Django-自定义ModelAdmin表单不覆盖默认模型

我定义了一个模型

class subnet(models.Model):
subnet_id = models.AutoField(primary_key=True)
subnet_pod = models.ForeignKey(pod, null=True, on_delete=models.SET_NULL, verbose_name='Select Pod')
subnet_number = models.IntegerField(verbose_name='VLAN/SVI Number')
subnet_description = models.CharField(max_length=10, verbose_name='Subnet Description')
LAYER_CHOICES = (
    ('Layer2', 'Layer2'),
    ('Layer3', 'Layer3'),
)
subnet_layer = models.CharField(max_length=50, choices=LAYER_CHOICES,verbose_name='Layer2/3')
subnet_ip = models.CharField(max_length=50, verbose_name='Gateway IP/Mask')
vrf = models.ForeignKey(vrf,blank=True, null=True, on_delete=models.SET_NULL, verbose_name='Select VRF')

class Meta:
    verbose_name = 'Subnet'
    verbose_name_plural = 'Subnets'

def __str__(self):
    return self.subnet_number

我想覆盖子网ip并使用自定义表单向其添加标签和占位符，因此我有：

class subnetForm(forms.ModelForm):
class Meta:
    model = subnet
    fields = ['subnet_number', 'subnet_description', 'subnet_layer', 'vrf']
    widgets = {
        'subnet_ip': forms.TextInput(attrs={'placeholder': 'e.g,: x.x.x.x/x'}),
    }

但是，占位符不会应用于模型，也不会显示在前端

我还有一个admin.py：

class subnetAdmin(admin.ModelAdmin):
list_display = ('subnet_number','subnet_description','subnet_layer','subnet_ip','vrf')
ordering = ('-subnet_number',)

感谢您的帮助

试试这个

class subnetForm(forms.ModelForm):
   subnet_number = <use same model field datatype> forms.CharField(label = 'subnet_number', widget = forms.TextInput(attrs = {'placeholder' : 'subnet number'}))
   class Meta:
       model = subnet
       fields = ['subnet_number', __other_fields__]

类子网表单（forms.ModelForm）：
subnet_number=forms.CharField（标签='subnet_number'，小部件=forms.TextInput（属性={'placeholder'：'subnet number'}））
类元：
模型=子网
字段=[“子网\u编号”、\u其他\u字段\uuuu]

试试这个

class subnetForm(forms.ModelForm):
   subnet_number = <use same model field datatype> forms.CharField(label = 'subnet_number', widget = forms.TextInput(attrs = {'placeholder' : 'subnet number'}))
   class Meta:
       model = subnet
       fields = ['subnet_number', __other_fields__]

类子网表单（forms.ModelForm）：
subnet_number=forms.CharField（标签='subnet_number'，小部件=forms.TextInput（属性={'placeholder'：'subnet number'}））
类元：
模型=子网
字段=[“子网\u编号”、\u其他\u字段\uuuu]

这不起作用。需要占位符的字段是subnet\u ip。我试过：

class subnetForm（forms.ModelForm）：subnet\u ip=forms.CharField（label='subnet\u ip'，widget=forms.TextInput（attrs={'placeholder'：'Test'}））class Meta:model=subnet fields=['subnet\u ip'，'subnet\u number'，'subnet\u description'，'subnet\u layer'，'vrf']

这不起作用。需要占位符的字段是subnet\u ip。我试过：

class subnetForm（forms.ModelForm）：subnet\u ip=forms.CharField（label='subnet\u ip'，widget=forms.TextInput（attrs={'placeholder'：'Test'}））class Meta:model=subnet fields=['subnet\u ip'，'subnet\u number'，'subnet\u description'，'subnet\u layer'，'vrf']