Question

在我的应用中，我有一个应该更新资源中的字段的Hook：在另一个post有人使用patch_internal方法，但我不明白，如何。

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PRESERVE_CONTEXT_ON_EXCEPTION = False中使用settings.py。

根据我尝试的方式，我得到

原始请求的404，它首先触发了钩子，
或AssertionError：

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？我怎么告诉夏娃，我想改变哪个项目？

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以获得更具说明性的示例。这里也是一个很好的post_internal example。希望这会有所帮助。

如何使用patch_internal

1 个答案: