Flask Pixel Lite

Open-Source Flask starter coded with basic modules, database, ORM and deployment scripts on top of Pixel Lite UI Kit, a fully responsive and modern Bootstrap 5 UI Kit that will help you build creative and professional websites. The Flask codebase comes with basic modules, database, ORM and deployment scripts.

Features

• UI Kit: Pixel Lite (Free Version) by Themesberg
• SQLite database, Flask-SQLAlchemy ORM
• Session-Based auth flow (login, register)
• Deployment scripts: Docker, Gunicorn / Nginx, Heroku
• Support (Email and LIVE on Discord) for registered AppSeed users.

Links

• Flask Pixel Lite - product page
• Flask Pixel Lite - LIVE Deployment
• Flask Pixel Lite - product documentation

Build from sources

$ # Clone the sources
$ git clone https://github.com/app-generator/flask-pixel-lite.git
$ cd flask-pixel-lite
$
$ # Virtualenv modules installation (Unix based systems)
$ virtualenv env
$ source env/bin/activate
$
$ # Virtualenv modules installation (Windows based systems)
$ # virtualenv env
$ # .\env\Scripts\activate
$
$ # Install requirements
$ pip3 install -r requirements.txt
$
$ # Set the FLASK_APP environment variable
$ (Unix/Mac) export FLASK_APP=run.py
$ (Windows) set FLASK_APP=run.py
$ (Powershell) $env:FLASK_APP = ".\run.py"
$
$ # Set up the DEBUG environment
$ # (Unix/Mac) export FLASK_ENV=development
$ # (Windows) set FLASK_ENV=development
$ # (Powershell) $env:FLASK_ENV = "development"
$
$ # Run the application
$ # --host=0.0.0.0 - expose the app on all network interfaces (default 127.0.0.1)
$ # --port=5000    - specify the app port (default 5000)  
$ flask run --host=0.0.0.0 --port=5000
$
$ # Access the app in browser: http://127.0.0.1:5000/

Note: To use the app, please access the registration page and create a new user. After authentication, the app will unlock the private pages.

Code-base structure

The project has a super simple structure, represented as bellow:

< PROJECT ROOT >
   |
   |-- app/__init__.py
   |-- app/
   |    |-- static/
   |    |    |-- <css, JS, images>         # CSS files, Javascripts files
   |    |
   |    |-- templates/
   |    |    |
   |    |    |-- includes/                 # Page chunks, components
   |    |    |    |
   |    |    |    |-- navigation.html      # Top bar
   |    |    |    |-- sidebar.html         # Left sidebar
   |    |    |    |-- scripts.html         # JS scripts common to all pages
   |    |    |    |-- footer.html          # The common footer
   |    |    |
   |    |    |-- layouts/                  # App Layouts (the master pages)
   |    |    |    |
   |    |    |    |-- base.html            # Used by common pages like index, UI
   |    |    |    |-- base-fullscreen.html # Used by auth pages (login, register)
   |    |    |
   |    |    |-- accounts/                 # Auth Pages (login, register)
   |    |    |    |
   |    |    |    |-- login.html           # Use layout `base-fullscreen.html`
   |    |    |    |-- register.html        # Use layout `base-fullscreen.html`  
   |    |    |
   |    |  index.html                      # The default page
   |    |  page-404.html                   # Error 404 page (page not found)
   |    |  page-500.html                   # Error 500 page (server error)
   |    |    *.html                        # All other pages provided by the UI Kit
   |
   |-- requirements.txt
   |
   |-- run.py
   |
   |-- ************************************************************************

Recompile CSS

To recompile SCSS files, follow this setup:

Step #1 - Install tools

• NodeJS 12.x or higher
• Gulp - globally
  • npm install -g gulp-cli
• Yarn (optional)

Step #2 - Change the working directory to assets folder

$ cd app/static/assets

Step #3 - Install modules (this will create a classic node_modules directory)

$ npm install
// OR
$ yarn

Step #4 - Edit & Recompile SCSS files

$ gulp scss

The generated file is saved in static/assets/css directory.

Deployment

The app is provided with a basic configuration to be executed in Docker, Heroku, Gunicorn, and Waitress.

Docker execution

---

The application can be easily executed in a docker container. The steps:

Get the code

$ git clone https://github.com/app-generator/flask-pixel-lite.git
$ cd flask-pixel-lite

Start the app in Docker

$ sudo docker-compose pull && sudo docker-compose build && sudo docker-compose up -d

Visit http://localhost:5005 in your browser. The app should be up & running.

Heroku

---

Steps to deploy on Heroku

• Create a FREE account on Heroku platform
• Install the Heroku CLI that match your OS: Mac, Unix or Windows
• Open a terminal window and authenticate via heroku login command
• Clone the sources and push the project for LIVE deployment

$ # Clone the source code:
$ git clone https://github.com/app-generator/flask-pixel-lite.git
$ cd flask-pixel-lite
$
$ # Check Heroku CLI is installed
$ heroku -v
heroku/7.25.0 win32-x64 node-v12.13.0 # <-- All good
$
$ # Check Heroku CLI is installed
$ heroku login
$ # this commaond will open a browser window - click the login button (in browser)
$
$ # Create the Heroku project
$ heroku create
$
$ # Trigger the LIVE deploy
$ git push heroku master
$
$ # Open the LIVE app in browser
$ heroku open

Gunicorn

---

Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for UNIX.

Install using pip

$ pip install gunicorn

Start the app using gunicorn binary

$ gunicorn --bind 0.0.0.0:8001 run:app
Serving on http://localhost:8001

Visit http://localhost:8001 in your browser. The app should be up & running.

Waitress

---

Waitress (Gunicorn equivalent for Windows) is meant to be a production-quality pure-Python WSGI server with very acceptable performance. It has no dependencies except ones that live in the Python standard library.

Install using pip

$ pip install waitress

Start the app using waitress-serve

$ waitress-serve --port=8001 run:app
Serving on http://localhost:8001

Visit http://localhost:8001 in your browser. The app should be up & running.

Credits & Links

• Flask Framework - The official website
• Boilerplate Code - Index provided by AppSeed
• Boilerplate Code - Index published on Github

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Flask Pixel Lite - Provided by AppSeed App Generator.