Flask 소수전공 강의자료 - 3차시
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This document shows how to set up a Flask application with SQLAlchemy to create a database with a Message model and table. It includes code to install Flask-SQLAlchemy, define the Message model class, create the database, add a message, and query for messages. It also demonstrates using Werkzeug to hash and check passwords when authenticating users.
![from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///yourdb.db'
db = SQLAlchemy(app)](https://image.slidesharecdn.com/flask-3-180304165830/85/Flask-3-9-320.jpg)
![message = Message(writer=request.form['writer'],
content=request.form['content'])
db.session.add(message)
db.session.commit()](https://image.slidesharecdn.com/flask-3-180304165830/85/Flask-3-12-320.jpg)
![username = request.form['username']
sql = "SELECT * FROM user WHERE username='%s'" % username
db.execute(sql)
username = request.form['username']
sql = "SELECT * FROM user WHERE username='?'"
db.execute(sql, (username))](https://image.slidesharecdn.com/flask-3-180304165830/85/Flask-3-19-320.jpg)
Flask 소수전공 강의자료 - 3차시
- 8. > pip install Flask-SQLAlchemy
- 9. from flask_sqlalchemy import SQLAlchemy app = Flask(__name__) app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///yourdb.db' db = SQLAlchemy(app)
- 10. class Message(db.Model): id = db.Column(db.Integer, primary_key=True) title = db.Column(db.Text, nullable=False) content = db.Column(db.Text, nullable=False) def __init__(self, title, content): self.title = title self.content = content
- 11. > python >>> from application import db >>> db.create_all()
- 16. ‣ werkzeug.security.generate_password_hash ‣ werkzeug.security.check_password_hash from werkzeug.security import generate_password_hash, check_password_hash hashed_password = generate_password_hash(password) check_password_hash(hashed_password, password)
- 19. username = request.form['username'] sql = "SELECT * FROM user WHERE username='%s'" % username db.execute(sql) username = request.form['username'] sql = "SELECT * FROM user WHERE username='?'" db.execute(sql, (username))