Please check https://github.com/MrJuliuss/syntara , this will give you some good ideas.

How about creating a view in your DB. The view can be a select of the common fields of the 3 user type tables. Then in your model use the view as the table rather than any one of the different user tables

This blog post can be useful : http://richardbagshaw.co.uk/blog/laravel-user-types-and-polymorphic-relationships/

I share the idea of PSYAO . You can do a table:

AUTHENTICATIONS

id username password group_id group_type

USER id ADMIN id BUSSINES id

I also found some packages to do what you want or to solve your problem

https://github.com/ollieread/multiauth

https://github.com/Toddish/Verify-L4

https://github.com/Zizaco/entrust

Not sure if you ever fixed this issue, but my multiauth package (mentioned above) allows you to use Auth for all of the user types.

https://github.com/ollieread/multiauth