Make sure Relation responds to dynamic finder methods

1 files changed, 9 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb
index 52a8bea567..d7cd78593f 100644
--- a/activerecord/lib/active_record/relation.rb
+++ b/activerecord/lib/active_record/relation.rb
@@ -143,7 +143,15 @@ module ActiveRecord
     end
 
     def respond_to?(method)
-      @relation.respond_to?(method) || Array.method_defined?(method) || super
+      return true if @relation.respond_to?(method) || Array.method_defined?(method)
+
+      if match = DynamicFinderMatch.match(method)
+        return true if @klass.send(:all_attributes_exists?, match.attribute_names)
+      elsif match = DynamicScopeMatch.match(method)
+        return true if @klass.send(:all_attributes_exists?, match.attribute_names)
+      else
+        super
+      end
     end
 
     def to_a