lib/rubocop/cop/rails/index_by.rb in rubocop-rails-2.8.1 vs lib/rubocop/cop/rails/index_by.rb in rubocop-rails-2.9.0

@@ -15,11 +15,12 @@
       #   [1, 2, 3].map { |el| [foo(el), el] }.to_h
       #   Hash[[1, 2, 3].collect { |el| [foo(el), el] }]
       #
       #   # good
       #   [1, 2, 3].index_by { |el| foo(el) }
-      class IndexBy < Cop
+      class IndexBy < Base
         include IndexMethod
+        extend AutoCorrector
 
         def_node_matcher :on_bad_each_with_object, <<~PATTERN
           (block
             ({send csend} _ :each_with_object (hash))
             (args (arg $_el) (arg _memo))