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You then create a global Python list called messages, which has Python dictionaries inside it. Each dictionary has two keys: title for the title of the message, and content for the message content. This is a simplified example of a data storage method; in a real-world scenario, you’d use a database that permanently saves the data and allows you to manipulate it more efficiently.

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To create a database model for posts in its own file, first create a directory called models inside your app directory: You can now add new posts and edit existing ones. Next, you’ll add a button to allow users to delete existing posts. Step 5 — Deleting Posts flask_blog/app.py . . . @app .route ( '/' ) def index ( ) : conn = get_db_connection ( ) posts = conn .execute ( 'SELECT * FROM posts' ) .fetchall ( ) conn .close ( ) return render_template ( 'index.html' , posts =posts ) Flask has many community-made Flask extensions. The following is a list of extensions you might consider using to make your development process easier:

At this point in the tutorial, your flask_app directory structure is as follows (excluding the virtual environment’s directory): . This will install a local copy of Python and pip into a directory called myprojectenv within your project directory.

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The -m flag is for module-name. This command will execute the module venv to create a new virtual environment named auth. This will create a new directory containing bin, include, and lib subdirectories. And a pyvenv.cfg file. class User (db .Model ) : id = db .Column (db .Integer , primary_key = True ) # primary keys are required by SQLAlchemy flask_app/app.py # ... @app .route ( '/create/' , methods = ( 'GET' , 'POST' ) ) def create ( ) : if request .method == 'POST' : title = request .form [ 'title' ] content = request .form [ 'content' ] if not title : flash ( 'Title is required!' ) elif not content : flash ( 'Content is required!' ) else : messages .append ( { 'title' : title , 'content' : content } ) return redirect (url_for ( 'index' ) ) return render_template ( 'create.html' )conn .execute ( 'UPDATE posts SET title = ?, content = ?' ' WHERE id = ?' , (title , content , id ) ) Certbot provides a variety of ways to obtain SSL certificates through plugins. The Nginx plugin will take care of reconfiguring Nginx and reloading the config whenever necessary. To use this plugin, type the following: Now that you’ve set up your database, you can now modify the index() view function to display all the posts you have in your database. You have now created a Flask application factory function. Next, you’ll create Flask blueprints and register them in this factory function. Step 4 — Creating Flask Blueprints