'default' => env('DB_CONNECTION', 'mysql'),

    'connections' => [
        'mysql' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', 'localhost'),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE', 'erptenants'),
            'username' => env('DB_USERNAME', 'root'),
            'password' => env('DB_PASSWORD', ''),
            'charset' => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix' => '',
            'strict' => false,
            'engine' => null,
        ],
        'tenant' => [
            'driver' => 'mysql',
            'host' => env('DB_HOST', ''),
            'port' => env('DB_PORT', '3306'),
            'database' => env('DB_DATABASE', ''),
            'username' => env('DB_USERNAME', ''),
            'password' => env('DB_PASSWORD', ''),
            'charset' => 'utf8',
            'collation' => 'utf8_unicode_ci',
            'prefix' => '',
            'strict' => false,
            'engine' => null,
        ],
    ],

class TenantIdentification
{
    public function handle($request, Closure $next)
    {

        $tk = "HYD"; //hardcoded for time being

        $tenant = AppModelsTenant::where('tenantKey', $tk)->first();

        Config::set('database.connections.tenant.host', env('DB_HOST', $tenant ->host));
        Config::set('database.connections.tenant.username', env('DB_USERNAME', $tenant ->username));
        Config::set('database.connections.tenant.password', env('DB_PASSWORD', $tenant ->password));
        Config::set('database.connections.tenant.database', env('DB_DATABASE', $tenant ->database));


        return $next($request);
    }
}

<?php

namespace AppModels;

use IlluminateFoundationAuthUser as Authenticatable;

class User extends Authenticatable
{
    protected $connection = 'tenant';
    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];


}

public function verify(Request $request)
    {

        $username = $request->username;
        $password = $request->password;

        $user = AppModelsUser::where('username',$username)->where('password',$password)->first();

        var_dump($user);
    }