Question

我正在使用Django版本1.8.3和mysql版本5.6.21 MySQL社区服务器（GPL）。

我一直在尝试为用户登录实现数据库，如下所示。

is_active = models.BooleanField(default=True)
is_admin = models.BooleanField(default=False)

但当我对此manage.py migrate时，我得到了

BEGIN;
ALTER TABLE `login_user` ALTER COLUMN `is_active` SET DEFAULT 1;
ALTER TABLE `login_user` ALTER COLUMN `is_active` DROP DEFAULT;
ALTER TABLE `login_user` ALTER COLUMN `is_admin` SET DEFAULT 0;
ALTER TABLE `login_user` ALTER COLUMN `is_admin` DROP DEFAULT;
COMMIT;

我不明白为什么它设置默认值然后丢弃它。谁能告诉我这里发生了什么？

谢谢。

编辑：我添加了迁移文件。

class Migration(migrations.Migration):

dependencies = [
]

operations = [
    migrations.CreateModel(
        name='User',
        fields=[
            ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
            ('first_name', models.CharField(max_length=50)),
            ('last_name', models.CharField(max_length=50)),
            ('email', models.EmailField(max_length=50)),
            ('password', models.CharField(max_length=50)),
            ('is_active', models.BooleanField()),
            ('is_admin', models.BooleanField()),
            ('created_at', models.DateTimeField(auto_now_add=True)),
            ('num_friends', models.PositiveSmallIntegerField()),
            ('bio', models.CharField(max_length=150)),
            ('my_photo', models.ImageField(upload_to=b'profile')),
        ],
        options={
        },
        bases=(models.Model,),
    ),
]

class Migration(migrations.Migration):

dependencies = [
    ('login', '0001_initial'),
]

operations = [
    migrations.AlterField(
        model_name='user',
        name='is_active',
        field=models.BooleanField(default=True),
    ),
    migrations.AlterField(
        model_name='user',
        name='is_admin',
        field=models.BooleanField(default=False),
    ),
]


mysql> desc login_user;
+-------------+----------------------+------+-----+---------+----------------+
| Field       | Type                 | Null | Key | Default | Extra          |
+-------------+----------------------+------+-----+---------+----------------+
| id          | int(11)              | NO   | PRI | NULL    | auto_increment |
| first_name  | varchar(50)          | NO   |     | NULL    |                |
| last_name   | varchar(50)          | NO   |     | NULL    |                |
| email       | varchar(50)          | NO   |     | NULL    |                |
| password    | varchar(50)          | NO   |     | NULL    |                |
| is_active   | tinyint(1)           | NO   |     | NULL    |                |
| is_admin    | tinyint(1)           | NO   |     | NULL    |                |
| created_at  | datetime(6)          | NO   |     | NULL    |                |
| num_friends | smallint(5) unsigned | NO   |     | NULL    |                |
| bio         | varchar(150)         | NO   |     | NULL    |                |
| my_photo    | varchar(100)         | NO   |     | NULL    |                |
+-------------+----------------------+------+-----+---------+----------------+
11 rows in set (0.00 sec)

django migration set默认不起作用

0 个答案: