Module: Rubydora::Callbacks::ExtendableClassMethods

Defined in:
lib/rubydora/callbacks.rb

Overview

hooks support

Instance Method Summary collapse

Instance Method Details

#hooks ⇒ Object

creates the @hooks container (“hooks” are blocks or procs). returns an array



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# File 'lib/rubydora/callbacks.rb', line 16

def hooks
  @hooks ||= {}
end

#register_callback(*attrs) ⇒ Object

register callback procs

Parameters:

  • hook (Array<Symbol>) —

    name



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# File 'lib/rubydora/callbacks.rb', line 22

def register_callback(*attrs)
  attrs.each do |method_name|
    next if methods.include? method_name.to_s
    instance_eval "
      def #{method_name}(&blk)
        self.hooks[:#{method_name}] ||= []
        self.hooks[:#{method_name}] << blk
      end

      def clear_#{method_name}_blocks!
        self.hooks[:#{method_name}] = []
      end
    "

    class_eval "
      def call_#{method_name}
        self.class.hooks[:#{method_name}] ||= []
        self.class.hooks[:#{method_name}].each do |h|
          instance_eval &h
        end
      end

    "
  end
end