public function getFormValidationRules($formName, $prefix = '')
 {
     $projectClassName = Config::get('bindings.models.project');
     $rules = array_merge($projectClassName::getRules(), Image::getRules());
     if ($formName == 'update') {
         $rules['file'] = $this->makeOptional($rules['file']);
     }
     return $rules;
 }