Rails - How to override devise SessionsController to perform specific tasks when user signs in?

Question

Using Devise to manage users sessions / registrations I would need to perform specific tasks (updating some fields in the users table for this specific user for example) eac

Answer 1

If you look at Devise's implementation of sessions_controller#create, you'll notice that they yield if you pass a block.

So, just subclass their sessions controllers and pass a block when you call super. To do that, first tell Devise in routes.rb that you'd like to use your own sessions controller:

devise_for :users, controllers: { sessions: 'users/sessions' }

And then create a SessionsController class and pass a block when you call super in your create method. It would look something like this:

class Users::SessionsController < Devise::SessionsController
  layout "application"

  # POST /login
  def create
    super do |user|
      if user.persisted?
        user.update(foo: :bar)
      end
    end
  end
end

Most of the Devise controller methods accept a block, so you could do this for registration, forgot password, etc as well.