Method: ActiveRecord::AttributeMethods::ClassMethods#attribute_method_suffix

Defined in:
lib/active_record/attribute_methods.rb

#attribute_method_suffix(*suffixes) ⇒ Object

Declares 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



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# File 'lib/active_record/attribute_methods.rb', line 46

def attribute_method_suffix(*suffixes)
  attribute_method_suffixes.concat suffixes
  rebuild_attribute_method_regexp
end