我如何 update/delete Django 中的内容？

Question

所以我在 Django 中有一个表单可以让用户写他们的日记。
现在我想添加编辑按钮和删除按钮，但我遇到了错误。所以这是代码。
模板（detail.html）

...
<form method='post' class="form-group">
    {% csrf_token %}
    <div class="row justify-content-center">
        <a href="{% url 'delete' authuser_id slug %}">
            <button class='btn btn-primary button-delete'>Delete</button>
        </a>
    </div>
</form>

urls.py

...
urlpatterns = [
...
    path('detail/<int:authuser_id>/<slug:slug>', views.detail, name='detail'),
    path('detail/<int:authuser_id>/<slug:slug>', views.delete, name='delete'),
]

views.py

from .models import DiaryInput
...

def detail(request, authuser_id, slug):
    todayDiary = DiaryInput.objects.get(slug=slug)
    return render(request, '/detail.html', {'todayDiary' : todayDiary})

def delete(request, authuser_id, slug):
    todayDiary = DiaryInput.objects.get(slug=slug)
    todayDiary.delete()
    return redirect('/')

当我转到特定日记的详细信息页面时，我收到一条错误消息：

对 'delete' 进行反转，未找到参数“(”,)'。尝试了 1 种模式：['detail/detail/(?P[0-9]+)/(?P[-a-zA-Z0-9_]+)/delete$']

我认为我的模板在 {% url %} 标记中有问题，但我看不出我做错了什么。感谢您的帮助:)

Answer 1

views.py

def add(request):
    if request.method == 'POST':
        form = EditEntryForm(data=request.POST)
        if form.is_valid():
            form.save()
            return redirect('home')             
    else:
        form = AddEntryForm()
    return render(request, '/add.html', {'form':form})

def update(request, id):
    entry = get_object_or_404(Entry, id=id)
    if request.method == 'POST':
        form = EditEntryForm(data=request.POST, instance=entry)
        if form.is_valid():
            form.save()
            return redirect('home')             
    else:
        form = EditEntryForm(instance=entry)
    return render(request, '/edit.html', {'form':form})

def delete(request, id, slug):
    Entry.objects.filter(id=id, slug=slug).delete()
    return redirect('home')

urls.py

path('add_entry/', views.add, name='add'),
path('update/<int:id>/', views.update, name='update'),    
path('delete/<int:id>/<slug:slug>/', views.delete, name='delete'),

<a href="{% url 'detail' todayDiary.authuser_id todayDiary.slug %}">{{ entry.title }}</a>
<a href="{% url 'update' todayDiary.authuser_id %}">Update</a>
<a href="{% url 'delete' todayDiary.authuser_id todayDiary.slug %}">Delete</a>

并将模板中的表单呈现为 {{ form.as_p }} 并且最好将路径分开以获取详细信息并删除，不要混淆它。希望这有帮助。

Answer 2

您为 url detail 和 delete 指定了相同的路径，因此请更改：

 path('detail/<int:authuser_id>/<slug:slug>', views.detail, name='detail'),
 path('delete/<int:authuser_id>/<slug:slug>', views.delete, name='delete'),

现在在模板中

 <a href="{% url 'delete' todayDiary.id todayDiary.slug %}">

我如何 update/delete Django 中的内容？

how do I update/delete a content in Django?

django

crud