Flash消息在Flask中不起作用 [英] Flash messaging not working in Flask

问题描述

我无法使用闪光灯功能在烧瓶中工作.这是我的代码.

 #！venv/bin/python3从烧瓶进口烧瓶，闪光app = Flask(__ name__)app.config ['SECRET_KEY'] ='12345'@ app.route('/')def index():flash('嗨')返回你好"如果__name__ =='__main__':app.run() 

我希望它会闪烁一条消息，提示您好，但是在我加载页面时，没有出现闪烁框.我在这里不明白什么?

解决方案

我认为主要问题是您返回的是字符串，而不是用于处理Flash并将其转换为显示消息的render_template.在此处查看此文档代码以获取有关如何处理闪光灯的示例

所以我建议尝试:返回render_template('index.html')

然后使用index.html文件设置处理Flash消息的代码.我有一种感觉，就像您在此处所做的那样，仅返回一个字符串，而没有任何地方可以让代码理解闪存将为空.

I have been unable to get the flash function to work in flask. Heres my code.

#!venv/bin/python3
from flask import Flask, flash

app = Flask(__name__)
app.config['SECRET_KEY'] = '12345'

@app.route('/')
def index():
    flash('Hi')
    return 'Hello'

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

I expected this to flash a message saying hi but when I load the page no flash box appears. What am I not understanding here?

解决方案

I think the main problem is that you're returning a string and not a render_template that handles the flash and converts it to a display message. Check out this documentation code here for an example of how to handle flashes

So I suggest trying: return render_template('index.html')

And then use the index.html file to set up your code that handles the flash message. I have a feeling that just returning a string, as you've done here, without somewhere for the code to understand the flash will give a null result.

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