Question

删除对象并传递一些成功消息后，如何重定向到同一视图？

HTML：

<form action="{% url 'lamp-delete' lamp.id %}" method="post" style="display: inline;">
                        {% csrf_token %}
                        <input type="hidden" name="product_id" value="{{ lamp.id }}" />
                        <button type="submit" class="btn btn-outline-danger btn-sm">
                            <i class="fa fa-trash" aria-hidden="true"></i>
                        </button>
                    </form>

views.py

 def index(request):
    lamps = Lamp.objects.all()
    return render(request, 'index.html', {'lamps': lamps})


def productlist(request, categ):
    MEDIA_URL = settings.MEDIA_URL
    lamps = Lamp.objects.filter(category=categ)
    return render(request, 'productlist.html', {'lamps': lamps, 'MEDIA_URL': MEDIA_URL})


class LampDelete(DeleteView):
    model = Lamp
    success_url = reverse_lazy('index')

urls.py

urlpatterns =[
    url(r'^$', views.index, name='index'),
    url(r'^productlist/([a-z0-9]+)/$', views.productlist, name='productlist'),
    url(r'^accounts/', include('allauth.urls')),
    url(r'productlist/(?P<pk>[0-9]+)/delete/$', views.LampDelete.as_view(), name='lamp-delete'),
]

我正在使用django.views.generic.edit，现在使用reverse_lazy成功删除项目后，我可以重定向到静态页面，但我正在尝试重载现有模型并将带有字符串的变量传递给此视图'productlist ”。如果有人可以提供一个例子，我会非常感激。

Answer 1

Classy Class Based Views是基于类的视图的良好资源。查看https://ccbv.co.uk/projects/Django/1.10/django.views.generic.edit/DeleteView/，您可以看到有.get_success_url()方法，在那里您还可以访问self.request以传递某种变量。

然而，对于简单的成功消息，我会看一下Django的messages framework

from django.contrib import messages


class LampDelete(DeleteView):
    model = Lamp
    success_url = reverse_lazy('index')

    def delete(self, request, *args, **kwargs):
        obj = self.get_object()
        messages.success(request, '{} was deleted'.format(obj.name))
        return super(LampDelete, self).delete(request, *args, **kwargs)

然后在你的模板中：

{% if messages %}
<ul class="messages">
    {% for message in messages %}
    <li{% if message.tags %} class="{{ message.tags }}"{% endif %}>{{ message }}</li>
    {% endfor %}
</ul>
{% endif %}

（这只是Django文档中逐字逐句的例子。）

更新后重定向到同一视图，在Django中删除

1 个答案: