rails设计挂钩到on_login

Question

I'm looking to hook into devise after login / after session create. How would I go about doing this?

Basically I want to set a users location every time they login, and to do that I need an after login hook of sorts.

Answer 1

Devise is built on Warden, so you can use Warden's after_authentication hook.

Put this in an initializer:

Warden::Manager.after_authentication do |user,auth,opts|
  # do something with user
end

The remote IP address and other request info is stored in auth.request (ie auth.request.remote_ip).

See https://github.com/hassox/warden/wiki/callbacks

Answer 2

Devise updates the value of the user.current_sign_in_at timestamp on successful login. So, you could simply add a before_save filter to your User model. In that filter, check to see if the value of this field has changed, and if it has, set the users location.

BTW - I'm not sure what you mean by "location" - if you mean IP address, Devise already stores that for you.

Answer 3

Here's a page from the devise wiki: How To: Redirect to a specific page on successful sign in .

In summary, the recommendation is to add the following method to the application controller:

app/controllers/application_controller.rb

def after_sign_in_path_for(resource)
    custom_location_for(resource) || welcome_path
end

In the above code, resource means the object (user, account, etc) that you've implemented devise authentication for. (The object that has the devise_for in your routes.)