Question

我的项目中有两个postgres数据库，每个应用程序有一个：app1：Store，app2：Warehouse。他们两个都有订单模型，其中django名称：store_order＆amp; warehouse_order（我对那部分很好）; 但是在迁移之后出现问题，store_order和warehouse_order都在warehouse_db中，而且我想要的所有这些django表只在store_db中：

github repo

settings.py

DATABASES = {
    'default': {},
    'store': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'postgres',
        'USER': 'postgres',
        'HOST': 'store_db',
        'PORT': 5432,
    },
    'warehouse': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'postgres',
        'USER': 'postgres',
        'HOST': 'warehouse_db',
        'PORT': 5432,
    }
}

DATABASE_ROUTERS = ['warehouse.router.WarehouseRouter', 'store.router.StoreRouter']

仓库/ router.py

class WarehouseRouter:
    """
    A router to control operations in warehouse app
    """
    def db_for_read(self, model, **hints):
        if model._meta.app_label == 'warehouse':
            return 'warehouse'
        else:
            return None

    def db_for_write(self, model, **hints):
        if model._meta.app_label == 'warehouse':
            return 'warehouse'
        else:
            return None

    def allow_migrate(self, db, app_label, model_name=None, **hints):
        if app_label == 'warehouse':
            return db == 'warehouse'
        return None

存储/ router.py

class StoreRouter:
    """
    A router to control operations in store app
    """
    def db_for_read(self, model, **hints):
        return 'store'

    def db_for_write(self, model, **hints):
        return 'store'

    def allow_migrate(self, db, app_label, model_name=None, **hints):
        return True

warehouse / models.py也与store / models.py相同，但app_label

除外

class Order(models.Model):
    id = models.CharField(max_length=128, null=False, unique=True, primary_key=True, default=uuid.uuid1)
    amount = models.IntegerField(null=False)
    price = models.FloatField(null=False)
    comment = models.TextField(null=True)
    created_at = models.DateTimeField(null=False, auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)


def __str__(self):
    return f'{self.id}: {self.created_at}'

class Meta:
    app_label = 'warehouse'

我尽量接近这个example

和我的迁移脚本

#!/bin/sh -

docker-compose run crestopher python manage.py makemigrations
docker-compose run crestopher python manage.py migrate --database=warehouse    
docker-compose run crestopher python manage.py migrate --database=store

我还尝试过makemigrations并使用一个db进行迁移，然后使用其他db进行迁移，但结果是相同的。

修改

我在第二天再次运行它并获得：

我不明白为什么。我将迁移脚本更改为：

#!/bin/sh -

docker-compose run crestopher python manage.py makemigrations warehouse
docker-compose run crestopher python manage.py migrate --database=warehouse

docker-compose run crestopher python manage.py makemigrations store
docker-compose run crestopher python manage.py migrate --database=store

但是在第一天我运行了大约1000次没有效果。我将尝试了解发生了什么，这些默认的django表仍然只应该存储在db中。如果我能找到答案，我会在这里给出答案。

django中的多数据库：错位的表

修改

0 个答案: