Configuration generator into config/application.rb

application.rb

config.generators do |g|
  g.assets     false
  g.helper     false
  g.scaffold_controller false
  g.erb false
  g.resource_route false
  g.test_framework :rspec,
                   fixtures: true,
                   controller_specs: true,
                   helper_specs: false,
                   routing_specs: false
  g.fixture_replacement :factory_bot, dir: 'spec/factories'
end