diff options
Diffstat (limited to 'activerecord/lib/active_record/associations.rb')
| -rwxr-xr-x | activerecord/lib/active_record/associations.rb | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index ff6775e027..077245559a 100755 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -311,10 +311,12 @@ module ActiveRecord # of this class in lower-case and "_id" suffixed. So a +Person+ class that makes a has_many association will use "person_id" # as the default foreign_key. # * <tt>:dependent</tt> - if set to :destroy (or true) all the associated objects are destroyed - # alongside this object. Also accepts :nullify which will set the associated object's foreign key - # field to NULL. + # alongside this object by calling their destroy method. If set to :delete_all all associated + # objects are deleted *without* calling their destroy method. If set to :nullify all associated + # objects' foreign keys are set to NULL *without* calling their save callbacks. # May not be set if :exclusively_dependent is also set. - # * <tt>:exclusively_dependent</tt> - if set to true all the associated object are deleted in one SQL statement without having their + # * <tt>:exclusively_dependent</tt> - Deprecated; equivalent to :dependent => :delete_all. If set to true all + # the associated object are deleted in one SQL statement without having their # before_destroy callback run. This should only be used on associations that depend solely on this class and don't need to do any # clean-up in before_destroy. The upside is that it's much faster, especially if there's a counter_cache involved. # May not be set if :dependent is also set. @@ -350,24 +352,28 @@ module ActiveRecord require_association_class(association_class_name) raise ArgumentError, ':dependent and :exclusively_dependent are mutually exclusive options. You may specify one or the other.' if options[:dependent] and options[:exclusively_dependent] - + + if options[:exclusively_dependent] + options[:dependent] = :delete_all + #warn "The :exclusively_dependent option is deprecated. Please use :dependent => :delete_all instead.") + end + # See HasManyAssociation#delete_records. Dependent associations # delete children, otherwise foreign key is set to NULL. case options[:dependent] when :destroy, true module_eval "before_destroy '#{association_name}.each { |o| o.destroy }'" + when :delete_all + module_eval "before_destroy { |record| #{association_class_name}.delete_all(%(#{association_class_primary_key_name} = \#{record.quoted_id})) }" when :nullify module_eval "before_destroy { |record| #{association_class_name}.update_all(%(#{association_class_primary_key_name} = NULL), %(#{association_class_primary_key_name} = \#{record.quoted_id})) }" when nil, false # pass else - raise ArgumentError, 'The :dependent option expects either true, :destroy or :nullify' - end - - if options[:exclusively_dependent] - module_eval "before_destroy { |record| #{association_class_name}.delete_all(%(#{association_class_primary_key_name} = \#{record.quoted_id})) }" + raise ArgumentError, 'The :dependent option expects either true, :destroy, :delete_all, or :nullify' end + add_multiple_associated_save_callbacks(association_name) add_association_callbacks(association_name, options) |