Why is the post request not working?

Question

Flask

I wrote a simple program to learn sqlalchemy, but when sending a post request, it returns an error. Who more experienced can explain why?

from datetime import date

from flask import Flask, request, flash
from flask_sqlalchemy import SQLAlchemy
from sqlalchemy.testing import db
from wtforms_alchemy import ModelForm

app = Flask(__name__)
app.config.update(
    DEBUG=True,
    SECURE_KEY='This must be secret !',

    SQLALCHEMY_DATABASE_URI='sqlite:///test.db',
    SQLALCHEMY_TRACK_NOTIFICATION=False,

    WTF_CSRF_ENABLE=False
)

db = SQLAlchemy(app)


class GuessBookItem(db.Model):
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)

    author = db.Column(db.String(5, ))
    date_create = db.Column(db.Date, default=date.today())
    is_visible = db.Column(db.Boolean, default=True, nullable=False)

    def to_dict(self):
        return {
            'id': self.id,
            'author': self.author,
            'data_create': self.date_create,
            'is_visible': self.is_visible
        }


class GuessBookForm(ModelForm):
    class Meta:
        model = GuessBookItem()


@app.route('/', methods=['GET'])
def main():
    return str(GuessBookItem.query.all())


# Somethings wrong in there
@app.route('/create', methods=['POST'])
def create():
    print(request.form)
    form = GuessBookForm(request.form)
    if form.validate():
        guess_book = GuessBookItem(**form.data)
        db.session.add(guess_book)
        db.session.commit()

        flash('DataBase update')
        return ('valid', 200)


if __name__ == '__main__':
    db.create_all()

    app.run()

Traceback:

C:\Program Files\Python39\lib\site-packages\flask_sqlalchemy\__init__.py:872: FSADeprecationWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future.  Set it to True or False to suppress this warning.
  warnings.warn(FSADeprecationWarning(
 * Serving Flask app 'My app' (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: on
 * Restarting with stat
C:\Program Files\Python39\lib\site-packages\flask_sqlalchemy\__init__.py:872: FSADeprecationWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future.  Set it to True or False to suppress this warning.
  warnings.warn(FSADeprecationWarning(
 * Debugger is active!
 * Debugger PIN: 687-502-646
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
127.0.0.1 - - [05/Nov/2021 20:25:30] "GET / HTTP/1.1" 200 -
ImmutableMultiDict([('author', 'EnotShow')])
127.0.0.1 - - [05/Nov/2021 20:25:58] "POST /create HTTP/1.1" 500 -
Traceback (most recent call last):
  File "C:\Program Files\Python39\Lib\site-packages\flask\app.py", line 2091, in __call__
    return self.wsgi_app(environ, start_response)
  File "C:\Program Files\Python39\Lib\site-packages\flask\app.py", line 2076, in wsgi_app
    response = self.handle_exception(e)
  File "C:\Program Files\Python39\Lib\site-packages\flask\app.py", line 2073, in wsgi_app
    response = self.full_dispatch_request()
  File "C:\Program Files\Python39\Lib\site-packages\flask\app.py", line 1518, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "C:\Program Files\Python39\Lib\site-packages\flask\app.py", line 1516, in full_dispatch_request
    rv = self.dispatch_request()
  File "C:\Program Files\Python39\Lib\site-packages\flask\app.py", line 1502, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
  File "D:\Да это же мой код\Homework #12\My app.py", line 58, in create
    flash('DataBase update')
  File "C:\Program Files\Python39\Lib\site-packages\flask\helpers.py", line 391, in flash
    session["_flashes"] = flashes
  File "C:\Program Files\Python39\Lib\site-packages\flask\sessions.py", line 97, in _fail
    raise RuntimeError(
RuntimeError: The session is unavailable because no secret key was set.  Set the secret_key on the application to something unique and secret.

Why does it say that there is no secret key although it is installed?

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

It seems to me that the key should be SECRET_KEY, not SECURE_KEY.
However, it is easy to check.