Pattern: Missing use of Rails.root.join
Issue: -
This rule is used to identify usages of file path joining process to use Rails.root.join
clause.
# bad
Rails.root.join('app/models/goober')
File.join(Rails.root, 'app/models/goober')
"#{Rails.root}/app/models/goober"
# good
Rails.root.join('app', 'models', 'goober')