python - 如何将用户对象传递给 Django 中的表单

Question

如何将用户对象或请求传递到我的表单以将其用作输入文本框的初始值？

例如，我有我的表格:

class ContactForm(forms.Form):
contact_name = forms.CharField(required=True, initial="???")
contact_email = forms.EmailField(required=True)
subjects = forms.ChoiceField(choices=emailsubjects)
content = forms.CharField(
    required=True,
    widget=forms.Textarea
)

def __init__(self, *args, **kwargs):
    self.request = kwargs.pop("request")
    super(ContactForm, self).__init__(*args, **kwargs)
    self.fields['contact_name'].label = "Your name:"
    self.fields['contact_email'].label = "Your email:"
    self.fields['content'].label = "What do you want to say?"
    self.fields['subjects'].label = "Please, select the subject of your message"

我希望我的 user.first_name 成为 contact_name 字段的默认值。

这是我的 views.py，我在其中调用表单:

def ContactsView(request):
form_class = ContactForm(request=request)
# new logic!
if request.method == 'POST':
    form = form_class(data=request.POST)

    if form.is_valid():
        contact_name = request.POST.get(
            'contact_name'
            , '')
        contact_email = request.POST.get(
            'contact_email'
            , '')
        form_content = request.POST.get('content', '')
        subjects = form.cleaned_data['subjects']
        subjects = dict(form.fields['subjects'].choices)[subjects]
        # Email the profile with the
        # contact information
        template = get_template('threeD/email/contact_template.txt')
        context = Context({
            'contact_name': contact_name,
            'subjects': subjects,
            'contact_email': contact_email,
            'form_content': form_content,
        })
        content = template.render(context)

        email = EmailMessage(
            "New message from " + contact_name,
            content,
            "Message - " + subjects + ' ',
            ['smart.3d.printing.facility@gmail.com'],
            headers={'Reply-To': contact_email}
        )
        email.send()
        messages.success(request, "Thank you for your message.")
        return redirect('/index/contacts/')


return render(request, 'threeD/contacts.html', {
    'form': form_class,
})

非常感谢任何帮助

Answer 1

您已更改表单以获取请求对象。因此，您可以在表单的方法中访问 self.request.user:

class ContactForm(forms.Form):
    ...
    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop("request")
        super(ContactForm, self).__init__(*args, **kwargs)
        self.fields['contact_name'].label = "Your name:"
        self.fields['contact_name'].initial = self.request.user.first_name

您还必须更新 View 以传递请求对象。请记住更新 GET 和 POST 请求的代码。

if request.method == 'POST':
    form = ContactForm(data=request.POST, request=request)
    ...
else:
    # GET request
    form = ContactForm(request=request)

最后，通过将请求传递给表单，您已将它与 View 紧密耦合。将 user 传递给表单可能会更好。这将使单独测试表单和 View 变得更容易。如果您更改表单，请记住也要更新 View 。