我在模型级别定义了一个枚举字段（“类型”），如下所示，如何在模型字段中实现相应的ModelForm字段？实际上，呈现的HTML代码不会输出单选按钮，而是将此字段包装在一个空列表中。为了填充单选按钮选择，是否应该“复制”表单类中的枚举选择，还有其他方法可以利用已经在模型级别定义的选择吗？

渲染的HTML

<div class="form-group">
    <label for="id_type_0">Type</label>
    <ul id="id_type" class="form-control">
    </ul>
</div>  

models.py

class Foo(models.Model):
    name =  models.CharField(max_length=50,blank=False,null=False)

    TYPE_LIST =  [ 
        ('EXT_CL','Customer'),('INT_TP','Internal third party'),('INT_OW','Owner'),]  

    type = models.CharField(max_length=6,choices=TYPE_LIST,default='EXT_CL')  

    class Meta:
        managed = True
        db_table = 'foos'
        fields = ('name','type')

    def __str__(self):
        object_name = self.name 
        return object_name 

forms.py

class FooCreateForm(forms.ModelForm):

    def __init__(self,*args,**kwargs):
        super().__init__(*args,**kwargs)
        self.label_suffix = ''

        self.fields['name'] = forms.CharField(label='Name',widget=forms.TextInput(attrs={ 'class': 'form-control' }))
        self.fields['type'] = forms.ChoiceField(label='Type',required=True,widget=forms.RadioSelect(attrs={ 'class': 'form-control' }))   

        class Meta(object):
            model = Foos
            fields = ('name','type')

        def clean_name(self):
            name = self.cleaned_data['name']
            return name

        def clean_type(self):
            type = self.cleaned_data['type']
            return type

template.html

<form id="foo-create-form" method="post" action=" " role="form">
{% csrf_token %}
    <div class="form-group">
        {{ foo_create_form.name.label_tag }}
        {{ foo_create_form.name }}

    </div>
    <div class="form-group">
        {{ foo_create_form.type.label_tag }}
        {{ foo_create_form.type }}
    </div>   
 </form>