How to get sum value from different table based id relation laravel then display on view? - eloquent

Question

I get stuck on this and i newbie on laravel :(
I can't display list of user score test.
This is my code :
My User Model :
class User extends Authenticatable
{
use Notifiable;
protected $fillable = [
'name', 'username', 'email', 'password',
];
protected $hidden = [
'password', 'remember_token',
];
protected $casts = [
'email_verified_at' => 'datetime',
];
public function test()
{
return $this->hasOne('App\Test');
}
}
My Test Model :
class Test extends Model
{
protected $fillable = [
'user_id', 'test_a', 'test_b',
];
public function user()
{
return $this->belongsTo('App\User');
}
}
My Controller :
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\User;
use App\Test;
use DB;
class HomeController extends Controller
{
public function index()
{
$users = User::get();
$scores = Test::with('user')
->value(DB::raw("SUM(test_a + test_b)"));
return view('home', compact('users','scores'));
}
}
My home View :
<table>
<tr>
<th>Name</th>
<th>Total Score</th>
</tr>
#foreach($users as $user)
<tr>
<td>{{ $user->username }}</td>
<td>{{ $scores }}</td>
</tr>
#endforeach
</table>
The problem is i can't display list of user and total score each user. I get eror. Anyone can help me with this??

Answer 1

You have to use closure to apply query on eloquent relationship. So
In HomeController.php
public function index()
{
$users = User::with(['test' => function($query){
$query->select('*', DB::raw("SUM(test_a + test_b) as scores"))
}])->get();
return view('home', compact('users'));
}
And in view
<table>
<tr>
<th>Name</th>
<th>Total Score</th>
</tr>
#foreach($users as $user)
<tr>
<td>{{ $user->username }}</td>
<td>{{ $user->test->scores }}</td> <!-- getting scores of user -->
</tr>
#endforeach
</table>