Class: ActiveRecord::Base

Inherits:
Object show all
Defined in:
lib/background_lite/rails_ext/activerecord/base.rb

Instance Method Summary collapse

Instance Method Details

#cleanup_for_background ⇒ Object

Override this method to strip your object from data that doesn’t have to be transmitted to the background process. Note that you don’t need to clear the association cache, as this is already done for you in clone_for_background.



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# File 'lib/background_lite/rails_ext/activerecord/base.rb', line 7

def cleanup_for_background
end

#clone_for_background ⇒ Object

Prepares the object to be transmitted to the background. This method dups the object and strips some instance variables, most notably the association cache, in order to prevent all associations to be transmitted with the object in full length.

To clean up data specific to your class, use cleanup_for_background.



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# File 'lib/background_lite/rails_ext/activerecord/base.rb', line 16

def clone_for_background
  dup.tap do |x|
    x.cleanup_for_background
    x.send(:instance_variable_set, "@new_record", new_record?)
    x.send(:instance_variable_set, "@changed_attributes", instance_variable_get("@changed_attributes"))
    x.id = self.id
    
    # taken from ActiveRecord::AttributeMethods::ATTRIBUTE_TYPES_CACHED_BY_DEFAULT
    type_to_preserve = [DateTime, Time, Date]
    attr_cache = x.instance_variable_get(:@attributes_cache)
    attr_cache.each do |key, value|
      attr_cache[key] = nil unless type_to_preserve.include?(attr_cache[key].class)
    end
    x.instance_variable_set(:@errors, nil)
    x.clear_association_cache
  end
end