Django我怎么能通过请求.用户（当前登录用户）在窗体中使用基于类的视图时？

class CustomForm(forms.Form): username = forms.CharField(initial='testname',max_length=150) email = forms.EmailField() phone_number = forms.CharField(max_length=15) position = forms.CharField(max_length=15) uperall = forms.ModelMultipleChoiceField(queryset=None) def __init__(self, *args, **kwargs): user = kwargs.pop('user', None) super(CustomForm, self).__init__(*args, **kwargs) self.fields['uperall'].queryset = User.objects.filter(username=user.username)

def ftestview(request): if request.method == 'POST': form = CustomForm(request.POST, user=request.user) if form.is_valid(): username = form.cleaned_data['username'] email = form.cleaned_data['email'] phone_number = form.cleaned_data['phone_number'] position = form.cleaned_data['position'] with transaction.atomic(): user = User.objects.create(username=username,email=email) userinfo = UserInfo.objects.create(user=user,phone=phone_number,position=position) userinfo.save() user.save() return HttpResponseRedirect('/success') else: form = CustomForm(user=request.user) return render(request, 'manager/alltoall.html', { 'form': form })

class TestView(FormView): form_class = CustomForm template_name = 'manager/alltoall.html' def get_form_kwargs(self): user = self.request.user form_kwargs = super(TestView, self).get_form_kwargs() form_kwargs.update({'initial': {'uperall': User.objects.filter(username=user.username)}}) return form_kwargs def form_valid(self, form): username = form.cleaned_data['username'] email = form.cleaned_data['email'] phone_number = form.cleaned_data['phone_number'] position = form.cleaned_data['position'] with transaction.atomic(): user = User.objects.create(username=username,email=email) userinfo = UserInfo.objects.create(user=user,phone=phone_number,position=position) userinfo.save() user.save() return super(TestView, self).form_valid(form)

Environment: Request Method: GET Request URL: http://127.0.0.1:8000/manager/test/ Django Version: 1.10.1 Python Version: 3.4.3 Installed Applications: ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'manager.apps.ManagerConfig', 'mptt'] 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'] Template error: In template C:\Users\Jaemyun\django_real\apa\apa\manager\templates\manager\alltoall.html, error at line 9 'NoneType' object has no attribute 'all' 1 : <select multiple="multiple" data-field-name="groups"> 2 : <option value="volvo">Volvo</option> 3 : <option value="hyundai">Hyundai</option> 4 : </select> 5 : 6 : <form action="." method="post"> 7 : {% csrf_token %} 8 : <table> 9 : {{ form }} 10 : </table> 11 : <input type="submit" value="Submit" /> 12 : </form> Traceback: File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\core\handlers\exception.py" in inner 39. response = get_response(request) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\core\handlers\base.py" in _get_response 217. response = self.process_exception_by_middleware(e, request) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\core\handlers\base.py" in _get_response 215. response = response.render() File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\template\response.py" in render 109. self.content = self.rendered_content File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\template\response.py" in rendered_content 86. content = template.render(context, self._request) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\template\backends\django.py" in render 66. return self.template.render(context) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\template\base.py" in render 208. return self._render(context) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\template\base.py" in _render 199. return self.nodelist.render(context) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\template\base.py" in render 994. bit = node.render_annotated(context) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\template\base.py" in render_annotated 961. return self.render(context) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\template\base.py" in render 1050. return render_value_in_context(output, context) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\template\base.py" in render_value_in_context 1028. value = force_text(value) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\utils\encoding.py" in force_text 76. s = six.text_type(s) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\utils\html.py" in <lambda> 391. klass.__str__ = lambda self: mark_safe(klass_str(self)) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\forms\forms.py" in __str__ 123. return self.as_table() File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\forms\forms.py" in as_table 271. errors_on_separate_row=False) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\forms\forms.py" in _html_output 226. 'field': six.text_type(bf), File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\utils\html.py" in <lambda> 391. klass.__str__ = lambda self: mark_safe(klass_str(self)) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\forms\boundfield.py" in __str__ 43. return self.as_widget() File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\forms\boundfield.py" in as_widget 101. return force_text(widget.render(name, self.value(), attrs=attrs)) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\forms\widgets.py" in render 610. options = self.render_options(value) File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\forms\widgets.py" in render_options 560. for option_value, option_label in self.choices: File "C:\Users\Jaemyun\django_real\apa\myenv\lib\site-packages\django\forms\models.py" in __iter__ 1114. queryset = self.queryset.all() Exception Type: AttributeError at /manager/test/ Exception Value: 'NoneType' object has no attribute 'all'

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1楼 · 发布于 2024-10-01 15:43:40

您可以重写来自FormView类视图的方法get_form_kwargs，以便为表单设置初始数据。在

class YouFormView(FormView):
    teplate_name = 'your template'
    form_class = YourForm


    def get_form_kwargs(self):
        user = self.request.user
        form_kwargs = super(YouFormView, self).get_form_kwargs()
        form_kwargs.update({
            'initial': {
                'uperall': User.objects.filter(username=user.username)
            }
        })
        return form_kwargs

关于混合视图：我建议坚持使用基于类的视图。在

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