TypeError：__ init __（）只取1个参数（给定4个）

Question

mptt-urls加注：

  

/ activities / test /

中的TypeError      

__init__() takes exactly 1 argument (4 given)

这是我的网址格式：

url(r'^(?P<path>.*)/', mptt_urls.view(model='activities.models.Category',
                             view='activities.views.Category', slug_field='slug')),

我的观点：

class Category(TemplateView):
    template_name = 'activities/articles_list.html'

    def get_context_data(self, **kwargs):
        c = super(Category, self).get_context_data(**kwargs)
        c['articles'] = models.Article.objects.filter(Category=self)
        return c

我做错了什么？

回溯：

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/activities/test/

Django Version: 1.9.7
Python Version: 2.7.11
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'taggit',
 'mptt',
 'ckeditor',
 'easy_thumbnails',
 'activities',
 'common',
 'images']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']



Traceback:

File "/home/dukeimg/PycharmProjects/dorogi/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  149.                     response = self.process_exception_by_middleware(e, request)

File "/home/dukeimg/PycharmProjects/dorogi/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  147.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/home/dukeimg/PycharmProjects/dorogi/env/local/lib/python2.7/site-packages/mptt_urls/__init__.py" in __call__
  38.         return self.view(*args, **kwargs)

Exception Type: TypeError at /activities/test/
Exception Value: __init__() takes exactly 1 argument (4 given)

Answer 1

这可能对您有用：

def category(request, path, instance):
    l = get_list_or_404(models.Category.objects.all(), slug=path)

    return render(
        request,
        'activities/activity_list.html',
        {
            'articles': l,
            'activities': models.Category.objects.filter(level__lte=0)
        }
    )

Answer 2

我不知道你要做什么。

url(r'^(?P<path>.*)/', mptt_urls.view(model='activities.models.Category',
                             view='activities.views.Category', slug_field='slug')),

有两种方法可以呈现基于视图和函数的响应类视图。 但是您正在定义函数的URL，并且您正在使用基于类的视图，这就是您收到错误的原因。

如何解决此问题

1. 基于类的视图 更改网址

   url(r'^(?P<path>.*)/', Category.as_view(), slug_field='slug')),
   

   观点会是。

   class Category(TemplateView):
       template_name = 'activities/articles_list.html'
   
       def get_context_data(self, **kwargs):
           c = super(Category, self).get_context_data(**kwargs)
           c['articles'] = models.Article.objects.filter(Category=self)
           return c
   

2. 基于功能的视图 Urls.py

   url(r'^(?P<path>.*)/','activities.views.Category', slug_field='slug')),
   
   Views.py
   

   def类别（请求，路径）：     l = get_list_or_404（models.Category.objects.all（），slug = path）

   return render(
       request,
       'activities/activity_list.html',
       {
           'articles': l,
           'activities': models.Category.objects.filter(level__lte=0)
       }
   )
   

希望这有帮助。