NoReverseMatch django类为基础 [英] NoReverseMatch django class based

问题描述

编辑。

抱歉，我很难过，感谢您的帮助，我该如何做？

模型

  created_by = models.ForeignKey（User）
 
 
 
 def get_absolute_url（self）：
 return reverse（'author_update'，kwargs = {'pk'：self.pk，'user_id'：self.created_by} ）
  

可能与错误相关使用基于django类的视图键入错误

我收到此错误

  NoReverseMatch at / author / add / 4 
使用参数'（）'和关键字arguments'{ }' 未找到。尝试1个模式：['author / add /（？P< user_id> \\d +）$'] 
  

urls.py

  url（r'^ author / add /（？P< user_id& \\ d +）$'，AuthorCreate.as_view（），name ='author_add'），
 url（r'^ author /（？P< user_id> \d +）/（？P< pk& ）$'，AuthorUpdate.as_view（），name ='author_update'），
 url（r'^ author /（？P< user_id> \d +）/（？P< pk> \d + delete / $'，AuthorDelete.as_view（），name ='author_delete'），
 url（r'^ author / list /（？P< user_id> \d +）$'，AuthorList.as_view name ='author_list'），
  

views.py for createview

  class AuthorCreate（LoginRequiredMixin，CreateView）：
 model =作者
 fields = ['firstName'，'lastName'，] 
 template_name ='authorCreate.html'
 success_url = reverse_lazy（'author_list'）
 
 def form_valid（self，form）：
 form.i nstance.created_by = self.request.user 
 return super（AuthorCreate，self）.form_valid（form）
 
 def get_context_data（self，** kwargs）：
 context = super （authorCreate，self）.get_context_data（** kwargs）
如果int（self.kwargs ['user_id']）！= self.request.user.id：
 raise PermissionDenied 
返回上下文
  

views.py for listview

  class AuthorList（LoginRequiredMixin，ListView）：
 template_name ='authorList.html'
 queryset = Author.objects.all（）
 
 def get_context_data （self，** kwargs）：
 context = super（AuthorList，self）.get_context_data（** kwargs）
 if int（self.kwargs ['user_id']）！= self.request.user .id：
 raise PermissionDenied 
 return context 
  

authorCreate.html

 < form method =post> {％csrf_token％} 
 {{form.as _p}} 
< input type =submitvalue =提交/> 
< / form> 
  

authorList.html

  {{request.user.username}} 
 
< ul> 
 {％object_list％}中的作者
< li> {{author.firstName}} 
< a href ={％urlauthor_updateauthor.id％}> ; {{author.firstName}}< / a> 
< a href ={％urlauthor_deleteauthor.id％}> delete< / a> 
< / li> 
 {％endfor％} 
< / ul> 
  

