Django -链接多个ChoiceField

Question

我需要有用户输入他的地址首先选择国家，然后城市，然后地区，然后分区。如何在django表单中最好地实现此功能？模型类似于下面的模型：

Class Country(models.Model):
    name = models.CharField(max_length=30)

Class City(models.Model):
    name = models.CharField(max_length=30)
    country = models.ForeignKey(Country)

Class District(models.Model):
    name = models.CharField(max_length=30)
    city = models.ForeignKey(City)

Class Subdistrict(models.Model):
    name = models.CharField(max_length=30)
    district = models.ForeignKey(District)

Answer 1

您可以从django-autocomplete-light使用Filtering results based on the value of other fields in the form