CActiveRecordBehavior should add dynamically rules

Yii 1.1 General Discussion
1

is it somehow possible to add additional rules to a model via behavior?

if my behavior is added to a model, I’ve to ensure a certain value format (a date in my case).

Thanks for your help

2

Behaviors can’t add rules to models directly (AFAIK), but you can implement beforeValidate() or afterValidate() method in your behavior, and use addError() if an attribute is invalid.

3

try this

in your model (or base model)




public function rules()

{

    	$rules = array( /* your rules */ );


    	//add all rules from attached behaviors

        $behaviors = $this->behaviors();

        foreach($behaviors as $key=>$behavior)

        {

            if( method_exists($this->{$key},'rules') )

                $rules += $this->{$key}->rules();

        }

        return $rules;

}

and if you have extned models then




	public function rules()

	{

		return array_merge(parent::rules(),array(

			/* your rules for this extended model */

		));

	}

(caution) Properties should not be conflicted.

4

You can process like that:

In your Behavior overwrite the attach method:




/**

* Attach the behavior to the model.

* @param model $owner 

*/

public function attach($owner) {

	parent::attach($owner);

		

        $owner = $this->getOwner();


        $validators = $owner->getValidatorList();

        $params = array('types' => 'jpg, jpeg, gif, png'); // etc

        $validator = CValidator::createValidator('file', $owner, 'MyModel[attribute]',$params );

        $validators->add($validator);

}