Question

我只想从模板中调用一个视图函数，我已经看到我必须使用反向函数来完成它。我想将一个参数传递给view函数，但我不想在url中显示它。可能吗？这是我的代码和错误：

urls.py

url(r'^perfil/deleteDownloadedTrack/$','principal.views.delete_downloaded_track', name='delete_downloaded_track'),

views.py

def delete_downloaded_track(request, track):    
    ...
    return HttpResponseRedirect(reverse('profile_detail'))

template.html

{% for track in downloadedTracks %}
    <tr> 
        <td>
            {{track.name}} 
        </td>
        <td> 
            <div class="botoForm" onclick="location.href='{% url "principal.views.delete_downloaded_track" track %}'"> Eliminar </div>
        </td>
{% endfor %}

和错误：

Reverse for 'principal.views.delete_downloaded_track' with arguments '(<DownloadedTrack: DownloadedTrack object>,)' and keyword arguments '{}' not found.

谢谢！

Answer 1

HTML标准推荐的处理任何更改服务器数据的请求的方法是使用POST请求。

{% for track in downloadedTracks %}
    <tr> 
        <td>
            {{track.name}} 
        </td>
        <td> 
            <form method="POST" action="{% url principal.views.delete_downloaded_track %}" id="delete-form-{{ track.id }}">
                {% csrf_token %}
                <input type="hidden" name="track_id" value="{{ track.id }}" />
                <div class="botoForm" onclick="document.getElementById('delete-form-{{ track.id }}').submit()"> Eliminar </div>
            </form>
        </td>
{% endfor %}

{% csrf_token %}通过验证您发送此表单的人也是通过POST请求发送回来的人来阻止跨站点伪造请求。只需使用以下方法检索视图中的ID：

if request.method == 'POST':
    id = request.POST.get("track_id", None)
    track = Track.objects.get(id=id)

通过POST发送的数据不会显示在网址中。

Answer 2

如果您不希望在URL中显示该参数，那么您可能希望将其作为查询参数传递，例如

<host_and_path>/perfil/deleteDownloadedTrack/?track_id=<some_track_id>。

所以你的观点看起来像这样：

def delete_downloaded_track(request):
    track_id = request.GET.get('track_id')
    # get track based on track_id and delete it.

和你的模板一样（假设你在模板上下文中将delete_downloaded_track反向传递为delete_url）：

{% for track in downloadedTracks %}

    <!-- template code -->

    {% with delete_url|add:"?track_id="|add:track.id as url_with_id %}
        <a href="{{url_with_id|safe}}">Delete</a>
    {% endwith %}

{% endfor %}

django反向找不到

2 个答案: