Rails/FindEach reports issue on any class

[Korri]

Right now every instance of all.each on any class and report is as a violation by Rails/FindEach.

This is particularly with classes that only include part of ActiveRecord like https://github.com/byroot/frozen_record for example.

Expected behavior

The following class should pass validation, as this class does not includes ActiveRecord::Batches and does not support find_each.

# frozen_string_literal: true

# Example class
class TestClass
  all.each { |a| do_something a.name }
end

Actual behavior

Offenses:

app/models/test_class.rb:5:7: C: Rails/FindEach: Use find_each instead of each.
  all.each { |a| add a.name }
      ^^^^

Steps to reproduce the problem

Using the example above should be enough.

RuboCop version

Include the output of rubocop -V or bundle exec rubocop -V if using Bundler. Here's an example:

$ [bundle exec] rubocop -V
0.74.0 (using Parser 2.6.3.0, running on ruby 2.3.7 universal.x86_64-darwin18)