import os
from flask import Flask, render_template, redirect, url_for, request
from flask_login import LoginManager, UserMixin, login_user, current_user, logout_user
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
@app.route('/')
def index():
return render_template('index.html')
app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///db.sqlite"
db = SQLAlchemy()
login_manager = LoginManager(app)
class Users(UserMixin, db.Model):
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(250), unique=True,
nullable=False)
password = db.Column(db.String(250),
nullable=False)
location = db.Column(db.String(250),
nullable=False)
db.init_app(app)
app.app_context().push()
with app.app_context():
db.create_all()
@login_manager.user_loader
def loader_user(user_id):
return Users.query.get(user_id)
@app.route('/register', methods=["GET", "POST"])
def register():
if request.method == "POST":
if not db.session.query(Users).filter_by(username=request.form.get("uname")).count() < 1:
return render_template("sign_up.html", value = "USER ALREADY EXISTS")
if request.form.get("uname") == "":
return render_template("sign_up.html", value = "USERNAME IS BLANK")
if request.form.get("psw") == "":
return render_template("sign_up.html", value = "PASSWORD IS BLANK")
if request.form.get("loc") == "":
return render_template("sign_up.html", value = "LOCATION IS BLANK")
user = Users(username=request.form.get("uname"),
password=request.form.get("psw"),
location=request.form.get("loc"))
db.session.add(user)
db.session.commit()
return redirect(url_for("login"))
return render_template("sign_up.html", value ="")
@app.route("/login", methods=["GET", "POST"])
def login():
if current_user.is_authenticated:
return redirect(url_for("index", logged_in = True, username = current_user.username))
if request.method == "POST":
user = Users.query.filter_by(
username=request.form.get("uname")).first()
if not user:
return render_template("login.html", value = request.form.get("uname"))
if user.password == request.form.get("psw"):
login_user(user)
return redirect(url_for("index", logged_in = True, username = user.username))
return render_template("login.html")
if __name__ == "__main__":
app.secret_key = 'kevin2000'
app.config['SESSION_TYPE'] = 'filesystem'
app.run(host ="0.0.0.0", port = 10000, debug=False)
Este é meu código e aqui estou recebendo este erro
Traceback (most recent call last):
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\engine\base.py", line 1964, in _exec_single_context
self.dialect.do_execute(
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\engine\default.py", line 945, in do_execute
cursor.execute(statement, parameters)
sqlite3.OperationalError: no such table: users
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\flask\app.py", line 1511, in wsgi_app
response = self.full_dispatch_request()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\flask\app.py", line 919, in full_dispatch_request
rv = self.handle_user_exception(e)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\flask\app.py", line 917, in full_dispatch_request
rv = self.dispatch_request()
^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\flask\app.py", line 902, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args) # type: ignore[no-any-return]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\theco\OneDrive\Documents\veil\app.py", line 41, in register
if not db.session.query(Users).filter_by(username=request.form.get("uname")).count() < 1:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\orm\query.py", line 3147, in count
self._legacy_from_self(col).enable_eagerloads(False).scalar()
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\orm\query.py", line 2836, in scalar
ret = self.one()
^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\orm\query.py", line 2809, in one
return self._iter().one() # type: ignore
^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\orm\query.py", line 2858, in _iter
result: Union[ScalarResult[_T], Result[_T]] = self.session.execute(
^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\orm\session.py", line 2365, in execute
return self._execute_internal(
^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\orm\session.py", line 2251, in _execute_internal
result: Result[Any] = compile_state_cls.orm_execute_statement(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\orm\context.py", line 306, in orm_execute_statement
result = conn.execute(
^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\engine\base.py", line 1416, in execute
return meth(
^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\sql\elements.py", line 523, in _execute_on_connection
return connection._execute_clauseelement(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\engine\base.py", line 1638, in _execute_clauseelement
ret = self._execute_context(
^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\engine\base.py", line 1843, in _execute_context
return self._exec_single_context(
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\engine\base.py", line 1983, in _exec_single_context
self._handle_dbapi_exception(
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\engine\base.py", line 2352, in _handle_dbapi_exception
raise sqlalchemy_exception.with_traceback(exc_info[2]) from e
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\engine\base.py", line 1964, in _exec_single_context
self.dialect.do_execute(
File "C:\Users\theco\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\sqlalchemy\engine\default.py", line 945, in do_execute
cursor.execute(statement, parameters)
sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such table: users
[SQL: SELECT count(*) AS count_1
FROM (SELECT users.id AS users_id, users.username AS users_username, users.password AS users_password, users.location AS users_location
FROM users
WHERE users.username = ?) AS anon_1]
[parameters: ('xdgsdg',)]
(Background on this error at: https://sqlalche.me/e/20/e3q8)
Eu pesquisei em outros lugares, mas só falam que o db.create_all() não está lá. Eu também sou muito novo no Flask, então alguém pode me ajudar, por favor.
Eu também tentei db.drop_all() e depois db.create_all()
isso também não pareceu funcionar
se ajudar, também posso fornecer o sign_up.html de onde o erro está ocorrendo quando envio o formulário