Trouble with new rails app

Question

I have just created a new rails app (on the CL, using rails new), I am on 4.2.6, but it seems like before I can do anything to the app that i've hit errors.

first...

/config/environments/development.rb:53:in `block in <top (required)>':
  uninitialized constant ActiveSupport::EventedFileUpdateChecker (NameError)

then once I comment that out...

/config/initializers/new_framework_defaults.rb:15:in `<top (required)>':
  undefined method `to_time_preserves_timezone=' for ActiveSupport:Module (NoMethodError)

and once that is commented out...

 /config/initializers/new_framework_defaults.rb:21:in `<top (required)>':
  undefined method `halt_callback_chains_on_return_false=' for ActiveSupport:Module (NoMethodError)

and lastly...

.gem/ruby/2.2.3/gems/actionmailer-4.2.5/lib/action_mailer/base.rb:569:in `method_missing':
  undefined method `perform_caching=' for ActionMailer::Base:Class (NoMethodError)

everything I can turn up on Google suggests these are Rails 5 related things. I'm not sure how to get around them, or how to create an app that is still specific to 4.2.6.

Answer 1

If still you want to use Rails 5 comment the below line in development.rb file: config.action_mailer.perform_caching = false

And after doing that you may get:
ActionView::Template::Error (couldn't find file 'ation_cable' with type 'application/javascript'

Then remove = from //= require action_cable in your cable.js file.