Devise. A Blessing and an absolute curse for noobs. Sure, logins and logouts made easy, but customizing devise to suit your needs can be a little bit daunting for a noobie. Below is the list of stuff I’ve run into over the years.

These are the problems and potential solutions, but a little bit of knowledge can go a LONG way. Devise offers customization. This customization usually happens when rails is loaded. That means the customization typically needs to happen in initializers. Those are kept in config/initializers/devise.rb, spec/support/devise.rb, test/test_helper.rb. Those first two files will not come automatically for you, you’ll have to create them.

Testing Controllers with a User

Add this line of code to spec/support/devise.rb when receiving undefined methodauthenticate’ for nil:NilClass`

RSpec.configure do |config|
  config.include Devise::TestHelpers, type: :controller

Then your test should start passing.

See this StackOverflow post for more information

Editing Devise Views

Editing Devise Controllers

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