Type:
Module
Active Model Validation Callbacks
Provides an interface for any class to have before_validation
and after_validation callbacks.
First, include ActiveModel::Validations::Callbacks from the class you are creating:
1 2 3 4 5 6 | class MyModel include ActiveModel::Validations::Callbacks before_validation :do_stuff_before_validation after_validation :do_stuff_after_validationend |
Like other before_* callbacks if
before_validation returns false then
valid? will not be called.