I've developed an autologin by url so that when users click on the link, they are automatically login in my website.
-> I've generated a hash based on their email address and i check the generated hash before the website log them.
This works fine and is use in newsletters..
The issue i'm facing is that the system need to be used on partners website to log in users.
I am currently developing a module to create node-based user groups. (Yeah I know, there are already some other modules, but I have some other conditions)
For this there are action links on a defined Nodetype.
A button "apply" and a button "withdraw application".
With the help of "_custom_access", "apply" is displayed or "withdraw application" if an application already exists.
So far so good.