To make this crate work you need to create a collection named casbin.
Don't forget to put The unique key index on columns ptype,v0,v1,v2,v3,v4,v5
The crate is not 100% tested and will maybe have some bugs. Feel free to make a push request to fix those bugs 😃.
The code can be improved for sure but it wasn't the main goal.
A lot of the code was taken from this repo: https://github.com/casbin-rs/diesel-adapter