User Sign-out question

Anvil Q&A
1

I know this is pretty basic, but how do you implement signout functionality with the Users service built into anvil?

I’m not really sure why I can’t find this in the docs…

2

Hi @nathanguyette,

you can find it here:

anvil.users.logout()

https://anvil.works/docs/users/presenting-a-login-form

2 Likes
3

Humm… I guess I should be more specific.

When logging out, I need it to force a login screen again.

How do I do this?

4

My apps are arranged so that the default form checks to see if I’m logged in, and then redirects me to either a login page or a content page accordingly.

So, after calling anvil.users.logout(), I can just take the user back to that default form with open_form() .

1 Like
5

Thank you, but can you give me an example of how this works?

6

This is off the top of my head so might require some tweaking.

In your landing page (startup form) show event :

if anvil.users.get_user():
   open_form("my_private_form")
else:
   open_form("my_login_form")

And in your “my_private_form” form, have a button that does this when clicked :

def logout_button_click(self, **event_args):
    anvil.users.logout()
    open_form("landing_page")

You could just open the “my_login_form” directly, but I tend to do a little more than just a simple logged in/not logged in so I have the extra step in there. Others may advise differently, and you can adjust to suit.

Note also, that the “landing page” can now be a start up module and doesn’t have to be a form. The docs will help you there.

edit - ah, yes. As @stucork’s link below says, you’ll need to use a form rather than a start up module to do it my way as you cannot open_form() on a module.

2 Likes
7

I typically do something like this post - where the behaviour of logging out is the same behaviour that I would use in the startup module

Very similar to @david.wylie’s snippet above.

1 Like