axios.post('index.php/login',{
    email:this.email,
    pass:this.pass
  }).then(function(res){
    console.log(res)
  }).then(function(){
    console.log(321)
  })

<?php
namespace App;
use Mongodb;
use DB;
 
class GUser extends Mongodb {
  public static function login($email) {
 
    $mongo = DB::connection('mongodb');
    $res = $mongo->collection('user')->where('email',$email)->first();
    return $res;
 
  }
}

<?php
namespace App\Http\Controllers;
 
use App\Http\Controllers\Controller;
use App\GUser;
use Illuminate\Http\Request;
 
class GUserController extends Controller{
 
  protected function login(Request $request) {
    $email = $request->input('email');
    $pass = $request->input('pass');
    $res = GUser::login($email);
    return $res;
  }
}

Route::any(‘/login','GUserController@login');