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所以基本任务是：使用仅链接到经过身份验证的用户的 dB 数据将模板名称和文本添加到choices带有ChoiceField小部件的表单中。是一个链接到用户的模型作为.SelectorTemplateForeignKey

我想通过作为类链接到连接视图的表单类访问请求数据（用户）django.views.generic.View。

我在这里检查了类似的问题： Curious about get_form_kwargs in FormView

在这里：从 Django 中基于类的通用视图将 request.user 对象发送到 ModelForm

在这里：Django: Accessing request in forms.py clean function

然而，他们不接触非FormView类的基础。由于它是相当古老的解决方案，我很好奇是否有更可能的方法可以request从forms.Form课堂上接触到。

这是我的代码：

视图.py

class InformFill(View):
form_class = InformForm
temlate_name = 'distrib_db/inform_fill.html'

def get(self, request):
    if request.user.is_authenticated():
        form = self.form_class(None)
        return render(request, self.temlate_name, context={'form': form})
    else:
        return redirect('distrib_db:login')

def post(self, request):
    if request.user.is_authenticated():
        form = self.form_class(request.POST)
        if form.is_valid():
            inform = Inform(flt_numbr=form.cleaned_data['flight_number'], date=form.cleaned_data['date'],
                            template=form.cleaned_data['text'], user=request.user)
            inform.save()
            date = form.cleaned_data['date']
            flt_numbr = form.cleaned_data['flight_number']
            try:
                emails, contacts = get_mail_cnt(date, flt_numbr)
                # inform = get_object_or_404(Inform, pk=request['pk'])
                paxdata = PaxData(inform=inform, emails=' '.join(emails), contacts=' '.join(contacts))
                paxdata.save()
                return redirect('/inform/{0}/'.format(inform.pk))
            # 'distrib_db:detail', context={'pk': inform.id}
            except Exception as e:
                return render(request, 'distrib_db/sample.html',
                              context={'date': date, 'flight_number': flt_numbr, 'error': e})

                # return render(request, 'distrib_db/sample.html', context={'date': date, 'flt_numbr': flt_numbr})

        return render(request, self.temlate_name, context={'form': form})
    else:
        return redirect('distrib_db:login')

表格.py

class InformForm(forms.Form):
flight_number = forms.CharField(5, widget=forms.TextInput())
date = forms.DateField(widget=forms.DateInput(attrs={'class': 'datepicker'}))
template = forms.ChoiceField(choices=templates, widget=forms.Select(attrs={'id': 'select_box',
                                                                          'onchange': 'javascript:changer();'}))
text = forms.CharField(widget=forms.Textarea(attrs={'id': 'txt_box', 'class': 'latin',
                                                    'maxlength': "160", 'onchange': 'javascript:validateTextArea();'}))

一般来说，我想像这样实现：

`class InformForm(forms.Form):
    def get_template_choices(self):
        templates = self.request.user.template_set.all()
        choices = []
        for t in templates: 
            choices.append((t.text, t.name))
        return choices

    flight_number = forms.CharField(5, widget=forms.TextInput())
    date = forms.DateField(widget=forms.DateInput(attrs={'class':                                                    
                                                      'datepicker'}))
    template = forms.ChoiceField(choices=get_template_choices(), 
                                         widget=forms.Select(attrs=
                                        {'id': 'select_box',

                                         'onchange': 'javascript:changer();'}))
    text = forms.CharField(widget=forms.Textarea(attrs={'id': 'txt_box', 
                                                    'class': 'latin',
                                                    'maxlength': "160", 
                              'onchange': 'javascript:validateTextArea();'}))`

我会很感激任何方法，我缺乏知识并问新手问题，对此感到抱歉。

我只是想获得python-way解决方案，而不是建立一些js/jinja绕行。

感谢您的时间！

#

在@Danielius 发表评论后，我做了一些调整：

`class InformForm(forms.Form):
    def __init__(self, user=None, *args, **kwargs):
        if user:
            self.fields['template'] = forms.ChoiceField(choices=tuple([(template.text, template.name) for template in user.template_set.all()]),
                                                        widget=forms.Select(attrs={'id': 'select_box', 'onchange': 'javascript:changer();'}))

    flight_number = forms.CharField(5, widget=forms.TextInput())
    date = forms.DateField(widget=forms.DateInput(attrs={'class': 'datepicker'}))
    # template = forms.ChoiceField(choices=templates, widget=forms.Select(attrs={'id': 'select_box',
    #                                                                           'onchange': 'javascript:changer();'}))
    text = forms.CharField(widget=forms.Textarea(attrs={'id': 'txt_box', 'class': 'latin',
                                                        'maxlength': "160", 'onchange': 'javascript:validateTextArea();'}))`

出错了AttributeError: 'InformForm' object has no attribute 'fields'

4

1 回答 1

1

您可以通过更改__init__方法将请求传递给您的表单，如下所示：

class InformForm(forms.Form):
...
   def __init__(self, user=None,*args, **kwargs):
        super(InformForm, self).__init__(**kwargs)
        if user:  
            self.fields['somefield'] = forms.ChoiceField()                  
            self.fields['somefield'].widget = forms.Select()
            self.fields['somefield'].queryset = Someobject.objects.filter(User=user)
...

如果用户通过外键链接到数据库中的其他对象，那么您将获得其他对象的所有值作为选择项。

此外，在创建表单时，您可以像这样传递用户：

form= InformForm(user=request.user,data=request.POST)
于 2017-05-13T10:51:56.387 回答