instance method `define_callbacks`

Ruby on Rails 2.2.3

Since v2.2.3

Available in: v2.2.3 v2.3.18 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

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define_callbacks(*callbacks)

No documentation comment.

Parameters

callbacks rest

Source

# File activesupport/lib/active_support/callbacks.rb, line 210
      def define_callbacks(*callbacks)
        callbacks.each do |callback|
          class_eval <<-"end_eval"
            def self.#{callback}(*methods, &block)
              callbacks = CallbackChain.build(:#{callback}, *methods, &block)
              (@#{callback}_callbacks ||= CallbackChain.new).concat callbacks
            end

            def self.#{callback}_callback_chain
              @#{callback}_callbacks ||= CallbackChain.new

              if superclass.respond_to?(:#{callback}_callback_chain)
                CallbackChain.new(superclass.#{callback}_callback_chain + @#{callback}_callbacks)
              else
                @#{callback}_callbacks
              end
            end
          end_eval
        end
      end

Defined in activesupport/lib/active_support/callbacks.rb line 210 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveSupport::Callbacks::ClassMethods

Signature

Parameters