Python 使用多个数据库进行Django 1.8测试时出错
我正在将Django 1.8项目从单一数据库设置转移到编写器/读取器设置。我遇到了中描述的问题,但所描述的解决方法似乎没有帮助 有人遇到过类似的问题吗?相关代码段如下: 路由器:Python 使用多个数据库进行Django 1.8测试时出错,python,django,database-mirroring,multi-database,Python,Django,Database Mirroring,Multi Database,我正在将Django 1.8项目从单一数据库设置转移到编写器/读取器设置。我遇到了中描述的问题,但所描述的解决方法似乎没有帮助 有人遇到过类似的问题吗?相关代码段如下: 路由器: class DatabaseRouter(object): """Router to handle separation of reads and writes.""" def db_for_read(self, model, **hints): """Reads go to a r
class DatabaseRouter(object):
"""Router to handle separation of reads and writes."""
def db_for_read(self, model, **hints):
"""Reads go to a read replica."""
return 'read'
def db_for_write(self, model, **hints):
"""Writes always go to default."""
return 'default'
def allow_relation(self, obj1, obj2, **hints):
"""Allow relations bet/n objects in the same DB cluster."""
db_list = ('default', 'read')
if obj1._state.db in db_list and obj2._state.db in db_list:
return True
return None
def allow_migrate(self, db, app_label, model_name=None, **hints):
"""All models end up in this pool."""
return True
相关数据库设置
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': DB_NAME,
'USER': DB_USER,
'PASSWORD': DB_PASS,
'HOST': DB_WRITE
},
'read': {
'ENGINE': 'django.db.backends.mysql',
'NAME': DB_NAME,
'USER': DB_USER,
'PASSWORD': DB_PASS,
'HOST': DB_READ,
'TEST': {
'MIRROR': 'default',
},
}
}
DATABASE_ROUTERS = ['my_project.routers.DatabaseRouter']
解决复制测试用例:
class ReplicationTestCase(TestCase):
@classmethod
def setUpClass(cls):
super(ReplicationTestCase, cls).setUpClass()
connections['read']._orig_cursor = connections['read'].cursor
connections['read'].cursor = connections['default'].cursor
@classmethod
def tearDownClass(cls):
connections['read'].cursor = connections['read']._orig_cursor
super(ReplicationTestCase, cls).tearDownClass()
有什么突然冒出来的吗?我很乐意从我们的测试环境中提供stacktraces,如果这也有用的话。谢谢 这个实际的错误似乎已经修复,但我最近遇到了一个相关的错误,解决方法可能适用于这种情况:我只是使用了一个新的设置文件,扩展并重写了数据库配置,以移动到一个单一的数据库结构。然后可以调用测试函数,如:python manage.py test--settings=app\u name.settings\u test