通用详细信息视图UserProfileDetailView必须使用URLconf中的对象pk或slug调用 [英] Generic detail view UserProfileDetailView must be called with either an object pk or a slug in the URLconf
问题描述
好吧,我面临错误,现在这个问题已经过去了两天,仍然停留在这个错误上,任何人都可以帮助并且能够解决这个问题。我是Django的新手,需要帮助。我会很感激的。如果有其他事情需要答案而不是告诉我,我将用详细信息更新我的问题。.
models.py
Well I am facing error and it's now its been two days to this question and still stuck on this mistake, anybody can help and able to fix this. I am new in Django and need help. I shall be thankful. If any thing else requires for answers than tell me I will update my questions with that detail.. models.py
class UserProfile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
follower = models.ManyToManyField(User, related_name ='is_following',blank=True)
avatar = models.ImageField(("Avatar"), upload_to='displays', default = '1.jpg',height_field=None, width_field=None, max_length=None,blank = True)
create_date = models.DateField(auto_now_add=True,null=True)
def __str__(self):
return f'{self.user.username}'
views.py
class UserProfileDetailView(DetailView):
model = UserProfile
template_name = "profiles/userprofile_detail.html"
def get_context_data(self,*args, **kwargs):
context = super().get_context_data(*args,**kwargs)
is_following = False
if self.object.user in self.request.user.userprofile.follower.all():
is_following = True
context["is_following"] = is_following
return context
urls.py
urlpatterns = [
# path('user',UserProfileCreateView.as_view(template_name = 'profiles/userprofile.html'),name='home')
# path('user/',userprofile,name = 'home'),
path('user-profile/',UserProfileFollowToggle.as_view(),name = 'toggle'),
path('<str:username>/',UserProfileDetailView.as_view(),name = 'detail'),
]
userprofile_detail.html
userprofile_detail.html
{% extends 'base.html' %}
{% block content %}
<p style="text-align: center;"><img src="{{ object.user.userprofile.avatar.url }}" width = "50%"></p>
{{ request.user.userprofile.follower.all }}<br>
{{object.user.userprofile }}
{% if object.user in request.user.userprofile.follower.all %}
Following
{% endif %}
<p>{% include 'profiles/snippets/follow_toggle.html' with username=user.username is_following=is_following %}</p>
<h2>{{ object.username }}</h2>
/{{is_following}}
{% endblock content %}
snippets / follow_toggle.html
snippets/follow_toggle.html
<form class='form' method='POST' action="{% url 'profiles:toggle'%}">
{% csrf_token %}
<input type='hidden' name='username' value="{% if username %}{{ username }}{% else %}hello{% endif %}">
<button class='btn {% if is_following %}btn-warning{% else %}btn-primary{% endif %}'>{% if is_following %}Unfollow {% else %}Follow{% endif %}</button>
</form>
错误回溯:
Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/profiles/testuser/
Django Version: 3.0.3
Python Version: 3.8.3
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'bootstrap3',
'accounts',
'posts',
'profiles']
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.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback (most recent call last):
File "C:\Users\AHMED\anaconda3\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
File "C:\Users\AHMED\anaconda3\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Users\AHMED\anaconda3\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\AHMED\anaconda3\lib\site-packages\django\views\generic\base.py", line 71, in view
return self.dispatch(request, *args, **kwargs)
File "C:\Users\AHMED\anaconda3\lib\site-packages\django\views\generic\base.py", line 97, in dispatch
return handler(request, *args, **kwargs)
File "C:\Users\AHMED\anaconda3\lib\site-packages\django\views\generic\detail.py", line 106, in get
self.object = self.get_object()
File "C:\Users\AHMED\anaconda3\lib\site-packages\django\views\generic\detail.py", line 45, in get_object
raise AttributeError(
Exception Type: AttributeError at /profiles/testuser/
Exception Value: Generic detail view UserProfileDetailView must be called with either an object pk or a slug in the URLconf.
推荐答案
问题
- 使用
-
str
类型代替urls.py $中的 -
UserProfileDetailView
没有指定自定义slug_url_kwarg
和slug_field
-
UserProfileDetailView
指定UserProfile
模型,但UserProfile
模型没有属性或方法用户名
,位于用户表中。
slug
类型b $ b str
type used instead ofslug
type in urls.pyUserProfileDetailView
doesn't specify your customslug_url_kwarg
andslug_field
UserProfileDetailView
specifiesUserProfile
model butUserProfile
model doesn't have attribute or methodusername
, which is on `User table.
解决方案
阅读Django的DetailView代码,您将发现以下内容对于使代码正常工作是必要的。
Solution
Reading Django's DetailView code, you'll find that the following is necessary to get your code working properly.
views.py
class UserProfileDetailView(DetailView):
slug_url_kwarg = "username"
slug_field = "username"
更新UserProfile模型或更新UserProfileDetailView.get_slug_field
UserProfile是为UserProfileDetailView和
get_slug_field 方法定义的查找表,该方法在UserProfileDetailView上读取
slug_field 属性不支持点语法方法遍历(即:
user.username`)。
因此,要么:
Update UserProfile model OR Update UserProfileDetailView.get_slug_field
UserProfile is the lookup table defined for UserProfileDetailView and
get_slug_fieldmethod, which reads
slug_fieldproperty on the UserProfileDetailView doesn't support dot syntax method traversal (ie:
user.username`).
Thus either:
- UserProfile模型必须引用
用户名
或; -
get_slug_field
必须显式定义子域或; -
get_slug_field
必须为点语法方法遍历添加功能
- UserProfile model must have reference to
username
or; get_slug_field
must explicitly define slug field or;get_slug_field
must add functionality for dot syntax method traversal
models.py
models.py
class UserProfile(models.model):
...
@property
def username(self):
self.user.username
OR
class UserProfileDetailView(DetailView):
...
def get_slug_field(self):
self.user.username
在urls.py中更新用户名类型。
有用,但不是必需的。
Update username type in urls.py
Helpful, but not necessary.
urls.py
path('<slug:username>/', UserProfileDetailView.as_view(), name = 'detail'),
参考
Django Detail View get_slug_field
(Github): https://github.com/django/django/blob /master/django/views/generic/detail.py#L78-L80
References
Django Detail View get_slug_field
(Github): https://github.com/django/django/blob/master/django/views/generic/detail.py#L78-L80
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