Module | Sequel::Plugins::AssociationDependencies::ClassMethods |
In: |
lib/sequel/plugins/association_dependencies.rb
|
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. |
Add association dependencies to this model. The hash should have association name symbol keys and dependency action symbol values (e.g. albums: :destroy).
# 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