Python 如何在芹菜任务中更改数据库模式?
我有一个根据子域更改数据库架构的中间件:Python 如何在芹菜任务中更改数据库模式?,python,django,celery,Python,Django,Celery,我有一个根据子域更改数据库架构的中间件: def tenant_schema_from_request(request): hostname = hostname_from_request(request) tenants_map = get_tenants_map() return tenants_map.get(hostname) def set_tenant_schema_for_request(request): schema = tenant_sche
def tenant_schema_from_request(request):
hostname = hostname_from_request(request)
tenants_map = get_tenants_map()
return tenants_map.get(hostname)
def set_tenant_schema_for_request(request):
schema = tenant_schema_from_request(request)
with connection.cursor() as cursor:
cursor.execute("SET search_path to {}".format(schema))
class TenantMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
set_tenant_schema_for_request(request)
response = self.get_response(request)
return response
但如何在芹菜任务中更改数据库模式
任务。py
@shared_task
def send_notification_task(user_id):
user = User.objects.get(pk=user_id)
...
我想你在找我
希望这有帮助 老问题,但我遇到了完全相同的问题并找到了解决方案。分享它,以防其他人需要它 在任务运行之前,应该使用芹菜
task\u prerun
信号切换活动模式
from celery.signals import task_prerun
from django.db import connection
# ensure the task always runs on the public schema
@task_prerun.connect(sender=send_notification_task)
def activate_public_schema(sender, **kwargs):
connection.schema_name = 'public'
@shared_task
def send_notification_task(user_id):
user = User.objects.get(pk=user_id)
...
下面是一个在任务运行之前将当前模式切换为公共模式的示例
from celery.signals import task_prerun
from django.db import connection
# ensure the task always runs on the public schema
@task_prerun.connect(sender=send_notification_task)
def activate_public_schema(sender, **kwargs):
connection.schema_name = 'public'
@shared_task
def send_notification_task(user_id):
user = User.objects.get(pk=user_id)
...
谢谢,但这是为了选择数据库,而不是模式,否则我错了?您需要在设置中定义多个指向同一数据库的数据库。在配置中,您可以添加该数据库在查询时使用的选项。这是您将“搜索路径”添加到的位置。我会在一分钟内编辑我的答案。