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-rw-r--r--activerecord/lib/active_record/associations/builder/belongs_to.rb24
1 files changed, 15 insertions, 9 deletions
diff --git a/activerecord/lib/active_record/associations/builder/belongs_to.rb b/activerecord/lib/active_record/associations/builder/belongs_to.rb
index 97eb007f62..f02d146e89 100644
--- a/activerecord/lib/active_record/associations/builder/belongs_to.rb
+++ b/activerecord/lib/active_record/associations/builder/belongs_to.rb
@@ -1,4 +1,4 @@
-module ActiveRecord::Associations::Builder
+module ActiveRecord::Associations::Builder # :nodoc:
class BelongsTo < SingularAssociation #:nodoc:
def self.macro
:belongs_to
@@ -33,16 +33,24 @@ module ActiveRecord::Associations::Builder
if (@_after_create_counter_called ||= false)
@_after_create_counter_called = false
- elsif attribute_changed?(foreign_key) && !new_record? && reflection.constructable?
- model = reflection.klass
+ elsif attribute_changed?(foreign_key) && !new_record?
+ if reflection.polymorphic?
+ model = attribute(reflection.foreign_type).try(:constantize)
+ model_was = attribute_was(reflection.foreign_type).try(:constantize)
+ else
+ model = reflection.klass
+ model_was = reflection.klass
+ end
+
foreign_key_was = attribute_was foreign_key
foreign_key = attribute foreign_key
if foreign_key && model.respond_to?(:increment_counter)
model.increment_counter(cache_column, foreign_key)
end
- if foreign_key_was && model.respond_to?(:decrement_counter)
- model.decrement_counter(cache_column, foreign_key_was)
+
+ if foreign_key_was && model_was.respond_to?(:decrement_counter)
+ model_was.decrement_counter(cache_column, foreign_key_was)
end
end
end
@@ -98,8 +106,7 @@ module ActiveRecord::Associations::Builder
touch = reflection.options[:touch]
callback = lambda { |record|
- touch_method = touching_delayed_records? ? :touch : :touch_later
- BelongsTo.touch_record(record, foreign_key, n, touch, touch_method)
+ BelongsTo.touch_record(record, foreign_key, n, touch, belongs_to_touch_method)
}
model.after_save callback, if: :changed?
@@ -108,8 +115,7 @@ module ActiveRecord::Associations::Builder
end
def self.add_destroy_callbacks(model, reflection)
- name = reflection.name
- model.after_destroy lambda { |o| o.association(name).handle_dependency }
+ model.after_destroy lambda { |o| o.association(reflection.name).handle_dependency }
end
def self.define_validations(model, reflection)