以django模型形式设置初始值

Question

我想以模型形式设置初始数据，我该怎么做？

我一直在寻找答案，但大多数答案是使用 initial 或 instance in view。

有没有办法让我们可以在模型表单中初始化表单字段？

views.py

def create_order(request, *args, **kwargs):
# move this thing into model form
initial_data = {
    'user': request.user.username,
    'products': Product.objects.get(pk=kwargs['pk'])
}
form = CreateOrderForm(request.POST or None, initial=initial_data)
if form.is_valid():
    form.save()
    return redirect('homepage')
return render(request, "orders/create_order.html", {"form": form})

forms.py

class CreateOrderForm(forms.ModelForm):

# How to initialize value in this model form?

class Meta:
    model = Order
    fields = ['user', 'products', 'quantity', 'address', 'total_price']
    widgets = {
        # Make user fields disabled
        'user': forms.TextInput(attrs={'disabled': True}),
    }

谢谢。

Answer 1

class CreateOrderForm(forms.ModelForm):

# How to initialize value in this model form?

class Meta:
    model = Order
    fields = ['user', 'products', 'quantity', 'address', 'total_price']


    address = forms.CharField(
            required = True,
            widget = forms.TextInput(
                attrs={
                    'class': 'form-control valid',
                    'name': 'address',
                    'id': 'address',
                    'onfocus': 'this.placeholder = ''',
                    'onblur': "this.placeholder = 'Enter Your Address'",
                    'id': 'address',
                    'type':'text',
                    'placeholder': 'sych as: dhaka, Bangladesh',
                    'value': 'dhaka, Bangladesh'
                    'required' : True
                }
            )
    )

您可以通过这种方式设置值并添加 CSS 属性。

Answer 2

您可以覆盖 __init__ 以获取您的字段，并像这样设置它们的 initial：

class CreateOrderForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super().init(*args, **kwargs)

        self.fields['my_field'].initial = 'my_initial'

以django模型形式设置初始值

Set initial value in django model form

python

django

django-forms

django-views