如何使用patch_internal

Question

在我的应用程序中，我有一个 Hook 应该更新资源中的字段：另一个post有人用了patch_internal方法，但是我没看懂，怎么弄的。

from my_application import app
from eve.methods.patch import patch_internal

def my_hook(...):
    with app.test_request_context():
        patch_internal("my_resource", payload={"bar": "bar_value"}, lookup={"foo": "foo_value"})

我尝试在 settings.py 中使用 PRESERVE_CONTEXT_ON_EXCEPTION = False。

根据我尝试的方式，我得到其中之一

原始请求的 404，首先触发了挂钩，
或断言错误：

.

Debugging middleware caught exception in streamed response at a point where response headers were already sent.
Traceback (most recent call last):
  File ".../lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File ".../lib/python2.7/site-packages/flask/app.py", line 1825, in wsgi_app
    ctx.auto_pop(error)
  File ".../lib/python2.7/site-packages/flask/ctx.py", line 374, in auto_pop
    self.pop(exc)
  File ".../lib/python2.7/site-packages/flask/ctx.py", line 357, in pop
% (rv, self)
AssertionError: Popped wrong request context.
(<RequestContext 'http://127.0.0.1:5001/' [GET] of eve> instead of <RequestContext 'http://127.0.0.1:5001/my_endpoint' [GET] of eve>)

我的问题是：

patch_internal 的正确参数是什么？我要如何告诉 Eve，我要更改哪个项目？

Answer 1

这是一个应该有效的简单示例：

from eve import Eve
from eve.methods.patch import patch_internal


app = Eve()

def my_hook(*args):
    with app.test_request_context():
        payload = {"bar": "bar_value"}
        lookup = {"_id": "4f71e038c88e201118000002"}
        patch_internal("my_resource", payload, **lookup)


# this is rather stupid. We're going to patch the same document on *every* GET request, but you get the point
app.on_post_GET += my_hook


if __name__ == '__main__':
    app.run()

或者您可以查看 patch internal test for a slightly more articulate example. Also here is a good post_internal example。希望这有帮助。

如何使用patch_internal

How to use patch_internal

eve