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 52 52: def add_association_dependencies(hash) 53: hash.each do |association, action| 54: raise(Error, "Nonexistent association: #{association}") unless r = association_reflection(association) 55: raise(Error, "Invalid dependence action type: association: #{association}, dependence action: #{action}") unless DEPENDENCE_ACTIONS.include?(action) 56: raise(Error, "Invalid association type: association: #{association}, type: #{r[:type]}") unless time = ASSOCIATION_MAPPING[r[:type]] 57: association_dependencies["#{time}_#{action}""#{time}_#{action}"] << if action == :nullify 58: raise(Error, "Can't nullify many_to_one associated objects: association: #{association}") if r[:type] == :many_to_one 59: r.remove_all_method 60: else 61: raise(Error, "Can only nullify many_to_many associations: association: #{association}") if r[:type] == :many_to_many 62: r.dataset_method 63: end 64: end 65: end
Copy the current model object‘s association_dependencies into the subclass.
# File lib/sequel/plugins/association_dependencies.rb, line 68 68: def inherited(subclass) 69: super 70: ad = association_dependencies.dup 71: ad.keys.each{|k| ad[k] = ad[k].dup} 72: subclass.instance_variable_set(:@association_dependencies, ad) 73: end