method

define_attribute_methods

v7.1.3.2 - Show latest stable - 0 notes - Class: ActiveModel::AttributeMethods::ClassMethods

define_attribute_methods(*attr_names) public

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

Show source

# File activemodel/lib/active_model/attribute_methods.rb, line 285
      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

define_attribute_methods

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