The Devise Gem makes it really easy to create a full authentication app with Ruby on Rails. In the video below, I will walk you through setting up and installing the Devise Gem on your rails app. Below the video are all the commands and code that I used to create the application.
First off, we need to create our new rails application.
$ rails new devise $ cd devise $ mate .
Inside of your text editor, you'll want to add the devise to your 'Gemfile', which is located in the application root directory. Add the following line to the 'Gemfile':
Back in your terminal window:
$ bundle install $ rails generate devise:install $ rails generate devise user $ rake db:migrate $ rails g controller home $ rails g controller dashboard
Inside of your '/app/controllers/home_controller.rb' file, add the following:
def index if user_signed_in? redirect_to :controller=&gt;'dashboard', :action =&gt; 'index' end end
Inside of your '/app/controllers/dashboard.rb' file, add the following:
before_filter :authenticate_user! def index end
Inside of your '/app/views/home/' and '/app/views/dashboard/' directories create a new file called 'index.html.erb' and add the following code into each file:
Welcome to our Website
Welcome to your dashboard
Now, inside of your '/app/views/layouts/application.html.erb' add the following code below the opening 'body' tag: