下载pdf后重定向查看

Question

我有一个视图viewarticles。在那里，存在一个锚标签，用于下载 PDF。当我第一次单击链接时，会以模式打开一个注册表单，如果用户提交了他的详细信息，那么它将继续控制器并保存详细信息，然后创建会话，然后下载 PDF。但我也需要返回相同的视图。创建重定向会话后，无需再次填写详细信息。意味着每次填写表格并下载 PDF 直到会话有效。

@foreach($articles as $article)
 <tr class="table-active">
@if(session()->has('username'))
  <td>
 <a href="{{ route('downloadpdf',['jname' => $article->image]) }}"><span class="badge badge-primary">Download PDF</span></a>
@else
  <a href="#" data-toggle="modal" data-target="#login-modal{{ $article->id }}">Login</a>
@endif
 </td></tr>
<!-- Register modal -->
<div class="modal fade" id="login-modal{{ $article->id }}" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true" style="display: none;">
<div class="modal-dialog">
  <div class="loginmodal-container">
     <h1>Article Download Request</h1><br>
     <form method="POST" action="{{ route('insertdownloadpdf') }}">
      {{csrf_field()}}
       <input type="text" name="name" placeholder="Name">
      <input type="text" name="pdfname" placeholder="Name" value="{{ $article->image }}">
       <input type="text" name="volume_id" placeholder="Name" value="{{ $article->volume_id }}">
     <input type="email" name="email" placeholder="Email">
       <input type="text" name="designation" placeholder="Designation">
       <input type="text" name="organisation" placeholder="Organisation/College">
      <input type="number" name="number" placeholder="Phone Number">
      <input type="submit" class="login loginmodal-submit" value="Submit">
       </form>
  </div>
   </div>
 </div>
 @endforeach

我的路线是：

Route::POST('insertdownloadpdf','foruserview@insertdownloadpdf')->name('insertdownloadpdf');

控制器方法是：

public function insertdownloadpdf(Request $request)
{
    $userdetails = new userdetail;

   $userdetails->name = $request->name;
   $userdetails->email = $request->email;
   $userdetails->designation = $request->designation;
   $userdetails->organisation = $request->organisation;
   $userdetails->number = $request->number;
   $userdetails->save();
   $pdffile = $request->pdfname;
   session()->put('username','Successfully Inserted');

 $file= public_path(). "/storage/upload_pic/";  //path of your directory
            $headers = array(
                'Content-Type: application/pdf',
            );
    return Response::download($file.$pdffile, 'articles.pdf', $headers);

     $journals = journal::all();
    $articles = article::where('volume_id',$request->volume_id)->with('journal','volume')->get();

   return view('viewarticles',compact('journals','articles'));
}

但它不起作用。如何下载 PDF 文件然后返回同一页面。

Answer 1

改变

return Response::download($file.$pdffile, 'articles.pdf', $headers);

到

Response::download($file.$pdffile, 'articles.pdf', $headers);

一个方法内只能返回一次。