False-positive on Rails/LexicallyScopedActionFilter

[pyromaniac]

Hello, found out that Rails/LexicallyScopedActionFilter doesn't consider method aliases.

---

Expected behavior

I believe that the cop should consider aliased methods as explicitly defined.

Actual behavior

The cop ignored method alias.

Steps to reproduce the problem

class FooController < ApplicationController
  before_action :authorize!, only: %i[index show]
  def index
  end
  alias_method :show, :index
  
  private

  def authorize!
  end
end

This example will produce Rails/LexicallyScopedActionFilter: show is not explicitly defined on the class.

RuboCop version

$ [bundle exec] rubocop -V
1.20.0 (using Parser 3.0.2.0, rubocop-ast 1.11.0, running on ruby 2.7.4 x86_64-darwin20)
  - rubocop-performance 1.11.5
  - rubocop-rails 2.11.3
  - rubocop-rspec 2.4.0