Class: HasManyCallbacks::HasManyWithChildCallbacksBuilder

Inherits:
ActiveRecord::Associations::Builder::HasMany
  • Object
show all
Defined in:
lib/has_many_callbacks.rb

Constant Summary collapse

HAS_MANY_CALLBACKS = 
[ :after_create, :after_save, :after_destroy ]

Instance Method Summary collapse

Instance Method Details

#build ⇒ Object 



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# File 'lib/has_many_callbacks.rb', line 11

def build
  association = super

  hook_callback = lambda do |callback_name|
    callback_option = association.options[callback_name]

    if callback_option.is_a?(Symbol)
      callback_code = "target.send(:#{callback_option}, obj)"
    else
      callback_code = "callback_option[target, obj]"
    end

    if association.inverse_of.macro == :has_many
      target_callback_iteration_code = "associated_obj.each { |target| #{callback_code} }"
    else
      target_callback_iteration_code = "target = associated_obj; #{callback_code}"
    end

    code = %{
      #{callback_name} do |obj|
        association = obj.class.reflect_on_association(:#{association.inverse_of.name})
        inverse_association = association.klass.reflect_on_association(:#{association.name})
        callback_option = inverse_association.options[:#{callback_name}]
        associated_obj = obj.send(association.name)

        if associated_obj.present?
          #{target_callback_iteration_code}
        end
      end
    }
    association.klass.instance_eval code
  end

  HAS_MANY_CALLBACKS.each do |callback|
    if options[callback].present?
      hook_callback[callback]
      #puts "#{model.to_s}: hooking #{callback} on #{association.try(:name)}"
    end
  end


  #hook_callback.call(:after_create, after_create_callback) if after_create_callback.present?
  association
end

#valid_options ⇒ Object 



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# File 'lib/has_many_callbacks.rb', line 7

def valid_options
  super + HAS_MANY_CALLBACKS
end