其后我在我的模型做了一些修改，我放弃了我的数据库，并开始再次进行迁移。
python3 manage.py makemigrations //it creates all the tables
python3 manage.py migrate //the output is OK
然而，当我尝试查看我的4桌，我看到他们中的一个缺失。这里是我的models.py文件：
from django.db import models
from datetime import datetime
from django.contrib.auth.models import AbstractUser
class UserTwo(AbstractUser):
name = models.CharField(max_length=20, unique=True)
surname = models.CharField(max_length=20, unique=True)
username = models.CharField(max_length=20, unique=True)
password = models.CharField(max_length=20, unique=True)
email = models.EmailField(max_length=20, unique=True)
use_in_migrations = True
class Story(models.Model):
title = models.CharField(max_length=200)
story = models.TextField(default="")
date = models.DateTimeField(default=datetime.now())
author = models.ForeignKey(UserTwo, on_delete=models.CASCADE)
likes = models.IntegerField(default=0)
comments = models.IntegerField(default=0)
def __str__(self):
return "%s %s %s " % (self.title, self.story, self.date)
class Comment(models.Model):
com = models.CharField(max_length=400)
date = models.DateTimeField(default=datetime.now())
user = models.ForeignKey(UserTwo, on_delete=models.CASCADE)
story = models.ForeignKey(Story, on_delete=models.CASCADE)
def __str__(self):
return "%s %s" % (self.com, self.date)
class Like(models.Model):
user = models.ForeignKey(UserTwo, on_delete=models.CASCADE, unique=False)
story = models.ForeignKey(Story, on_delete=models.CASCADE, unique=False)
timestamp = models.DateTimeField(default=datetime.now())
def __str__(self):
return self.user.username
该UserTwo模型是迁移也没有创造的一个表中的一个。你要知道，这是我丢弃DB之前所做的更改发生在模型中。
这是我的移民文件：
import datetime
from django.conf import settings
import django.contrib.auth.models
from django.db import migrations, models
import django.utils.timezone
class Migration(migrations.Migration):
initial = True
dependencies = [
('auth', '0009_alter_user_last_name_max_length'),
]
operations = [
migrations.CreateModel(
name='UserTwo',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('last_login', models.DateTimeField(blank=True, null=True, verbose_name='last login')),
('is_superuser', models.BooleanField(default=False, help_text='Designates that this user has all permissions without explicitly assigning them.', verbose_name='superuser status')),
('first_name', models.CharField(blank=True, max_length=30, verbose_name='first name')),
('last_name', models.CharField(blank=True, max_length=150, verbose_name='last name')),
('is_staff', models.BooleanField(default=False, help_text='Designates whether the user can log into this admin site.', verbose_name='staff status')),
('is_active', models.BooleanField(default=True, help_text='Designates whether this user should be treated as active. Unselect this instead of deleting accounts.', verbose_name='active')),
('date_joined', models.DateTimeField(default=django.utils.timezone.now, verbose_name='date joined')),
('name', models.CharField(max_length=20, unique=True)),
('surname', models.CharField(max_length=20, unique=True)),
('username', models.CharField(max_length=20, unique=True)),
('password', models.CharField(max_length=20, unique=True)),
('email', models.EmailField(max_length=20, unique=True)),
('groups', models.ManyToManyField(blank=True, help_text='The groups this user belongs to. A user will get all permissions granted to each of their groups.', related_name='user_set', related_query_name='user', to='auth.Group', verbose_name='groups')),
('user_permissions', models.ManyToManyField(blank=True, help_text='Specific permissions for this user.', related_name='user_set', related_query_name='user', to='auth.Permission', verbose_name='user permissions')),
],
options={
'verbose_name': 'user',
'verbose_name_plural': 'users',
'abstract': False,
},
managers=[
('objects', django.contrib.auth.models.UserManager()),
],
),
migrations.CreateModel(
name='Comment',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('com', models.CharField(max_length=400)),
('date', models.DateTimeField(default=datetime.datetime(2019, 2, 4, 9, 57, 42, 656878))),
],
),
migrations.CreateModel(
name='Like',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('timestamp', models.DateTimeField(default=datetime.datetime(2019, 2, 4, 9, 57, 42, 657598))),
],
),
migrations.CreateModel(
name='Story',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('title', models.CharField(max_length=200)),
('story', models.TextField(default='')),
('date', models.DateTimeField(default=datetime.datetime(2019, 2, 4, 9, 57, 42, 656267))),
('likes', models.IntegerField(default=0)),
('comments', models.IntegerField(default=0)),
('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
],
),
migrations.AddField(
model_name='like',
name='story',
field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='rubies.Story'),
),
migrations.AddField(
model_name='like',
name='user',
field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
),
migrations.AddField(
model_name='comment',
name='story',
field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='rubies.Story'),
),
migrations.AddField(
model_name='comment',
name='user',
field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
),
]
此外，我还有其他项目在我的Django的文件夹了。难道这是为什么它不工作？有没有人有任何想法，为什么出现这种情况？谢谢！ :)
从UserTwo删除use_in_migrations = True，然后再试一次。