Remove deprecated constant `AbstractController::Helpers::MissingHelperError`

actionpack/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Remove deprecated constant `AbstractController::Helpers::MissingHelperError`.
+
+    *Rafael Mendonça França*
+
 *   Fix a race condition that could cause a `Text file busy - chromedriver`
     error with parallel system tests
 

actionpack/lib/abstract_controller/helpers.rb

@@ -5,7 +5,6 @@ require "active_support/core_ext/name_error"
 
 module AbstractController
   module Helpers
-    include ActiveSupport::Deprecation::DeprecatedConstantAccessor
     extend ActiveSupport::Concern
 
     included do
@@ -24,23 +23,6 @@ module AbstractController
       self._helpers = define_helpers_module(self)
     end
 
-    class DeprecatedMissingHelperError < LoadError
-      def initialize(error, path)
-        @error = error
-        @path  = "helpers/#{path}.rb"
-        set_backtrace error.backtrace
-
-        if /^#{path}(\.rb)?$/.match?(error.path)
-          super("Missing helper file helpers/%s.rb" % path)
-        else
-          raise error
-        end
-      end
-    end
-    deprecate_constant "MissingHelperError", "AbstractController::Helpers::DeprecatedMissingHelperError",
-      message: "AbstractController::Helpers::MissingHelperError has been deprecated. If a Helper is not present, a NameError will be raised instead.",
-      deprecator: AbstractController.deprecator
-
     def _helpers
       self.class._helpers
     end

actionpack/test/controller/helper_test.rb

@@ -264,12 +264,6 @@ class HelperTest < ActiveSupport::TestCase
     assert_equal "smth", AllHelpersController.helpers.config.my_var
   end
 
-  def test_missing_helper_error_is_deprecated
-    assert_deprecated(AbstractController.deprecator) do
-      AbstractController::Helpers::MissingHelperError
-    end
-  end
-
   private
     def expected_helper_methods
       TestHelper.instance_methods

guides/source/7_2_release_notes.md

@@ -52,6 +52,8 @@ Please refer to the [Changelog][action-pack] for detailed changes.
 
 *   Remove deprecated constant `ActionDispatch::IllegalStateError`.
 
+*   Remove deprecated constant `AbstractController::Helpers::MissingHelperError`.
+
 ### Deprecations
 
 ### Notable changes