错误“试图在Dompdf Laravel 5.8上获得非对象的属性'pertanyaan'

Question

我有一个视图，我想有一个下载PDF的链接。

视图

<div class="col-lg-12 col-xs-12">
    <div class="box">
        <a href="{{ route('pdf',['download'=>'pdf']) }}">Download PDF</a>
        <div class="box-header">
            <div style="text-align:center"><h3 class="box-title">PEMELIHARAAN DAN PERAWATAN ALAT UJI </h3></div>
            <div style="text-align:center">Jln. Kabupaten Sragen</div>
        </div>

        <p> Laporan : {{ $pemeliharaan->status }} </p>
        <p> Tanggal : {{ $pemeliharaan->created_at }} </p>
        <p> Jenis Alat : {{ $pemeliharaan->alat->nama_alat }} </p>
        <p> User : {{ $pemeliharaan->user->name }} </p>

        <div class="box">
            <div class="box-header">
                <h3 class="box-title"></h3>
            </div>
            <div class="box-body no-padding">
                <table class="table table-condensed">
                    <tbody>
                    <tr>
                        <th style="width: 10px">#</th>
                        <th>Pertanyaan</th>
                        <th>Hasil</th>
                    </tr>
                    <tr>
                        <td>1.</td>
                        <td>{{ $pemeliharaan->pertanyaan['question1'] }}</td>
                        <td>{{ $pemeliharaan->pertanyaan['answer1'] }}</td>
                    </tr>
                    <tr>
                        <td>2.</td>
                        <td>{{ $pemeliharaan->pertanyaan['question2'] }}</td>
                        <td>{{ $pemeliharaan->pertanyaan['answer2'] }}</td>
                    </tr>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</div>

链接“下载”有错误。

只显示404

调节器

public function showQuestion(Request $request, $id)
{
    $pemeliharaan = Pemeliharaan::findOrFail($id);
    $pemeliharaan->pertanyaan = json_decode($pemeliharaan->pertanyaan, true);

    if ($request->has('download')) {
        $pdf = PDF::loadView('users.view_question', $pemeliharaan);

        return $pdf->download('view_question.pdf');
    }

    return view('users.view_question', compact('pemeliharaan'));
}

路线

Route::get('/user/show/question/pdf/{id}','userController@showQuestion')->name('pdf');
Route::get('user/show/question/{id}', 'userController@showQuestion')->name('usershowQuestion');

有人可以帮我下载代码吗？

Answer 1

您没有将id route参数提供给命名路由'pdf'。这导致线$pemeliharaan = Pemeliharaan::find($id)产生null，后来出现错误。

试试这个：

{{ route('pdf', [ $id ] }}

为了使它工作，您必须向视图提供变量$id。你可以这样做

return view('your-view')->with([
    "id" => $id
]);