Method: ActiveModel::AttributeMethods::ClassMethods#attribute_method_affix

Defined in:
lib/active_model/attribute_methods.rb

#attribute_method_affix(*affixes) ⇒ Object

Declares a method available for all attributes with the given prefix and suffix. Uses method_missing and respond_to? to rewrite the method.

#{prefix}#{attr}#{suffix}(*args, &block)

to

#{prefix}attribute#{suffix}(#{attr}, *args, &block)

An #{prefix}attribute#{suffix} instance method must exist and accept at least the attr argument.

For example:

class Person

  include ActiveModel::AttributeMethods
  attr_accessor :name
  attribute_method_affix :prefix => 'reset_', :suffix => '_to_default!'
  define_attribute_methods [:name]

  private

  def reset_attribute_to_default!(attr)
    ...
  end
end

person = Person.new
person.name                         # => 'Gem'
person.reset_name_to_default!
person.name                         # => 'Gemma'



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# File 'lib/active_model/attribute_methods.rb', line 218

def attribute_method_affix(*affixes)
  self.attribute_method_matchers += affixes.map { |affix| AttributeMethodMatcher.new :prefix => affix[:prefix], :suffix => affix[:suffix] }
  undefine_attribute_methods
end