I am using default Eloquent authentication driver in my Laravel 5 application. I want to allow user to login with username or mobile number as well for those who have entered th
I found this discussion on laracasts: https://laracasts.com/discuss/channels/general-discussion/log-in-with-username-or-email-in-laravel-5
It allows the user to enter his username or his email. Laravel checks the field if it is an email or an username (by validating it) and depending on what it is it calls the $auth->attempt() function with the correct field.
The same thing should be applicable for your username or mobilenumber-problem.