Practical Flask Project: A Tutorial for Developing a Personal Blog System
This tutorial introduces the complete process of building a personal blog with Flask. First, install Flask and its extensions (SQLAlchemy for ORM, Login for user authentication, WTF for form handling, and Bootstrap for page styling). Create the project directory structure and define User (with password encryption) and Post (associated with users) data models in models.py. Initialize the Flask application in app.py, configure the SQLite database, and implement core routes such as the homepage article list, single article details, publishing articles by logged-in users, and login/logout functionality. Use Bootstrap templates (with base.html as the base, inheriting to extend the homepage, detail page, and article-writing page). After running, the blog is accessible and supports article publishing. Future enhancements can include registration, editing, and commenting. This project helps you master basic Flask applications, database operations, and user authentication.
Read MoreFlask Extensions Recommended: Flask-SQLAlchemy and User Authentication
This article introduces the necessity of Flask extensions and the use of core extensions. Flask itself is lightweight, and complex requirements require implementation through extensions. The article focuses on explaining two key extensions: Flask-SQLAlchemy: Integrates SQLAlchemy, allowing database operations through Python objects without writing SQL directly. After installation, configure the database URI, define models (such as the User class), and support table creation (db.create_all()), as well as CRUD operations (add, commit, query, etc.). Flask-Login: Handles user authentication and session management. Configure LoginManager and use Werkzeug for password hashing storage. Implement login (login_user) and logout (logout_user) functions, and protect routes with the @login_required decorator. The combination of these two extensions enables rapid construction of web applications with database and user systems. Beginners can get started by mastering basic configurations and core APIs (such as create_all and login_user). For production environments, security measures such as HTTPS and CSRF protection should be added.
Read More