force user to login before action devise rails

To force users to login before performing an action in a Ruby on Rails application using Devise, you can follow these steps:

Step 1: Install Devise Gem Add Devise to your Gemfile by including the following line:

gem 'devise'

Then, run bundle install in your terminal to install the gem.

Step 2: Generate Devise Configuration Run the following command in your terminal to generate the Devise configuration files:

rails generate devise:install

This command will create an initializer file and a configuration file for Devise.

Step 3: Generate User Model Generate a User model using the following command:

rails generate devise User

This will create a User model with the necessary attributes and migration file.

Step 4: Run Database Migration Migrate the database to include the User table by running:

rails db:migrate

Step 5: Configure Routes Open the config/routes.rb file and add the following line to ensure that Devise handles user authentication:

devise_for :users

Step 6: Add Authentication Filter In the controller where you want to enforce the login requirement, add the following line at the top of the file:

before_action :authenticate_user!

This will ensure that the user is authenticated before any action is performed.

Step 7: Customize Redirect Path By default, Devise redirects users to the login page when authentication fails. If you want to customize the redirect path, you can add the following method to your controller:

def after_sign_out_path_for(resource_or_scope)
  new_user_session_path
end

Replace new_user_session_path with the path you want to redirect to.

And that's it! Now, whenever a user tries to access an action that requires authentication, they will be redirected to the login page.