终端错误

 code>内部服务器错误：/ author / add / 4 
追溯（最近的最后一次呼叫）：
文件/ home / ronald / best / A2 / 0124 / local / lib / python2。 7 / site-packages / django / core / handlers / base.py，第114行，在get_response 
 response = wrapped_callback（request，* callback_args，** callback_kwargs）
文件/ home / ronald / best / A2 / 0124 / local / lib / python2.7 / site-packages / django / views / generic / base.py，第69行，视图
 return self.dispatch（request，* args，** kwargs）
文件/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/utils/decorators.py，第29行，_wrapper 
返回bound_func（* args，** kwargs）
文件/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py，行22，in _wrapped_view 
 return view_func（request，* args，** kwargs）
文件/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django /utils/decorators.py，lin e 25，in bound_func 
 return func（self，* args2，** kwargs2）
文件/home/ronald/best/A2/0124/vort/larb/views.py，第52行，在调度
返回超级（LoginRequiredMixin，self）.dispatch（request，* args，** kwargs）
文件/home/ronald/best/A2/0124/local/lib/python2.7/ 
返回处理程序（request，* args，** kwargs）
文件/ home / ronald / best / A2 /0124/local/lib/python2.7/site-packages/django/views/generic/edit.py，第205行，post 
 return super（BaseCreateView，self）.post（request，* args， ** kwargs）
文件/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/views/generic/edit.py，第171行，在帖子
 return self.form_valid（form）
文件/home/ronald/best/A2/0124/vort/larb/views.py，第82行，form_valid 
 return super（AuthorCreate， self）.form_valid（form）
文件/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/views/generic/ed it.py，第148行，form_valid 
返回超级（ModelFormMixin，self）.form_valid（form）
文件/home/ronald/best/A2/0124/local/lib/python2.7 /site/packages/django/views/generic/edit.py，第78行，form_valid 
 return HttpResponseRedirect（self.get_success_url（））
文件/ home / ronald / best / A2 / 0124 /local/lib/python2.7/site-packages/django/views/generic/edit.py，第132行，get_success_url 
如果self.success_url：
文件/ home / ronald / best /A2/0124/local/lib/python2.7/site-packages/django/utils/functional.py，第125行，__wrapper__ 
 res = func（* self .__ args，** self .__ kw） 
文件/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/core/urlresolvers.py，第509行，反向
 return iri_to_uri（ resolver._reverse_with_prefix（view，prefix，* args，** kwargs））
文件/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/core/urlresolvers .py，第429行，在_reverse_with_prefix 
（lookup_view_s，args，k wargs，len（pattern），patterns））
 NoReverseMatch：反向为'author_add'与参数'（）'和关键字参数'{}'未找到。尝试1个模式：['author / add /（？P< user_id> \\d +）$'] 
  

解决方案

问题是 success_url = reverse_lazy（'author_list'）将带你回到'author_list '成功后查看，但为了返回'author_list'，您需要为'user_id'字段提供一个参数，因为在您的urls.py中有：

  url（r'^ author / list /（？P< user_id> \d +）$'，AuthorList.as_view（），name ='author_list'），
  

修改：

success_url 字段并输入以下内容：

  class AuthorCreate（LoginRequiredMixin，创建视图）
 model =作者
 fields = ['firstName'，'lastName'，] 
 template_name ='authorCreate.html'
 
 def get_success_url（self） ：
 return reverse_lazy（'author_list'，kwarg s = {'user_id'：self.request.user.id}）
 
 def form_valid（self，form）：
 form.instance.created_by = self.request.user 
 return super（AuthorCreate，self）.form_valid（form）
 
 def get_context_data（self，** kwargs）：
 context = super（AuthorCreate，self）.get_context_data（** kwargs） 
如果int（self.kwargs ['user_id']）！= self.request.user.id：
 raise PermissionDenied 
 return context 
  / pre> 
edit.

sorry I'm having a hard time and thanks for your help how do I do that? 

model
   created_by = models.ForeignKey(User) 



   def get_absolute_url(self):
        return reverse('author_update', kwargs={'pk': self.pk, 'user_id': self.created_by})
Could be related to the error Type error with django class based view

I get this error 
NoReverseMatch at /author/add/4
Reverse for 'author_add' with arguments '()' and keyword arguments '{}' not found. 1 pattern(s) tried: ['author/add/(?P<user_id>\\d+)$']
urls.py
 url(r'^author/add/(?P<user_id>\d+)$', AuthorCreate.as_view(), name='author_add'),
 url(r'^author/(?P<user_id>\d+)/(?P<pk>\d+)$', AuthorUpdate.as_view(), name='author_update'),
 url(r'^author/(?P<user_id>\d+)/(?P<pk>\d+)/delete/$', AuthorDelete.as_view(), name='author_delete'),
 url(r'^author/list/(?P<user_id>\d+)$', AuthorList.as_view(), name='author_list'),
views.py for createview
class AuthorCreate(LoginRequiredMixin, CreateView):
    model = Author
    fields = [ 'firstName', 'lastName', ]
    template_name = 'authorCreate.html'
    success_url = reverse_lazy('author_list')

