/ upload /处的MultiValueDictKeyError

Question

我需要有关Django的帮助，单击下载按钮时，我总是遇到MultiValueDictKeyError。它在/ upload /中显示MultiValueDictKeyError “ my_file”，但不确定几次尝试后如何解决。以下是我的模型，视图和模板页面的代码。请提供您的建议。

files_ul_dl.html

    <form method="post" enctype="multipart/form-data">{% csrf_token %}
                <input type="file" name="my_file">
                <button class="btn btn-secondary" type="submit">Upload</button>
            </form>
        </div>
        <hr>

        <h4>File Type Count</h4>
        <table class="table">
          <thead>
            <tr>
                {% for file_type in file_types %}
                    <th scope="col">{{ file_type }}</th>
                {% endfor %}
            </tr>
          </thead>
          <tbody>
            <tr>
                {% for file_type_count in file_type_counts %}
                    <td>{{ file_type_count }}</td>
                {% endfor %}
            </tr>
          </tbody>
        </table>

        <br/>

        <h4>Files</h4>
        <table class="table">
          <thead>
            <tr>
              <th scope="col">#</th>
              <th scope="col">file name</th>
              <th scope="col">size</th>
              <th scope="col">file type</th>
              <th scope="col">upload date</th>
              <th scope="col"></th>
            </tr>
          </thead>
          <tbody>
            {% for file in files %}
                {% url 'files_upload:download_file' as download_file_url%}

                <tr>
                  <th scope="row">{{ forloop.counter }}</th>
                  <td>{{ file.upload.name }}</td>
                  <td>{{ file.size }}</td>
                  <td>{{ file.file_type }}</td>
                  <td>{{ file.upload_datetime }}</td>
                  <td>
                    <form action="{{ download_file_url }}" method="post">
                    {% csrf_token %}
                    {{ form }}
                    <input type="hidden" name="path" value="{{ file.upload.name }}">
                    <input type="submit" class="btn btn-primary label-success" value="Download" />
                    </form>
                  </td>
                </tr>
            {% endfor %}
          </tbody>
        </table><hr>

views.py

def files_upload(request):
    context = {}

    if request.method == 'POST':
        uploaded_file = request.FILES['my_file']
        if uploaded_file.content_type not in file_content_types:
            print("INVALID CONTENT TYPE")

        else:
            new_file = File(upload=uploaded_file, file_type=uploaded_file.content_type)
            new_file.save()
            print(uploaded_file.content_type)

    qs = File.objects.all().order_by('-upload_datetime')
    context['files'] = qs

    context["file_types"] = file_content_types
    file_type_counts = []
    for file_type in file_content_types:
        count = File.objects.filter(file_type=file_type).count()
        file_type_counts.append(count)

    context["file_type_counts"] = file_type_counts

    return render(request, "files_ul_dl.html", context)


def download_view(request):
    if request.method == 'POST':
        path = request.POST.get('path')
        print(path)
        file_path = os.path.join(settings.MEDIA_ROOT, path)
        if os.path.exists(file_path):
            with open(file_path, 'rb') as fh:
                response = HttpResponse(fh.read(), content_type="application/force-download")
                response['Content-Disposition'] = 'inline; filename=' + os.path.basename(file_path)
                return response
    raise Http404