Module: Mobility::Backend::ActiveModel::Dirty::ClassMethods

Defined in:
lib/mobility/backend/active_model/dirty.rb

Overview

Adds hook after Setup#setup_model to add dirty-tracking methods for translated attributes onto model class.

Instance Method Summary collapse

Instance Method Details

#setup_model(model_class, attributes, **options) ⇒ Object

Call setup block on a class with attributes and options.

Parameters:

  • model_class —

    Class to be setup-ed

  • attributes (Array<String>)
  • options (Hash)
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# File 'lib/mobility/backend/active_model/dirty.rb', line 46

def setup_model(model_class, attributes, **options)
  super
  model_class.class_eval do
    %w[changed? change was will_change! previously_changed? previous_change].each do |suffix|
      attributes.each do |attribute|
        class_eval <<-EOM, __FILE__, __LINE__ + 1
          def #{attribute}_#{suffix}
            attribute_#{suffix}("#{attribute}_#\{Mobility.locale\}")
          end
        EOM
      end
    end
  end

  restore_methods = Module.new do
    attributes.each do |attribute|
      locale_accessor = "#{attribute}_#{Mobility.locale}"
      define_method "restore_#{attribute}!" do
        if attribute_changed?(locale_accessor)
          __send__("#{attribute}=", changed_attributes[locale_accessor])
        end
      end
    end

    define_method :restore_attribute! do |attr|
      if attributes.include?(attr.to_s)
        send("restore_#{attr}!")
      else
        super(attr)
      end
    end
    private :restore_attribute!
  end
  model_class.include restore_methods
end