    def form_valid(self, form):
        form.instance.created_by = self.request.user
        return super(AuthorCreate, self).form_valid(form)

    def get_context_data(self, **kwargs):
        context = super(AuthorCreate, self).get_context_data(**kwargs)
        if int(self.kwargs['user_id']) != self.request.user.id:
            raise PermissionDenied
        return context
views.py for listview
class AuthorList(LoginRequiredMixin, ListView):
    template_name = 'authorList.html'
    queryset = Author.objects.all()

    def get_context_data(self, **kwargs):
        context = super(AuthorList, self).get_context_data(**kwargs)
        if int(self.kwargs['user_id']) != self.request.user.id:
            raise PermissionDenied
        return context
authorCreate.html
<form method="post">{% csrf_token %}
    {{ form.as_p }}
    <input type="submit" value="Submit" />
</form>
authorList.html
   {{ request.user.username}} 

    <ul>
        {% for author in object_list %}
            <li>{{ author.firstName }}
                 <a href="{% url "author_update" author.id %}">{{ author.firstName }}</a>
                 <a href="{% url "author_delete" author.id %}">delete</a>
            </li>
         {% endfor %}
    </ul>
terminal error
Internal Server Error: /author/add/4
Traceback (most recent call last):
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 114, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/views/generic/base.py", line 69, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/utils/decorators.py", line 29, in _wrapper
    return bound_func(*args, **kwargs)
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py", line 22, in _wrapped_view
    return view_func(request, *args, **kwargs)
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/utils/decorators.py", line 25, in bound_func
    return func(self, *args2, **kwargs2)
  File "/home/ronald/best/A2/0124/vort/larb/views.py", line 52, in dispatch
    return super(LoginRequiredMixin, self).dispatch(request, *args, **kwargs)
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/views/generic/base.py", line 87, in dispatch
    return handler(request, *args, **kwargs)
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/views/generic/edit.py", line 205, in post
    return super(BaseCreateView, self).post(request, *args, **kwargs)
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/views/generic/edit.py", line 171, in post
    return self.form_valid(form)
  File "/home/ronald/best/A2/0124/vort/larb/views.py", line 82, in form_valid
    return super(AuthorCreate, self).form_valid(form)
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/views/generic/edit.py", line 148, in form_valid
    return super(ModelFormMixin, self).form_valid(form)
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/views/generic/edit.py", line 78, in form_valid
    return HttpResponseRedirect(self.get_success_url())
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/views/generic/edit.py", line 132, in get_success_url
    if self.success_url:
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/utils/functional.py", line 125, in __wrapper__
    res = func(*self.__args, **self.__kw)
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 509, in reverse
    return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))
  File "/home/ronald/best/A2/0124/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 429, in _reverse_with_prefix
    (lookup_view_s, args, kwargs, len(patterns), patterns))
NoReverseMatch: Reverse for 'author_add' with arguments '()' and keyword arguments '{}' not found. 1 pattern(s) tried: ['author/add/(?P<user_id>\\d+)$']

解决方案
The problem is that success_url = reverse_lazy('author_list') will take you back to the 'author_list' view after success, but in order to go back to 'author_list', you need to provide an argument to the 'user_id' field because in your urls.py you have:
url(r'^author/list/(?P<user_id>\d+)$', AuthorList.as_view(), name='author_list'),
Edit:

remove the success_url field and input the following:
class AuthorCreate(LoginRequiredMixin, CreateView):
    model = Author
    fields = [ 'firstName', 'lastName', ]
    template_name = 'authorCreate.html'

    def get_success_url(self):
        return reverse_lazy('author_list', kwargs={'user_id': self.request.user.id})

    def form_valid(self, form):
        form.instance.created_by = self.request.user
        return super(AuthorCreate, self).form_valid(form)

    def get_context_data(self, **kwargs):
        context = super(AuthorCreate, self).get_context_data(**kwargs)
        if int(self.kwargs['user_id']) != self.request.user.id:
            raise PermissionDenied
        return context


                        
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