Symfony2 + Doctrine2：是否可以与实体设置器中的验证注释进行交互？

Question

I have an Entity which i have decorated using validation annotations like this:

use Symfony\Component\Validator\Constraints as Assert;

class Entity
{
    /**
     * @Assert\MaxLength(100)
     */
    protected $property;
    ...
}

Within the setter for $property i want to know if validation was successful of the annotation when a form is submitted. If validation is successful (or not) i will perform other operations in PHP that is not available via the annotations.

Is this possible? ie:

...
function setProperty($value)
{
    if(annotation_validation_passed_when_form_submitted)
    {
        $value = do_something($value);
    }
    $this->property = $value;
}
...

Answer 1

You can add an EventListener to your FormBuilder to listen for the FormEvents::BIND event. You can either do this in its own class or just in the form builder itself. I'll show an example of the latter because it's faster.

$builder->addEventListener(FormEvents::BIND, function($event) {
        $data = $event->getData();

        $comment = $data->getComment();
        $comment = $comment . $comment;
        $data->setComment($comment);
});

Of course replace the logic with your own.