diff options
Diffstat (limited to 'activerecord/lib/active_record/associations')
3 files changed, 27 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations/association_proxy.rb b/activerecord/lib/active_record/associations/association_proxy.rb index 252ff7e7ea..f4eceeed8c 100644 --- a/activerecord/lib/active_record/associations/association_proxy.rb +++ b/activerecord/lib/active_record/associations/association_proxy.rb @@ -130,6 +130,16 @@ module ActiveRecord @loaded = true end + # The target is stale if the target no longer points to the record(s) that the + # relevant foreign_key(s) refers to. If stale, the association accessor method + # on the owner will reload the target. It's up to subclasses to implement this + # method if relevant. + # + # Note that if the target has not been loaded, it is not considered stale. + def stale_target? + false + end + # Returns the target of this proxy, same as +proxy_target+. def target @target diff --git a/activerecord/lib/active_record/associations/belongs_to_association.rb b/activerecord/lib/active_record/associations/belongs_to_association.rb index b438620c8f..c9abfe36e8 100644 --- a/activerecord/lib/active_record/associations/belongs_to_association.rb +++ b/activerecord/lib/active_record/associations/belongs_to_association.rb @@ -42,6 +42,14 @@ module ActiveRecord @updated end + def stale_target? + if @target && @target.persisted? + @target.send(@reflection.association_primary_key).to_i != @owner.send(@reflection.primary_key_name).to_i + else + false + end + end + private def find_target find_method = if @reflection.options[:primary_key] diff --git a/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb b/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb index a0df860623..844ae94c3d 100644 --- a/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb +++ b/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb @@ -23,6 +23,15 @@ module ActiveRecord @updated end + def stale_target? + if @target && @target.persisted? + @target.send(@reflection.association_primary_key).to_i != @owner.send(@reflection.primary_key_name).to_i || + @target.class.base_class.name.to_s != @owner.send(@reflection.options[:foreign_type]).to_s + else + false + end + end + private # NOTE - for now, we're only supporting inverse setting from belongs_to back onto |