Module: TimestampAPI::ModelRelations::ClassMethods

Defined in:
lib/timestamp_api/model_relations.rb

Instance Method Summary collapse

Instance Method Details

#belongs_to(association_name) ⇒ Object 



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# File 'lib/timestamp_api/model_relations.rb', line 23

def belongs_to(association_name)
  # Add this association to the list of associations for this class
  self.class_variable_set(:@@belongs_to, self.class_variable_get(:@@belongs_to) + [association_name])
  # Define a memoizing getter for this association
  define_method(association_name) do
    return instance_variable_get(:"@#{association_name}") unless instance_variable_get(:"@#{association_name}").nil?
    unknown_association_error = UnknownAssociation.new(self, association_name)
    associationship_id = instance_variable_get(:"@_#{association_name}_id")
    association_class  = ModelRegistry.registry[association_name.to_s] || raise(unknown_association_error)
    instance_variable_set(:"@#{association_name}", association_class.find(associationship_id))
  end
end