移民问题

Question

我通过删除一些字段对我的model.py文件进行了一些更改，现在它不起作用了。它正在寻找我删除的字段。 [！[

from django.db import models
from babysitters.models import Babysitter
from django.contrib.auth.models import User

# Create your models here.

class Order(models.Model):
    first_name = models.CharField(max_length=255, blank=True)
    last_name = models.CharField(max_length=255, blank=True)
    address1 = models.CharField(max_length=255, blank=True)
    address2 = models.CharField(max_length=255, blank=True)
    city = models.CharField(max_length=20, null=True)
    county = models.CharField(max_length=100, null=True)
    postcode = models.CharField(max_length=7, null=True)
    email = models.CharField(max_length=50, blank=True, null=True)
    phone = models.CharField(max_length=10, blank=True)
    date = models.DateField(max_length=12, default=0)
    
    def __str__(self):
        return "{0}-{1}-{2}".format(self.id, self.date, self.user)
 
        
        
class OrderLineItem(models.Model):
    user = models.ForeignKey(User, null=False),
    order = models.ForeignKey(Order, null=False, related_name='orders')
    babysitter = models.ForeignKey(Babysitter, null=False)
    quantity = models.IntegerField(blank=False)
    
    def __str__(self):
        return "{0} {1} @ {2}".format(self.quantity, self.babysitter.firstName, self.babysitter.price)

] 2] 2