如何在应用程序中使用反向 url 指向不同应用程序的模板？

Question

我有两个应用程序：simulation_api 和 building_data。每个都有模板和网址。我在主配置中导入的 url。

在我的 Simulation_api 模板中，我想设置一个链接到我的建筑数据详细视图。

这是我正在尝试的（在我的 simulation_api 模板中），它给我一个错误（django.urls.exceptions.NoReverseMatch）：

{% for item in simulations.project.buildinggroup_set.all %}
               <a href="{% url "detail_building_group" item.id %}">{{ item.description }}</a>
 {% endfor%}

for 循环有效，问题是我试图反转的 url。

我在我的 building_data 模型中像这样反转它：

class BuildingGroup(models.Model):
    name           = models.CharField(max_length=500, null=True, blank=True)
    project               = models.ForeignKey(Project, on_delete=models.CASCADE)


    def get_absolute_url(self):
        return reverse("detail_building_group", kwargs={"id" : self.id})

我认为问题在于我在一个应用程序中反转了 url，但在另一个应用程序的模板中无法识别它。但也许它也是别的东西......

有人有想法吗？提前非常感谢！非常感谢！

不确定它是否有用，但这里是我的简化模拟模型：

class Simulation(models.Model):
    project                 = models.ForeignKey(Project, on_delete=models.CASCADE)

我的 building_data 网址

app_name = 'buildings'
urlpatterns = [
    path('list/building-group/<int:id>/', DetailBuildingGroupView.as_view(), name="detail_building_group"),

]

我的回溯：

django.urls.exceptions.NoReverseMatch
django.urls.exceptions.NoReverseMatch: Reverse for 'detail_building_group' not found. 'detail_building_group' is not a valid view function or pattern name.

Traceback (most recent call last)
File "/usr/local/lib/python3.6/site-packages/django/contrib/staticfiles/handlers.py", line 66, in __call__
return self.application(environ, start_response)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/wsgi.py", line 146, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 81, in get_response
response = self._middleware_chain(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 95, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 95, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 95, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 95, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 95, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 95, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 95, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 95, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/app/analytics/middleware.py", line 22, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 95, in __call__
response = self.get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 37, in inner
response = response_for_exception(request, exc)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 87, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 122, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/usr/local/lib/python3.6/site-packages/django_extensions/management/technical_response.py", line 6, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/usr/local/lib/python3.6/site-packages/six.py", line 693, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 35, in inner
response = get_response(request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 158, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 156, in _get_response
response = response.render()
File "/usr/local/lib/python3.6/site-packages/django/template/response.py", line 106, in render
self.content = self.rendered_content
File "/usr/local/lib/python3.6/site-packages/django/template/response.py", line 83, in rendered_content
content = template.render(context, self._request)
File "/usr/local/lib/python3.6/site-packages/django/template/backends/django.py", line 61, in render
return self.template.render(context)
File "/usr/local/lib/python3.6/site-packages/django/template/base.py", line 175, in render
return self._render(context)
File "/usr/local/lib/python3.6/site-packages/django/test/utils.py", line 98, in instrumented_test_render
return self.nodelist.render(context)
File "/usr/local/lib/python3.6/site-packages/django/template/base.py", line 943, in render
bit = node.render_annotated(context)
File "/usr/local/lib/python3.6/site-packages/django/template/base.py", line 910, in render_annotated
return self.render(context)
File "/usr/local/lib/python3.6/site-packages/django/template/loader_tags.py", line 155, in render
return compiled_parent._render(context)
File "/usr/local/lib/python3.6/site-packages/django/test/utils.py", line 98, in instrumented_test_render
return self.nodelist.render(context)
File "/usr/local/lib/python3.6/site-packages/django/template/base.py", line 943, in render
bit = node.render_annotated(context)
File "/usr/local/lib/python3.6/site-packages/django/template/base.py", line 910, in render_annotated
return self.render(context)
File "/usr/local/lib/python3.6/site-packages/django/template/loader_tags.py", line 67, in render
result = block.nodelist.render(context)
File "/usr/local/lib/python3.6/site-packages/django/template/base.py", line 943, in render
bit = node.render_annotated(context)
File "/usr/local/lib/python3.6/site-packages/django/template/base.py", line 910, in render_annotated
return self.render(context)
File "/usr/local/lib/python3.6/site-packages/django/template/defaulttags.py", line 211, in render
nodelist.append(node.render_annotated(context))
File "/usr/local/lib/python3.6/site-packages/django/template/base.py", line 910, in render_annotated
return self.render(context)
File "/usr/local/lib/python3.6/site-packages/django/template/defaulttags.py", line 447, in render
url = reverse(view_name, args=args, kwargs=kwargs, current_app=current_app)
File "/usr/local/lib/python3.6/site-packages/django/urls/base.py", line 90, in reverse
return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))
File "/usr/local/lib/python3.6/site-packages/django/urls/resolvers.py", line 636, in _reverse_with_prefix
raise NoReverseMatch(msg)
django.urls.exceptions.NoReverseMatch: Reverse for 'detail_building_group' not found. 'detail_building_group' is not a valid view function or pattern name.

Answer 1

我解决了这个问题：

我在我的主配置中为我的网址添加了一个命名空间。

然后我像这样反转它：

    def get_absolute_url(self):
        return reverse("buildings:detail_building_group", kwargs={"id": self.id})

而buildings 是我的命名空间，detail_building_group 是我的网址名称。

我还必须将我的详细信息网址添加到我的其他应用程序的网址中，以便它识别网址。

感谢 JPG 引导我朝着正确的方向前进！

这也有帮助：http://cheng.logdown.com/posts/2016/01/06/django-how-to-reverse-urls-belonged-to-other-apps