Error TokenMismatchException in VerifyCsrfToken.php line 68: - sql

Question

I want to do multiple edit, I want to edit from the data I checked following script .blade, I found the TokenMismatchException error in VerifyCsrfToken.php line 68: when updating.
<form name="form" action="{{url('/update-kb')}}" method="post" onsubmit="return deleteConfirm();"/>
<div class="table table-responsive">
<table id="example1" class="table table-bordered">
<thead>
<tr class="info">
<th width="3%"><input type="checkbox" name="select_all" id="select_all" value=""/></th>
<th>No</th>
<th>Data lengkap</th>
<th>Aksi</th>
</tr>
</thead>
<tbody>
<?php $i = 1; ?>
#foreach( $datasiswa as $row )
<tr>
<td>
<label class="checkbox-inline"><input type="checkbox" name="checked_id[]" class="checkbox" value="{{$row->id}}"/>
</label>
</td>
<td width="5%">{{ $i }}</td>
<td width="95%">
<table class="table">
<tr>
<td class="info">Nama panggilan</td>
<td>{{$row->nm_panggilan}}</td>
<td class="warning">Pekerjaan ibu</td>
<td>{{$row->pekerjaan_ibu}}</td>
</tr>
<tr>
<td class="info">Jenis kelamin</td>
<td>{{$row->jenis_kelamin}}</td>
<td class="warning">No. Handphone</td>
<td>{{$row->hp_ibu}}</td>
</tr>
<tr>
<td class="info">Tempat, Tanggal lahir</td>
<td>{{$row->tempat}}, {{$row->tanggal_lahir}}</td>
<td class="warning">Alamat</td>
<td>{{$row->alamat}}</td>
</tr>
<tr>
<td class="info">Status anak</td>
<td>{{$row->status_anak}}</td>
<td class="warning">Golongan darah</td>
<td>{{$row->goldar}}</td>
</tr>
<tr>
<td class="info">Agama</td>
<td>{{$row->agama}}</td>
<td class="warning">Nama wali</td>
<td>{{$row->nm_wali}}</td>
</tr>
<tr>
<td class="info">Kewarganegaraan</td>
<td>{{$row->kewarganegaraan}}</td>
</tr>
<tr>
<td class="info">Anak ke-</td>
<td>{{$row->anak_ke}}</td>
</tr>
<tr>
<td class="info">Kelas</td>
<td>{{$row->kelas}}</td>
</tr>
</table>
</td>
<td>
<a href="{!! url('/'.$row->id.'/edit-siswa') !!}">
<button class="btn btn-default btn-block"><i class="fa fa-edit"></i></button><br>
</a>
<a href="{!! url('/'.$row->id.'/delete-siswa') !!}">
<button class="btn btn-danger btn-block"><i class="fa fa-trash"></i></button>
</a>
</td>
</td>
</tr>
<?php $i++; ?>
#endforeach
</tbody>
</table>
<div class="col-md-3">
<input type="submit" class="btn btn-danger" name="delete_submit" value="Hapus"/>
</div>
</div>
</form>
But I still have error, what causes it?
public function updatekb($id, Request $request)
{
$data = Datasiswa::find($id);
if (isset($request->delete_submit)) {
$idArr = $request->checked_id;
foreach ($idArr as $id) {
DB::update('update tb_siswa, tb_pernyataan set tb_pernyataan.kelas = "cekcek" where tb_pernyataan.kelas = "TK A" and tb_siswa.sekolah = "KB TK KHALIFAH 25" and id = "' . $id . '" ');
}
return back();
Session::flash('sukses', 'Data berhasil di update', compact('data'));
}
}

Answer 1

Add below to your form element.
<input type="hidden" name="_token" value="{{ csrf_token() }}" />
Some answers are suggesting to disable csrf protection which is possible but NOT RECOMENDED. This leaves your application vulnureable.

Answer 2

Laravel use CSRF token to verify user request. so you have to use it on yevery request if you want to disable it then you can disable it from See here how to disable it or you can use it as
{{ csrf_field() }}
or
<input type="hidden" name="_token" value="{{ csrf_token() }}"/>

Answer 3

You can resolve this issue in two ways:-
First One:-
{{ csrf_field() }}
or
<input type="hidden" name="_token" value="{{ csrf_token() }}"/> // add this in form
Or the other (simpler) way, inside your app\Http\Middleware/VerifyCsrfToken.php add
protected $except = [
'update-kb', // your route name
];
Hope it helps!