Python 如何创建选择框？

请帮助创建selectBox adminpaneli。我使用： models.py：

from django.db import models
from django.forms.models import ChoiceField
from django import forms

CHOICES = ('volvo', 'saab', 'opel', 'audi', 'cyan',)


class Sponsors(models.Model):
    title = models.CharField(max_length=30)
    link = models.URLField(max_length=100)
    background_color = forms.ChoiceField(widget=forms.Select, choices=CHOICES)

admin.py：

from django.contrib import admin
from sponsors.models import Sponsors


class sponsorsAdmin(admin.ModelAdmin):
    fields = ['title', 'link', 'background_color']  
    list_display = ('title',)
    search_fields = ['title']

    class Meta:
        verbose_name = 'Спонсор'
        verbose_name_plural = 'Спонсоры'        


admin.site.register(Sponsors, sponsorsAdmin)

因此，管理面板只有可见字段“id”、“标题”、“链接”。但“背景颜色”字段不可见。它也不存在于数据库中

---

我需要在adminpanel中输入“background\u color”，类似于：

而不是将

background\u color

字段添加到模型中，您应该将ModelForm子类化以包含该字段

class Sponsors(models.Model):
    title = models.CharField(max_length=30)
    link = models.URLField(max_length=100)


CHOICES = ('volvo', 'saab', 'opel', 'audi', 'cyan',)


class SponsorsForm(models.ModelForm):

    class Meta:
        model = Sponsors

    background_color = forms.ChoiceField(choices=CHOICES)


class sponsorsAdmin(admin.ModelAdmin):
    ...
    form = SponsorsForm