UsersController.php

<?php

namespace App\Http\Controllers;

class UsersController extends Controller
{


    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {

    	// $request/$_POST = [
    	// name => Joe Doe,
    	// email => joe.doe.example.com,
    	// password => secret,
    	// password_confirmation => secret,
    	// role => 'seller',
    	// ];
    	// 


    	if ( $request['role'] == 'seller') {

    		# proceed this way

    	} elseif ( $request['role'] == 'buyer') {

    		# proceed this another
    	} else {

    		# Do this
    	}
    
    }


}