django 删除帖子 noReverseMatch

Question

试图删除帖子，但不知何故得到了 NoReverseMatch

views.py

@login_required
def task_detail(request, slug):
    '''
    Detailed view of all tasks on given project
    '''
    context = {}
    checklist   = get_object_or_404(Checklist, slug=slug)
    context.update({'checklist':checklist})
    form        = NotesForm(request.POST or None)
    if request.method == "POST":
        if form.is_valid():
            print("\n\n for is valid")
            author = Profile.objects.get(user=request.user) 
            new_note = form.save(commit=False)
            new_note.user = author
            new_note.checklist = checklist
            new_note.save()

            return redirect('task_detail', slug=slug)

    context.update({
        'form': form,
        'title': checklist,
    })

    return render(request, 'projects/checklist.html', context)

@login_required
def delete_notes(request, note_id = None):
    del_note = Note.objects.get(id = note_id)
    del_note.delete()

    return redirect('teams')

我的 urls.py

urlpatterns = [
    path('projects/', teams, name='teams'),
    path('projects/project/<slug>/', projects, name='projects'),
    path('projects/tasks/<slug>/', project_detail, name='project_detail'),
    path('projects/checklist/<slug>/', task_detail, name='task_detail'),
    path('projects/checklist/delete_notes/', delete_notes, name='delete_notes'),
]

在 html 中我只有一个带有要删除的 url 的 href

<a class="dropdown-item text-danger" href="{% url 'delete_notes' notes.id %}">Delete</a>

得到;未找到带有参数“(14,)”的“delete_notes”的反向操作。尝试了 1 种模式：['projects/checklist/delete_notes/\Z']

不太确定缺少什么，认为清单中的 slug 已经通过了吗？

重定向更新

urlpatterns = [
    path('projects/', teams, name='teams'),
    path('projects/project/<slug>/', projects, name='projects'),
    path('projects/tasks/<slug>/', project_detail, name='project_detail'),
    path('projects/checklist/<slug>/', task_detail, name='task_detail'),
    path('projects/checklist/delete_notes/<int:note_id>/<slug:slug>/', delete_notes, name='delete_notes'),

@login_required
@require_http_methods(['post', 'delete'])
def delete_notes(request, note_id, slug):
    '''
    Delete given note
    '''
    del_note = Note.objects.filter(id=note_id).delete()
    return redirect('task_detail', slug=slug)

用蛞蝓更新

在html中

<form method="POST" action="{% url 'delete_notes' notes.id title.slug %}">
     {% csrf_token %}
     <a class="dropdown-item">
        <button type="submit"class="btn btn-danger">Delete</button>
     </a>
</form>

Answer 1

您应该指定一个参数来放置notes.id 参数，例如：

path('projects/checklist/delete_notes/<strong>&lt;int:note_id&gt;</strong>/', delete_notes, name='delete_notes'),

然而，此类视图只能由 POST 或 DELETE 请求触发，而不应由 GET 请求触发：GET 请求只能用于检索数据，而不是更改实体。

因此，您可以通过以下方式保护视图：

from django.views.decorators.http import require_http_methods

@login_required
@require_http_methods(['POST', 'DELETE'])
def delete_notes(request, note_id):
    Note.objects.filter(id=note_id).delete()
    return redirect('teams')

在模板中你应该使用“迷你表单”：

<form method="post" action="{% url 'delete_notes' notes.id %}">
    {% csrf_token %}
    <button type="submit">Delete</button>
</form>

如果你想重定向到给定任务的task_detail，你可以添加一个额外的参数：

path('projects/checklist/delete_notes/<strong>&lt;int:note_id&gt;</strong>/<strong>&lt;slug:slug&gt;</strong>/', delete_notes, name='delete_notes'),

并通过以下方式重定向：

from django.views.decorators.http import require_http_methods

@login_required
@require_http_methods(['POST', 'DELETE'])
def delete_notes(request, note_id, slug):
    Note.objects.filter(id=note_id).delete()
    return redirect('task_detail', slug=slug)

那么你应该在表单中传递任务的slug：

<form method="post" action="{% url 'delete_notes' notes.id task.slug %}">
    {% csrf_token %}
    <button type="submit">Delete</button>
</form>