Question

我无法覆盖Django ModelForm，

forms.py

class CustomerForm(forms.ModelForm):
    name = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'Customer Name '}))
    address = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'Customer Address'}))
    phone_number = forms.IntegerField(widget=forms.TextInput(attrs={'placeholder': 'Customer Phone Number '}))
    email = forms.EmailField(widget=forms.TextInput(attrs={'placeholder': 'Customer Email'}))
    contact_person = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'Contact person'}))
    amc_date = forms.DateField(widget=forms.TextInput(attrs={'placeholder': 'ex: Jan 20, 1996'}))
    amc_product = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'Products listed in AMC'}))
    warranty_date = forms.DateField(required=False, widget=forms.TextInput(attrs={'placeholder': 'ex: Jan 20, 1996'}))
    warranty_product_list = forms.CharField(required=False, widget=forms.TextInput(attrs={'placeholder': 'Products listed in warranty'}))
    support = forms.ChoiceField(choices=support_choice, required=True,)

    class Meta:
        model = Customer
        fields = ['name','address','phone_number','email','contact_person','support','amc_date','amc_product','warranty_date',
                  'warranty_product_list']

    def clean_amc_date(self):
        amc_date = self.cleaned_data.get("amc_date")
        if amc_date == "":
            amc_date = 0
        return amc_date
    def clean_amc_product(self):
        amc_product = self.cleaned_data.get("amc_date")
        if amc_product == "":
            amc_product = 0
        return amc_product

在提交表单时，错误显示为“此字段是必需的”。

Answer 1

请参阅how validators are run in forms上的文档。基本上，内置字段验证在clean_*方法之前运行;因此，如果您想在此时允许空白值，则需要使用required=False：

定义字段

amc_date = forms.DateField(required=False, widget=forms.TextInput(attrs={'placeholder': 'ex: Jan 20, 1996'}))
amc_product = forms.CharField(required=False, widget=forms.TextInput(attrs={'placeholder': 'Products listed in AMC'}))

无法覆盖ModelForm验证

1 个答案: