Devise Snippets

bundle add devise
bundle install

rails g devise:install

class TurboDeviseController < ApplicationController
  class Responder < ActionController::Responder
    def to_turbo_stream
      controller.render(options.merge(formats: :html))
    rescue ActionView::MissingTemplate => error
      if get?
        raise error
      elsif has_errors? && default_action
        render rendering_options.merge(formats: :html, status: :unprocessable_entity)
      else
        redirect_to navigation_location
      end
    end
  end

  self.responder = Responder
  respond_to :html, :turbo_stream
end

# /config/initializers/devise.rb

# Turbo doesn't work with devise by default.
# Keep tabs on https://github.com/heartcombo/devise/issues/5446 for a possible fix
# Fix from https://gorails.com/episodes/devise-hotwire-turbo
class TurboFailureApp < Devise::FailureApp
  def respond
    if request_format == :turbo_stream
      redirect
    else
      super
    end
  end

  def skip_format?
    %w(html turbo_stream */*).include? request_format.to_s
  end
end


# ...
Devise.setup do |config|
  # ...
  
  # ==> Controller configuration
  # Configure the parent class to the devise controllers.
  config.parent_controller = 'TurboDeviseController'
  
  # ...

  # ==> Navigation configuration
  # ...
  config.navigational_formats = ['*/*', :html, :turbo_stream]

  # ...

  # ==> Warden configuration
  # ...
  config.warden do |manager|
    manager.failure_app = TurboFailureApp
  #   manager.intercept_401 = false
  #   manager.default_strategies(scope: :user).unshift :some_external_strategy
  end
  
  # ...
end

# app/views/layouts/application.html.erb, above the <%= yield %>
<% if notice %>
  <p class="alert alert-success"><%= notice %></p>
<% end %>
<% if alert %>
  <p class="alert alert-danger"><%= alert %></p>
<% end %>


# config/routes.rb
Rails.application.routes.draw do
  devise_scope :user do
    # Redirests signing out users back to sign-in
    get "users", to: "devise/sessions#new"
  end
devise_for :users
end