禁用在Flask的url_for函数中转义字符 [英] disabling character escaping in Flask's url_for function

问题描述

Flask的 url_for 方法是否有一个选项来禁用自动转义？所以如果我有一个名为 getUser 的端点，路由如下： / user /< userID> ，我想调用 url_for（'getUser'，userID ='％'），并返回 / user /％。目前它会逃脱％symobl并发出 / user /％25 。我想这样做，因为 url_for 必须在模板编译时运行，但最终的URL是在运行javscript脚本时组成的。我将使用JavaScript字符串替换方法将 / user /％转换为 / user / abcd ，但替换我使用的脚本需要您使用％符号作为占位符。

Does Flask's url_for method have an option to disable autoescaping? So if I have an endpoint called getUser with a route like this: /user/<userID>, I want to call url_for('getUser', userID='%') and have it return /user/%. Currently it will escape the % symobl and give out /user/%25. I want to do that because url_for has to run at template compile-time, but the final URL is composed when a javscript script runs. I will be using a javascript string substitution method to convert /user/% into /user/abcd, but the substitution script I'm using requires you to use a % symbol as the placeholder.

推荐答案

url_for 不支持您的用例，但假设您在Jinja模板中使用它，您只需添加一个调用 替换 删除编码：

url_for does not support your use case, but assuming you are using it inside a Jinja template you could just add a call to replace to remove the encoding:

{{ url_for('get_user', user_id='%') | replace('%25', '%') }}

或者，如果你传递URL在普通的Python代码中，您可以使用 urllib.parse.unquote （或 urllib.unquote 如果你还在Python 2）：

Alternatively, if you passing the URL around in normal Python code you could use urllib.parse.unquote (or urllib.unquote if you are still on Python 2):

url = url_for('get_user', 'user_id'='%')
url = unquote(url)

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