python - django ModelChoiceField，to_field_name

Question

当我编译我的代码时，返回了这条错误消息:

'ModelChoiceField' object has no attribute 'to_field_name'

ModelChoiceFiled 在“学校代码”字段中。

我已经输入了 to_field_name。

class UserRegister(forms.ModelForm):
    class Meta:
        mstSchool = MstSchool.objects.filter(use_yn__exact="Y").order_by("code")
        
        model = MstUser
        fields = [ 'name', 'id', 'password', 'school_code']
        widgets = {
            'id' : forms.TextInput(attrs={'placeholder' : 'User ID', 'class':'form-control'}),
            'password' : forms.TextInput(attrs={'placeholder' : 'password', 'class':'form-control school-password', 'type':'password'}),
            'name' : forms.TextInput(attrs={'placeholder' : 'name', 'class':'form-control school-name'}),
            'school_code' : forms.ModelChoiceField(queryset=MstSchool.objects.filter(use_yn__exact="Y").order_by("code"), empty_label="(Nothing)", to_field_name="school_code")
        }

'ModelChoiceField' object has no attribute 'to_field_name'

Answer 1

您混淆了字段和小部件。 ModelChoiceField 不是小部件，而是表单域:

class UserRegister(forms.ModelForm):

    <b>school_code =</b> forms.ModelChoiceField(queryset=MstSchool.objects.filter(use_yn__exact="Y").order_by("code"), empty_label="(Nothing)")

    class Meta:
        model = MstUser
        fields = [ 'name', 'id', 'password', 'school_code']
        widgets = {
            'id' : forms.TextInput(attrs={'placeholder' : 'User ID', 'class':'form-control'}),
            'password' : forms.TextInput(attrs={'placeholder' : 'password', 'class':'form-control school-password', 'type':'password'}),
            'name' : forms.TextInput(attrs={'placeholder' : 'name', 'class':'form-control school-name'}),
        }

请不要通过ModelForm 设置id 和password。密码应该被散列，通常是 set_password method [Django-doc]用于此目的。