Module: Sequel::Plugins::AssociationDependencies::ClassMethods

Attributes

association_dependencies [R] A hash specifying the association dependencies for each model. The keys are symbols indicating the type of action and when it should be executed (e.g. :before_delete). Values are an array of method symbols. For before_nullify, the symbols are remove_all_association methods. For other types, the symbols are association_dataset methods, on which delete or destroy is called.

Public Instance methods

add_association_dependencies(hash)

Add association dependencies to this model. The hash should have association name symbol keys and dependency action symbol values (e.g. albums: :destroy).

[Source]

    # File lib/sequel/plugins/association_dependencies.rb, line 54
54:         def add_association_dependencies(hash)
55:           hash.each do |association, action|
56:             raise(Error, "Nonexistent association: #{association}") unless r = association_reflection(association)
57:             type = r[:type]
58:             raise(Error, "Invalid dependence action type: association: #{association}, dependence action: #{action}") unless DEPENDENCE_ACTIONS.include?(action)
59:             raise(Error, "Invalid association type: association: #{association}, type: #{type}") unless time = ASSOCIATION_MAPPING[type]
60:             association_dependencies["#{time}_#{action}""#{time}_#{action}"] << if action == :nullify
61:               case type
62:               when :one_to_many , :many_to_many
63:                 proc{public_send(r[:remove_all_method])}
64:               when :one_to_one
65:                 proc{public_send(r[:setter_method], nil)}
66:               else
67:                 raise(Error, "Can't nullify many_to_one associated objects: association: #{association}")
68:               end
69:             else
70:               raise(Error, "Can only nullify many_to_many associations: association: #{association}") if type == :many_to_many
71:               r[:dataset_method]
72:             end
73:           end
74:         end

freeze()

Freeze association dependencies when freezing model class.

[Source]

    # File lib/sequel/plugins/association_dependencies.rb, line 77
77:         def freeze
78:           @association_dependencies.freeze.each_value(&:freeze)
79: 
80:           super
81:         end