Question

I am making a custom ActiveForm method, but it requires the model to have a certain custom validator attached the the attribute that is being passed through (otherwise who knows what will happen!?)

My question is simply… is there a way to run this check in the code that is reliable?

I don’t want to add the validator at runtime. That would create confusion and possibly let someone use this type of field where it ought not be used.

So I want to say something like:

if( model NOT HAVE validationMethod ON property)
  throw Exception;

Answer 1

I’m also not sure why you want to do this, but in addition to viewing the rules array you can do:

$model->getValidators($attribute)

to check which validators are active for a particular attribute (or all attributes, if the arg is null. (I’m assuming $attribute = property in your example.)

This will return all the validator objects that are active for the current scenario and you can check if a predefined or custom class exists. It also gets you a bit more info than just the rules array (i.e., the properties of the validator class).