django-配置文件和非类型用户

Question

我被难住了！

我正在构建一个表单，允许用户填写个人资料字段和用户字段在同一时间。网络上到处都有这样的例子，这个网站上有一个数字(例如How to create a UserProfile form in Django with first_name, last_name modifications?)

然而，尽管我可能会尝试，我仍然在我的form.py中得到一个none类型的用户

一些代码: forms.py

class ProfileForm(ModelForm):
first_name = forms.CharField(label="First name")
last_name = forms.CharField(label="Last name")

def __init__(self, *args, **kwargs):
    super(ProfileForm, self).__init__(*args, **kwargs)
    print self.instance #profile does not exist here 
    self.fields['first_name'].initial = self.instance.user.first_name
    self.fields['last_name'].initial = self.instance.last_name

def save(self, *args, **kwargs):
    super(ProfileForm, self).save(*args, **kwargs)
    self.instance.user.first_name = self.cleaned_data.get('first_name')    
    self.instance.user.last_name = self.cleaned_data.get('last_name')
    self.instance.user.save()

class Meta:
    model = UserProfile
    exclude = ('user')

urls.py

    url(r'^profiles/edit/', 'profiles.views.edit_profile', {'form_class': ProfileForm}, name='edit_profile' ),

template.html

    <div class="clearfix">
    <legend>Edit your profile details</legend>
</div>
{% include 'profiles/profile_form.html' with user=user %}

视图来自django-profile，但我甚至尝试过拉入一个应用程序，看到我的用户存在，并被拉入视图中的一个实例中，该实例在表单中缺少用户！

其他值得注意的事情:我正在使用电子邮件作为我的身份验证方法，而不是用户名，但仍然有一个基于文本的随机用户名(因为我知道在django-profile中作为用户名的电子邮件有问题)。这还会是我的问题吗？

如果有帮助，下面是我的身份验证定义：

    def authenticate(self, username=None, password=None):
    """ Authenticate a user based on email address as the user name. """
    try:
        user = User.objects.get(email=username)
        if user.check_password(password):
            return user
    except User.DoesNotExist:
        return None 

def get_user(self, user_id):
    """ Get a User object from the user_id. """
    try:
        return User.objects.get(pk=user_id)
    except User.DoesNotExist:
        return None

这是一个自定义后端的引用，我已经确认它是有效的。

我希望有人有一些见解！

编辑：

我的例外是：

Exception Type: TemplateSyntaxError
Exception Value: Caught AttributeError while rendering: 'NoneType' object has no attribute 'first_name'
Exception Location:/Users/willcadell/placespeak/webapps/place/../place/accounts/forms.py in __init__, line 13

视图(来自django-profiles)：

def edit_profile(request, form_class=None, success_url=None,
             template_name='profiles/edit_profile.html',
             extra_context=None):

    try:

        profile_obj = request.user.get_profile()
        print profile_obj #profile is good here
    except ObjectDoesNotExist:
        return HttpResponseRedirect(reverse('profiles_create_profile'))

    if success_url is None:
        success_url = reverse('profiles_profile_detail', kwargs={ 'username': request.user.username })
    if form_class is None:
        form_class = utils.get_profile_form()      
    if request.method == 'POST':
        form = form_class(data=request.POST, files=request.FILES, instance=profile_obj)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect(success_url)
    else:
        form = form_class(instance=profile_obj)

    if extra_context is None:
        extra_context = {}

    context = RequestContext(request)

    for key, value in extra_context.items():
        context[key] = callable(value) and value() or value

    return render_to_response(template_name,
                          { 'form': form,
                          'profile': profile_obj,},
                          context_instance=context)

我还添加了两个注释，指出配置文件存在的位置和不存在的位置，即它在视图中显示为profile_obj，但在表单中不显示为self.instance。

另一个(可能不相关的)症状是，对于这个异常页面，django工具栏没有显示出来...太奇怪了！

Answer 1

这就是我最终要做的：

view.py：

def edit_profile(request):

profile_obj = request.user.get_profile()
print dir(profile_obj.profileasset_set)
asset_obj = profile_obj.
user_obj = request.user

if request.method == 'POST':
    form = ProfileForm(request.POST, )
    if form.is_valid():

        profile_obj.twitter = form.cleaned_data['twitter']
        profile_obj.about = form.cleaned_data['about']
        profile_obj.url = form.cleaned_data['url']
        profile_obj.save()

        profile


        user_obj.first_name = form.cleaned_data['first_name']
        user_obj.last_name = form.cleaned_data['last_name']
        user_obj.save()

        form.save()
        return HttpResponseRedirect('/profiles/profile')

else:
    form = ProfileForm(instance=user_obj, 
        initial={
                 'first_name':user_obj.first_name,
                 'last_name':user_obj.last_name,
                 'twitter':profile_obj.twitter,
                 'url':profile_obj.url,
                 'about':profile_obj.about,
                }
        )

template = 'profiles/edit_profile.html'
data = {'form': form, }      
return render_to_response(template, data, context_instance=RequestContext(request))

forms.py：

class ProfileForm(ModelForm):

first_name = forms.CharField(label="First name")
last_name = forms.CharField(label="Last name")
twitter = forms.CharField(label="Twitter")
about = forms.CharField(label="About", widget=forms.Textarea)
url = forms.CharField(label="URL")

class Meta:
    model = UserProfile
    fields = ('url', 'twitter', 'about')

希望这对某些人有帮助！

Answer 2

您可能并不总是有一个实例，这可能是它显示为None的原因。试着做

def __init__(self, *args, **kwargs):
    super(UserProfileForm, self).__init__(*args, **kwargs)
    if kwargs.has_key('instance'):
        instance = kwargs['instance']
        self.initial['first_name'] = instance.first_name
        self.initial['last_name'] = instance.last_name

另外，您使用的是来自user对象的first_name，而是来自user_profile对象的last_name！我只会保持一致。我使用下面的代码使它们在这两个位置都可用

   # first_name - stores in auth.User
    def _get_first_name(self):
        return self.user.first_name
    def _set_first_name(self, name):
        self.user.first_name = name
    first_name = property(_get_first_name, _set_first_name)

    # last_name - stores in auth.User
    def _get_last_name(self):
        return self.user.last_name
    def _set_last_name(self, name):
        self.user.last_name = name
    last_name = property(_get_last_name, _set_last_name)