Module: Dagnabit::Activation

Defined in:
lib/dagnabit/activation.rb

Overview

Class methods for mixing in (“activating”) dag functionality.

Instance Method Summary collapse

Instance Method Details

Marks an ActiveRecord model as a link model.

Supported options

:ancestor_id_column

Name of the column in the link tables that will hold the ID of the ancestor object. Defaults to ancestor_id.

:descendant_id_column

Name of the column in the link tables that will hold the ID of the descendant object. Defaults to descendant_id.

:transitive_closure_table_name

Name of the table that will hold the tuples comprising the transitive closure of the dag. Defaults to the edge model’s table name affixed by “_transitive_closure_tuples”.

:transitive_closure_class_name

Name of the generated class that will represent tuples in the transitive closure tuple table. This class is created inside the link model class. Defaults to TransitiveClosureLink.



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# File 'lib/dagnabit/activation.rb', line 26

def acts_as_dag_link(options = {})
  extend Dagnabit::Link::Configuration
  configure_acts_as_dag_link(options)

  extend Dagnabit::Link::TransitiveClosureLinkModel
  generate_transitive_closure_link_model(options)

  extend Dagnabit::Link::ClassMethods
  extend Dagnabit::Link::Associations
  extend Dagnabit::Link::NamedScopes
  extend Dagnabit::Link::Validations
  include Dagnabit::Link::CyclePrevention
  include Dagnabit::Link::TransitiveClosureRecalculation
end

#acts_as_dag_node_linked_by(link_class_name) ⇒ Object

Adds convenience methods to dag nodes.

Strictly speaking, it’s not necessary to call this method inside classes you want to act as nodes. acts_as_dag_node_linked_by merely provides convenience methods for finding and traversing links from/to this node.

The link_class_name parameter determines the the link model to be used for nodes of this type.



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# File 'lib/dagnabit/activation.rb', line 51

def acts_as_dag_node_linked_by(link_class_name)
  extend Dagnabit::Node::Configuration
  configure_acts_as_dag_node(link_class_name)

  extend Dagnabit::Node::ClassMethods
  extend Dagnabit::Node::Associations
  include Dagnabit::Node::Neighbors
end