php - 如何在 Laravel 中使用组合框更改数据？

Question

我想更新组合框，但是当我运行程序时出现错误。错误说

Undefined variable: jenis (View: D:\laravel\makanan\resources\views\edit_upload.blade.php)

解决方案是什么以及使用什么语法？

这是 Controller 中的语法:

 public function prosesedit($id, Request $request)
    {
        $makan = Gambar::find($id);
        $nama_file = $makan->file;
        $jenis = JenisMkn::select('id_jenis','jenis_makanan')->get();

        if($request->hasfile('file'))
        {
            $file = $request->file('file');
            $nama_file = time()."_".$file->getClientOriginalName();
            $tujuan_upload = 'image_file';
            $file->move($tujuan_upload,$nama_file);
        }

        $makan->update([
            'file'=>$nama_file,
            'nama_makanan'=>$request->makan,
            'kode_makanan'=>$request->jenis,
            'paket'=>implode(',',$request->paket),
            'pembayaran'=>$request->transaksi,
        ]);
        return redirect(route('makan'));

这是 html

<div class="form-group">
                   <b>Jenis Makanan</b>
                   <br/>
                   <select name="jenis" id="" class="form control input-sm">
                       @foreach ($jenis as $j)
                           <option value="{{$j->id_jenis}}">{{$j->jenis_makanan}}</option>
                       @endforeach
                   </select>
               </div>

Answer 1

像这样更改 Controller 的返回:

return redirect(route('makan'))->with('jenis', $jenis);