我正在使用数据库路由器,因此我的应用程序有两个数据库。一个数据库用于默认 django 数据,另一个数据库用于存储默认 django 数据。
在我的管理员中我已经覆盖了save_model
函数以保存created_by
变量,但我无法做到这一点。
Cannot assign "<User: testuser>": the current database router prevents this relation.
数据库路由器:
from django.conf import settings
class DatabaseAppsRouter(object):
def db_for_read(self, model, **hints):
"""Point all read operations to the specific database."""
if settings.DATABASE_APPS_MAPPING.has_key(model._meta.app_label):
return settings.DATABASE_APPS_MAPPING[model._meta.app_label]
return None
def db_for_write(self, model, **hints):
"""Point all write operations to the specific database."""
if settings.DATABASE_APPS_MAPPING.has_key(model._meta.app_label):
return settings.DATABASE_APPS_MAPPING[model._meta.app_label]
return None
def allow_relation(self, obj1, obj2, **hints):
"""Allow any relation between apps that use the same database."""
db_obj1 = settings.DATABASE_APPS_MAPPING.get(obj1._meta.app_label)
db_obj2 = settings.DATABASE_APPS_MAPPING.get(obj2._meta.app_label)
if db_obj1 and db_obj2:
if db_obj1 == db_obj2:
return True
else:
return False
return None
def allow_syncdb(self, db, model):
"""Make sure that apps only appear in the related database."""
if model._meta.app_label in ['south']:
return True;
elif db in settings.DATABASE_APPS_MAPPING.values():
return settings.DATABASE_APPS_MAPPING.get(model._meta.app_label) == db
elif settings.DATABASE_APPS_MAPPING.has_key(model._meta.app_label):
return False
return None
admin:
class SomeEntityAdmin(admin.ModelAdmin):
def save_model(self, request, obj, form, change):
user = request.user._wrapped if hasattr(request.user,'_wrapped') else request.user
if not obj.created_by:
obj.created_by = user
obj.save()
我什至尝试使用定义不同的数据库save(using='thedb')
但这也不起作用。我的数据库路由器有问题吗?