instance method `define_attribute_methods`

Ruby on Rails 7.2.3

Since v3.0.20

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

define_attribute_methods(*attr_names)

Declares the attributes that should be prefixed and suffixed by ActiveModel::AttributeMethods.

To use, pass attribute names (as strings or symbols). Be sure to declare define_attribute_methods after you define any prefix, suffix, or affix methods, or they will not hook in.

class Person
  include ActiveModel::AttributeMethods

  attr_accessor :name, :age, :address
  attribute_method_prefix 'clear_'

  # Call to define_attribute_methods must appear after the
  # attribute_method_prefix, attribute_method_suffix or
  # attribute_method_affix declarations.
  define_attribute_methods :name, :age, :address

  private
    def clear_attribute(attr)
      send("#{attr}=", nil)
    end
end

Parameters

attr_names rest

Source

# File activemodel/lib/active_model/attribute_methods.rb, line 272
      def define_attribute_methods(*attr_names)
        ActiveSupport::CodeGenerator.batch(generated_attribute_methods, __FILE__, __LINE__) do |owner|
          attr_names.flatten.each do |attr_name|
            define_attribute_method(attr_name, _owner: owner)
            aliases_by_attribute_name[attr_name.to_s].each do |aliased_name|
              generate_alias_attribute_methods owner, aliased_name, attr_name
            end
          end
        end
      end

Defined in activemodel/lib/active_model/attribute_methods.rb line 272 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveModel::AttributeMethods::ClassMethods

Signature

Parameters