Base_Class $model_obj
  * @return void
  */
 public function populate_model_obj($model_obj)
 {
     $model_obj = $this->_model->ensure_is_obj($model_obj);
     $this->_model_object = $model_obj;
     $defaults = $model_obj->model_field_array();
     foreach ($this->_model->relation_settings() as $relation_name => $relation_obj) {
         $form_inputs = $this->inputs();
         if (isset($form_inputs[$relation_name])) {
             if ($relation_obj instanceof EE_Belongs_To_Relation) {
                 //then we only expect there to be one
                 $related_item = $this->_model_object->get_first_related($relation_name);
                 $defaults[$relation_name] = $related_item->ID();
             } else {
                 $related_items = $this->_model_object->get_many_related($relation_name);
                 $ids = array();
                 foreach ($related_items as $related_item) {
                     $ids[] = $related_item->ID();
                 }
                 $defaults[$relation_name] = $ids;
             }
         }
     }
     $this->populate_defaults($defaults);
 }