Devise - Run checks after user logged in, redirect if error
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01-01-2021 - |
Question
I'm working on an e-commerce application. When a user logs into my app, I want to make a check to my external subscription handler and make sure that their subscription is still active and not expired/failed/whatever.
I successfully figured out how to use a Warden callback in my initializers/devise.rb
to perform a check on the model after login. However, if there is a problem, I want to log them out again and redirect to a certain page that tells them what to do next.
Here is what I have. I know I can't use redirect_to
from the callback. Given that, what is the best way to do what I'm trying to do?
Warden::Manager.after_authentication do |user, auth, opts|
begin
user.check_active_subscription # this works, and will raise one of several exceptions if something is goofy
rescue
redirect_to "/account/expired" # obviously this won't work, but see what I'm trying to do?
end
end
Solution
Just let the callback raise the exception and rescue from it in your controller. E.g.:
Warden::Manager.after_authentication do |user, auth, opts|
user.check_active_subscription
end
class SessionsController < ApplicationController
def create
# Authenticate
rescue SubscriptionExpiredException
# Logout
redirect_to "/account/expired"
end
end
You could also use rescue_from
in your ApplicationController
like this:
class ApplicationController
rescue_from SubscriptionExpiredException, :with => :deny_access
def deny_access
redirect_to "/account/expired"
end
end