[mintao]

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

[phtamas]

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.

[chikazaki]

 mintao, on 01 May 2011 - 12:48 PM, said:

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

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.

[Clem]

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);
}