CollectionProxy should be default scoped

Fixes #8795

2 files changed, 6 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/associations/collection_proxy.rb b/activerecord/lib/active_record/associations/collection_proxy.rb
index 33dce58982..e93e700c93 100644
--- a/activerecord/lib/active_record/associations/collection_proxy.rb
+++ b/activerecord/lib/active_record/associations/collection_proxy.rb
@@ -33,6 +33,7 @@ module ActiveRecord
       def initialize(klass, association) #:nodoc:
         @association = association
         super klass, klass.arel_table
+        self.default_scoped = true
         merge! association.scope(nullify: false)
       end
 
diff --git a/activerecord/test/cases/associations/has_many_associations_test.rb b/activerecord/test/cases/associations/has_many_associations_test.rb
index 28400970fb..2aa3ecb108 100644
--- a/activerecord/test/cases/associations/has_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_associations_test.rb
@@ -1712,4 +1712,9 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
       assert_equal 0,  post.comments.count
     end
   end
+
+  test "collection proxy respects default scope" do
+    author = authors(:mary)
+    assert !author.first_posts.exists?
+  end
 end