表单中没有邮件默认值

Question

我正在使用一个表单 django，我想要在我的模型中已经定义的值。但是邮件的默认值没有显示在表单中。为什么？

forms.py

class ForeningForm(ModelForm):

    class Meta:
        model = Forening
        exclude = ['ordf','kass','adress']
        fields=['fname','fphone','mail','homepage','direktansk','anslutenannat',\
                'anteckningar','uppdaterad']

模型.py：

class Forening(Model):
    
    fname=CharField(default='missing',max_length=100)
    ordf=OneToOneField(Person,on_delete=CASCADE,related_name='ordf')
    kass=OneToOneField(Person,on_delete=CASCADE,related_name='ka')
    fphone=PhoneField(default='9999999999')
    adress=OneToOneField(Adress,on_delete=CASCADE,related_name='ad')
    mail=EmailField(default='missing@gmail.com')
    homepage=TextField(max_length=400,default='www.homepage.com')
    direktansk=BooleanField(default=False)
    anslutenannat=BooleanField(default=False)
    anteckningar=TextField(max_length=500,default='missing')
    uppdaterad=DateTimeField(default=timezone.now)

    def __str__(self):
        return 'förening: ' + self.fname

    class Meta:
        ordering=('fname','ordf')

views.py：

class Fcreate(CreateView):

    form_class=ForeningForm
    template_name='kammem/create.html'

    def form_valid(self,form)

        fname=form.cleaned_data['fname']
        venue=form.cleaned_data['venue']
        fphone=form.cleaned_data['fphone']
        mail=form.cleaned_data['mail']
        homepage=form.cleaned_data['homepage']
        direktansk=form.cleaned_data['direktansk']
        anslutenannat=form.cleaned_data['anslutenannat']
        antekningar=form.cleaned_data['antekningar']
        uppdaterad=form.cleaned_data['uppdaterad']

Answer 1

不显示默认值，因为模型不需要字段值（因为它具有默认值，即使用户没有填写此字段也不会设置为空白）。对于您的问题，最简单的解决方案可能是覆盖 get_form 方法，使用 initial 值作为添加到表单实例化调用的字段：

class Fcreate(CreateView):

form_class=ForeningForm
template_name='kammem/create.html'

...

    def get_form(self, form_class=None):
        if form_class is None:
            form_class = self.get_form_class()
        form_kwargs = self.get_form_kwargs()
        form_kwargs.update(
            {'initial' : {'email': 'missing@gmail.com'}}
        )
        form = form_class(**form_kwargs)
        return form