在django中，提供了表单类来简化这个过程。
What you want is to create a form class with a ChoiceField. You can grab the data in this form rather than the views.py and then create a tuple the choices available from your dataset. We will do this by overriding the form's init field so that load a dynamic set of choices instead of static set of choices.
示例：

from django import forms
from yourapp.models import Brand

class BrandForm(forms.Form):
    def __init__(self, *args, **kwargs):
        super(BrandForm, self).__init__(*args, **kwargs)

        brands = Brand.objects.all()
        brand_choices = tuple(i, brand.brand_name for i, brand in enumerate(brands))
        self.fields['brand'] = forms.ChoiceField(choices=brand_choices)

Now in views.py you need to initialize the form and pass it into the context when you call render()
然后，只需将{{ form }}放入html表单，将所有字段加载到表单中
(if您没有将窗体作为"form"传递到上下文中，您将需要更改{{ }}内部的引用）
附言：使用一组静态的选择，可以在类之外定义元组，并像这样定义类（不需要覆盖__init__）：

class BrandForm(forms.Form):
    brand = forms.ChoiceField(choices=choices)

更多例子可以在django文档中找到：https://docs.djangoproject.com/en/4.1/topics/forms/