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My Flask Tutorial

This is a simple blog application created with the Flask framework that allows a user to register, log in, create posts and edit or delete their own posts.

I used the The Blog Flask Tutorial

Creation of the Project and Environment Setup

Create a project directory

$ mkdir flask-tutorial

$ cd flask-tutorial

Create an environment

Windows

$ py -3 -m venv venv

macOS/Linux

$ pyhton3 -m venv venv

Activate the environment

Windows

$ venv\Scripts\activate

macOS/Linux

. venv/bin/activate

In the activated environment, install Flask

$ pip install Flask

Create a .gitignore if you will use verson control which ignores files that shouldn't be sent to the repository

venv/

*.pyc
_ _pycache_ _/

instance/

.pytest_cache/
.coverage
htmlcov/

dist/
build/
*.egg-info/

.idea
*.swp
*~

Application Factory and Running the Application

Remember a Flask application is just an instance of Flask class.

Create a directory called flaskr

$ mkdir flaskr

and include a file called _ _init _ _.py.

The init file will contain the application factory and shows Python that the flaskr directory should be treated as a package.

Place the code found from the link above in init file.

Move to the flask-tutorial directory and the run the command in your Bash, CMD or Powershell respectively

Bash

export FLASK_APP=flaskr

$ export FLASK_ENV=development

CMD

> set FLASK_APP=flaskr

> set FLASK_ENV=development

Powershell

> env:FLASK_APP=flaskr

> flask run