From 2935d07569337aeaa06d03a56180d235a7fbbebf Mon Sep 17 00:00:00 2001 From: Ryuta Kamizono Date: Thu, 29 Mar 2018 06:52:04 +0900 Subject: Chaining named scope is no longer leaking to class level querying methods Active Record uses `scoping` to delegate to named scopes from relations for propagating the chaining source scope. It was needed to restore the source scope in named scopes, but it was caused undesired behavior that pollute all class level querying methods. Example: ```ruby class Topic < ActiveRecord::Base scope :toplevel, -> { where(parent_id: nil) } scope :children, -> { where.not(parent_id: nil) } scope :has_children, -> { where(id: Topic.children.select(:parent_id)) } end # Works as expected. Topic.toplevel.where(id: Topic.children.select(:parent_id)) # Doesn't work due to leaking `toplevel` to `Topic.children`. Topic.toplevel.has_children ``` Since #29301, the receiver in named scopes has changed from the model class to the chaining source scope, so the polluting class level querying methods is no longer required for that purpose. Fixes #14003. --- activerecord/lib/active_record/relation/spawn_methods.rb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'activerecord/lib/active_record/relation') diff --git a/activerecord/lib/active_record/relation/spawn_methods.rb b/activerecord/lib/active_record/relation/spawn_methods.rb index 7874c4c35a..d758e289ca 100644 --- a/activerecord/lib/active_record/relation/spawn_methods.rb +++ b/activerecord/lib/active_record/relation/spawn_methods.rb @@ -8,7 +8,7 @@ module ActiveRecord module SpawnMethods # This is overridden by Associations::CollectionProxy def spawn #:nodoc: - @delegate_to_klass ? klass.all : clone + @delegate_to_klass && klass.current_scope ? klass.all : clone end # Merges in the conditions from other, if other is an ActiveRecord::Relation. -- cgit v1.2.3