Module: Volt::Actions::ClassMethods

Defined in:
lib/volt/controllers/actions.rb

Instance Method Summary collapse

Instance Method Details

#setup_action_helpers_in_class(*groups) ⇒ Object

Takes a list of action groups (as symbols). An action group is typically used for before/after, but can be used anytime you have multiple sets of actions. The method will create an x_action method for each group passed in.



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# File 'lib/volt/controllers/actions.rb', line 21

def setup_action_helpers_in_class(*groups)
  groups.each do |group|
    # Setup a class attribute to track the
    callbacks_var_name = :"#{group}_action_callbacks"
    class_attribute(callbacks_var_name)

    # Create the method on the class
    define_singleton_method(:"#{group}_action") do |*args, &block|
      # Add the block in place of the symbol
      args.unshift(block) if block

      fail 'No callback symbol or block provided' unless args[0]

      callbacks = send(callbacks_var_name)

      unless callbacks
        callbacks = []
        send(:"#{callbacks_var_name}=", callbacks)
      end

      if args.last.is_a?(Hash)
        options = args.pop
      else
        options = nil
      end

      args.each do |callback|
        callbacks << [callback, options]
      end
    end
  end
end