Controller filters and helpers

Devise will create some helpers to use inside your controllers and views. To set up a controller with user authentication, just add this before_action (assuming your devise model is 'User'):

before_action :authenticate_user!

For Rails 5, note that protect_from_forgery is no longer prepended to the before_action chain, so if you have set authenticate_user before protect_from_forgery, your request will result in "Can't verify CSRF token authenticity." To resolve this, either change the order in which you call them, or use protect_from_forgery prepend: true.

If your devise model is something other than User, replace "_user" with "_yourmodel". The same logic applies to the instructions below.

To verify if a user is signed in, use the following helper:

user_signed_in?

For the current signed-in user, this helper is available:

current_user

You can access the session for this scope:

user_session

After signing in a user, confirming the account or updating the password, Devise will look for a scoped root path to redirect to. For instance, when using a :user resource, the user_root_path will be used if it exists; otherwise, the default root_path will be used. This means that you need to set the root inside your routes:

root to: 'home#index'

You can also override after_sign_in_path_for and after_sign_out_path_for to customize your redirect hooks.

Notice that if your Devise model is called Member instead of User, for example, then the helpers available are:

before_action :authenticate_member!

member_signed_in?

current_member

member_session