CODEWITHSUNDEEP
phpsymfony
Kamil P
Kamil P

Reputation: 784

Symfony - form event - get new and old data

I have a Post entity and PostType.

Post entity have field $requireModeration it means someone must check this post and approve it before it can be published.

When I'm editing post I want to compare old post value and new post value. And if value is changed I also want to change requireModeration flag to true.

Can I do it through form events?
Something like this:

public function postSubmit(FormEvent $event)
{
    $newPost = $event->getData();
    $newContent = $post->getContent(); // return new contant of post
    $oldPost = ... // here I want to get old post
    $oldContent = $oldPost->getContent();

    if($newContent != $oldContent) {
        // ...
    }
}

But unfortunately I can get only new, just sent data through FormEvent object.

Upvotes: 2

Views: 5256

Answers (2)

Milan Vidovic
Milan Vidovic

Reputation: 69

public function postSubmit(FormEvent $event)
{
    $newPost = $event->getData();
    $newContent = $newPost->getContent();
    $uow = $this->em->getUnitOfWork();
    $oldPost = $uow->getOriginalEntityData($post);
    $oldContent = $OriginalEntityData["content"];

    if($newContent != $oldContent) {
        // ...
    }
}

Upvotes: 3

Andrii Mishchenko
Andrii Mishchenko

Reputation: 2694

You should use Doctrine's lifecycle events and UnitOfWork for this instead of Form events (I assume that you use Doctrine at your project).

Add preUpdate listener to your Post entity and do something like:

$uow = $em->getUnitOfWork();
$changeset = $uow->getEntityChangeSet($entity);

In $changeset variable you will have fields list that was changed in the $entity during current request with their old and new values.

Upvotes: 3

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