Django交易记录ATOMIC_REQUESTS [英] Django Transactions ATOMIC_REQUESTS

问题描述

我真的不清楚在Django中如何设置原子请求.在数据库设置中将ATOMIC_REQUESTS设置为True时，是否意味着现在所有视图都在事务中运行?如果我只希望只在事务中运行某些视图怎么办?然后，是否需要使用 @ transaction.non_atomic_requests 装饰器显式定义未在事务中运行的所有其他对象?

I'm really unclear how atomic requests are set in Django. When ATOMIC_REQUESTS is set to True in the DB settings does that mean that all views now run in a transaction? What if I want only want only certain views to be run in a transaction? Do I then need to explicitly define all the others that are not run in a transaction with a @transaction.non_atomic_requests decorator?

推荐答案

在数据库设置中将 ATOMIC_REQUESTS 设置为 True 时，这意味着现在所有视图都在事务中运行?

When ATOMIC_REQUESTS is set to True in the DB settings does that mean that all views now run in a transaction?

是的.从 docs :

在调用视图函数之前，Django启动一个事务.如果产生的响应没有问题，则Django提交事务.如果视图产生异常，则Django将回滚事务.

Before calling a view function, Django starts a transaction. If the response is produced without problems, Django commits the transaction. If the view produces an exception, Django rolls back the transaction.

然后是否需要使用 @ transaction.non_atomic_requests 装饰器来明确定义未在事务中运行的所有其他对象?

Do I then need to explicitly define all the others that are not run in a transaction with a @transaction.non_atomic_requests decorator?

是的

启用 ATOMIC_REQUESTS 后，仍然可以阻止视图在事务中运行.[ non_atomic_requests ]装饰器将取消给定视图的 ATOMIC_REQUESTS 的效果.

When ATOMIC_REQUESTS is enabled, it’s still possible to prevent views from running in a transaction. [The non_atomic_requests] decorator will negate the effect of ATOMIC_REQUESTS for a given view.

不过，一旦决定要根据具体情况使用事务，我宁愿不使用 ATOMIC_REQUESTS 而只使用 transaction.atomic(无论是装饰器还是上下文管理器).这是来自文档:

Once you're at the point of deciding on a case-by-case basis where transactions should be used, though, I prefer to not use ATOMIC_REQUESTS and just use transaction.atomic (whether as a decorator or a context manager) where appropriate. Here's an example from the documentation:

@transaction.atomic
def viewfunc(request):
    # This code executes inside a transaction.
    do_stuff()

这篇关于Django交易记录ATOMIC_REQUESTS的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！