| Module | ActiveRecord::AttributeMethods::ClassMethods |
| In: |
lib/active_record/attribute_methods.rb
|
Declare and check for suffixed attribute methods.
Declare a method available for all attributes with the given suffix. Uses method_missing and respond_to? to rewrite the method
#{attr}#{suffix}(*args, &block)
to
attribute#{suffix}(#{attr}, *args, &block)
An attribute#{suffix} instance method must exist and accept at least the attr argument.
For example:
class Person < ActiveRecord::Base
attribute_method_suffix '_changed?'
private
def attribute_changed?(attr)
...
end
end
person = Person.find(1)
person.name_changed? # => false
person.name = 'Hubert'
person.name_changed? # => true