Ondelete. How To Check Relations?

Yii 1.1 General Discussion
1

Hello everyone!

I’m deleting a record which has a MANY_MANY relation. I need to check the middle table (tblATotblB). If there are some dependencies i had better call $this->addError();

I was trying to make a validator. But first trouble was the scenario name. When i delete a record - model says scenario is ‘update’… (wtf?)

I have to deny the deletion if there are any relative records and i need to say about them.

There is no relatives - just delete.

What is the best way to solve my problem? Is there native yii way to make it?

2

You should use beforeDelete(). The pattern would normally look something like this:




public function beforeDelete()

{

    if (!parent::beforeDelete())

        return false;


    // Now check your relations. Return true if delete should be allowed and false to abort.

}

If you’ve set your foreign key constraints correctly in the database, you can make sure that the record can’t be deleted if any related records exist.