@klass also uses DynamicFinderMatch, so no need for it on the relation

activerecord/lib/active_record/relation.rb

@@ -358,15 +358,6 @@ def method_missing(method, *args, &block)
         scoping { @klass.send(method, *args, &block) }
       elsif arel.respond_to?(method)
         arel.send(method, *args, &block)
-      elsif match = DynamicFinderMatch.match(method)
-        attributes = match.attribute_names
-        super unless @klass.send(:all_attributes_exists?, attributes)
-
-        if match.finder?
-          find_by_attributes(match, attributes, *args)
-        elsif match.instantiator?
-          find_or_instantiator_by_attributes(match, attributes, *args, &block)
-        end
       else
         super
       end

activerecord/test/cases/relations_test.rb

@@ -32,6 +32,11 @@ def test_apply_relation_as_where_id
     assert_equal 5, Post.where(:id => post_authors).size
   end
 
+  def test_dynamic_finder
+    x = Post.where('author_id = ?', 1)
+    assert x.klass.respond_to?(:find_by_id), '@klass should handle dynamic finders'
+  end
+
   def test_multivalue_where
     posts = Post.where('author_id = ? AND id = ?', 1, 1)
     assert_equal 1, posts.to_a.size