Undefined variable: errors in laravel foreach - php

Question

I'm trying to retrieve data from database into my Laravel CRUD, but it says undefined variable in my view.
Here's the view frame.blade.php
#foreach($mahasiswa as $mhs)
<tr>
<td>{{$mhs->id}}</td>
<td>{{$mhs->nim}}</td>
<td>{{$mhs->nama}}</td>
<td>{{$mhs->alamat}}</td>
<td>{{$mhs->fakultas}}</td>
<td><a onclick="event.preventDefault();editmhsForm({{$mhs->id}});" href="#" class="edit open-modal" data-toggle="modal" value="{{$mhs->id}}"><i class="material-icons" data-toggle="tooltip" title="Edit"></i></a>
<a onclick="event.preventDefault();deletemhsForm({{$mhs->id}});" href="#" class="delete" data-toggle="modal"><i class="material-icons" data-toggle="tooltip" title="Delete"></i></a>
</td>
</tr>
#endforeach
Here's the controller
use App\Dashboard;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;
class DashboardController extends Controller
{
public function index(Request $request)
{
$mhs = Dashboard::orderBy('id', 'desc')->paginate(5);
return view('frame')->with('frame', $mhs);
}
And here's the route
Route::group(['prefix' => 'mahasiswa'], function () {
Route::get('/dashboard/{id}', [
'uses' => 'DashboardController#show',
'as' => 'mahasiswa.show',
]);
Route::post('/dashboard/', [
'uses' => 'DashboardController#store',
'as' => 'mahasiswa.store',
]);
Route::put('/dashboard/{id}', [
'uses' => 'DashboardController#update',
'as' => 'mahasiswa.update',
]);
Route::delete('/dashboard/{id}', [
'uses' => 'DashboardController#destroy',
'as' => 'mahasiswa.destroy',
]);
});
I keep getting "Undefined variable: mahasiswa" on my view
Does anyone know the reason for this?

Answer 1

You are passing a data called frame and trying to iterate over $mahasiswa, so either change your blade to this:
#foreach($frame as $mhs)
<tr>
<td>{{$mhs->id}}</td>
<td>{{$mhs->nim}}</td>
<td>{{$mhs->nama}}</td>
<td>{{$mhs->alamat}}</td>
<td>{{$mhs->fakultas}}</td>
<td><a onclick="event.preventDefault();editmhsForm({{$mhs->id}});" href="#" class="edit open-modal" data-toggle="modal" value="{{$mhs->id}}"><i class="material-icons" data-toggle="tooltip" title="Edit"></i></a>
<a onclick="event.preventDefault();deletemhsForm({{$mhs->id}});" href="#" class="delete" data-toggle="modal"><i class="material-icons" data-toggle="tooltip" title="Delete"></i></a>
</td>
</tr>
#endforeach
or in your controller:
public function index(Request $request)
{
$mhs = Dashboard::orderBy('id', 'desc')->paginate(5);
return view('frame')->with('mahasiswa', $mhs);
}

Answer 2

Try this way:
First in the controller assign your DB query results to $mahasiswa:
use App\Dashboard;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;
class DashboardController extends Controller
{
public function index(Request $request)
{
$mahasiswa = Dashboard::orderBy('id', 'desc')->paginate(5);
return view('frame', compact('mahasiswa'));
}
Then in the view:
#foreach($mahasiswa as $mhs)
<tr>
<td>{{$mhs->id}}</td>
<td>{{$mhs->nim}}</td>
<td>{{$mhs->nama}}</td>
<td>{{$mhs->alamat}}</td>
<td>{{$mhs->fakultas}}</td>
<td><a onclick="event.preventDefault();editmhsForm({{$mhs->id}});" href="#" class="edit open-modal" data-toggle="modal" value="{{$mhs->id}}"><i class="material-icons" data-toggle="tooltip" title="Edit"></i></a>
<a onclick="event.preventDefault();deletemhsForm({{$mhs->id}});" href="#" class="delete" data-toggle="modal"><i class="material-icons" data-toggle="tooltip" title="Delete"></i></a>
</td>
</tr>
#endforeach
It will get rid of that error.
I used return view('frame', compact('mahasiswa')); i.e compact instead of with. I think it's a lot cleaner and less confusing for starters.

Answer 3

it can still work this way:
use App\Dashboard;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;
class DashboardController extends Controller
{
public function index(Request $request)
{
$data['mahasiswa'] = Dashboard::orderBy('id', 'desc')->paginate(5);
return view('frame',$data);
}
view
#foreach($mahasiswa as $mhs)
<tr>
<td>{{$mhs->id}}</td>
<td>{{$mhs->nim}}</td>
<td>{{$mhs->nama}}</td>
<td>{{$mhs->alamat}}</td>
<td>{{$mhs->fakultas}}</td>
<td><a onclick="event.preventDefault();editmhsForm({{$mhs->id}});" href="#" class="edit open-modal" data-toggle="modal" value="{{$mhs->id}}"><i class="material-icons" data-toggle="tooltip" title="Edit"></i></a>
<a onclick="event.preventDefault();deletemhsForm({{$mhs->id}});" href="#" class="delete" data-toggle="modal"><i class="material-icons" data-toggle="tooltip" title="Delete"></i></a>
</td>
</tr>
#endforeach