drought_backup/users/models.py

import uuid

from django.contrib.auth.models import AbstractUser, User
from django.db import models

# Create your models here.
class YearRange(models.Model):
    id = models.UUIDField('id',primary_key=True,default=uuid.uuid4)
    user = models.ForeignKey(User,blank=False,null=False,on_delete=models.CASCADE)
    start_year = models.CharField('起始年份',max_length=256)
    end_year = models.CharField('截止年份',max_length=256)

    def __str__(self):
        return self.start_year