Question

我想使用flash来显示消息，但这样做会引发异常。下面的代码演示了错误，如果删除了对flash的调用，则可以正常工作。如何解决此错误？

from flask import Flask, flash

app = Flask(__name__)

@app.route('/')
def index():
    flash('Entered')
    return 'Completed'

app.run(debug=True)

RuntimeError: the session is unavailable because no secret key was set. Set the secret_key on the application to something unique and secret.

Answer 1

如错误所示，您尚未设置密钥，因此会话不可用。该会话依赖于密钥来签署cookie以防止篡改。消息闪烁依赖于会话。

设置SECRET_KEY配置项以修复此错误。

# set as part of the config
SECRET_KEY = 'many random bytes'

# or set directly on the app
app.secret_key = 'many random bytes'

Answer 2

在您的run.py文件中

              complete yes_no
1 HmOsw1WtXRxRfZ5tE1Jx    Yes
2 tgdzehXaH8xtgn0TkCJD    Yes
3 7PPM87DSFr1Qn6YC7ktM    Yes
4 e4NGoRoonQkch*SCMbL6     No
5 EfPm5QztsA7eKeJAm4SV    Yes
6 aJTxTtubO8vH2wi7XxZO    Yes

尝试刷新消息会引发异常

2 个答案: