如何在Flask中为请求设置属性

问题描述

来自使用 Spark 的Java开发，我能够在中附加自定义属性请求(servlet API)实例传递给处理程序.

Coming from Java development using Spark, I was able to attach custom attributes in the Request (servlet API) instance that gets passed to a handler.

现在，在Flask(Python)中，我们得到一个包含特定请求详细信息的全局 request 对象.我有一个 @ app.before_request 装饰器，它需要基于给定的API令牌创建一个自定义用户对象，并将其附加到目标处理程序可以访问的请求上.

Now, in Flask (Python), we get a global request object containing the details of the particular request. I have a @app.before_request decorator that needs to create a custom user object based on a given API token and attach it to the request to be accessed by target handlers.

@app.before_request
def check_api():
    if 'Authorization' in request.headers:
        token = request.headers['Authorization']
        if token:
            user = verify_and_get_user(token)
            request['user'] = user


@app.route('/resources/create', methods=['POST'])
def create_resource():
    print('- User with id %s created a resource' % request['user'].id)

如何以线程安全的方式执行上述操作?

How can I do something like the above, in a thread safe manner?

推荐答案

您可以在请求期间使用 g 全局命名空间对象存储和共享资源.此处.

You can store and share resources during a request by using the g global namespace object. More details here.

您必须首先将其导入:从flask导入g .

You will have to import it first: from flask import g.

您可以在此处找到一些用法示例.

You can find some usage examples here.

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