Flask Nextjs E-commerce Web Template

Frontend was hosted through Netlify

Backend was once hosted through Heroku for project when it was free

A structured E-commerce REST API built to be the foundational backbone of a production-grade web app. Dev for hosting & new features such as a cart & payment is still ongoing.

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Table of Contents

1. About The Project
   • Built With
2. Getting Started
   • Installing Backend Dependencies
   • Installing Frontend Dependencies
   • Setting up Auth0
   • Setting up Environment Variables
3. Usage
4. Testing
5. API Documentation
   • Getting Started API
   • Error Handling
   • Table of Endpoints
   • Endpoint Table of Contents
6. Roadmap
7. Contributing
8. License
9. Contact
10. Acknowledgements

About The Project

This project is the Capstone Project for the Udacity Full-Stack Web Developer Nanodegree program. The purpose of this REST API is to develop a template for the creation of custom modern E-commerce websites.

A list of helpful resources are listed in the acknowledgements.

Built With

• Python-3.7.9
• Flask
• PostgreSQL
• SQLAlchemy
• Auth0
• Heroku Backend Deployment
• Netlify Frontend Deployment
• Postman
• Next.js

Getting Started

Installing Backend Dependencies

Python 3.7

Follow the instructions to install Python 3.7.9 for your platform in the python docs

PostgreSQL

Follow the instructions to install PostgreSQL locally for your platform on the PostgreSQL website

Virtual Environment

It is recommended to work within a virtual environment using venv for this project. This keeps dependencies organized for each project. Instructions for setting this up can be found here

PIP Dependencies

Once the virtual environment is setup and running, install the pip dependencies by navigating to the root directory of the project and running:

pip3 install -r requirements.txt

This will install all required packages that are used for the Flask backend.

Key Dependencies

• Flask
• SQLAlchemy
• Flask-CORS

Installing Frontend Dependencies

Setup NPM

Follow the instructions to install npm at the following link

Node Modules

While in the root directory of the project, run the following:

npm install

This will install the node-modules needed by referencing the package.json file.

Setting up Auth0

To set up Auth0 for this project, refer to the following steps:

1. Sign up for a free account on the Auth0 website.
2. Next, create a new single-page application with the name Flask-Ecommerce.
3. In Application settings, input your root URL to Allowed Callback URLs, Allowed Logout URLs, and Allowed Web Origins. For example:
   a. http://localhost:3000 on all of the above for local hosting, or
   b. https://HEROKU_APP_NAME.herokuapp.com for your Heroku deployment.
4. Create an API in Auth0 with RBAC and Add Permissions in the Access Token enabled in the API settings.
5. In the API's Permissions tab, add the following permissions:

Permission	Description
post:products	Adds new products
patch:products	Edits products
delete:products	Deletes products

6. Finally, add the Role of Admin to the API that has all of the above permissions. Add Users with the Admin role in order for them to be authenticated to use the above HTTP requests.

Roles (Admin & Public)

• Admin: This role includes permissions for all endpoints in the Table of Endpoints, as well as the POST, PATCH, & DELETE requests shown above in Step 5.
• Public: This role includes only GET request permissions, as this will be for the users of the world to use. This role excludes any rights to manipulating the PostgreSQL database.

Setting up Environment Variables

Create 2 .env files in the following locations following the .env.example file format:

1. In the directory /backend/src and
2. in the root directory.

NOTE: These environment variables will need to be added to the Configure Vars Settings on your Heroku deployment app if using Heroku.

Usage

Currently, the Frontend is still in development, but the Backend REST API can be used/tested with Postman.

Testing

The preferred way to test the backend HTTP requests are to use Postman, however, the Python Unittest file is included in /backend/src folder and is titled test_app.py.

Postman Testing

Refer to the documentation within the Postman Collection for details regarding setup.

NOTE: A JWT access token is needed for Postman testing. The JWT token must be from an authenticated user with the role of Admin, which has all the necessary permissions.

Python Unittest

The Python Unittest is located in the /backend folder titled test_app.py. Run the tests following these steps:

1. Run the Flask server from the /backend/src directory virtual environment using these terminal bash commands:

   # This will run the flask app on port 5000
   # On Linux: use `export`
   # On Windows: use `set`
   export FLASK_APP=app.py
   export FLASK_ENV=development
   flask run

2. Now that the Flask server is running locally, the python unit tests can be run with:

   python3 test_app.py

API Documentation

Getting Started API

• Base URL: The backend can only be run locally or viewed at the URL: https://flask-ecommerce-rest-api.herokuapp.com/. When running locally, the backend app is hosted at the default URL, http://127.0.0.1:5000/, which is set as a proxy in the frontend configuration. This is the domain which must be used when making API requests via postman or curl.
• Authentication: This version of the application does not require authentication or API keys.

Error Handling

Errors are returned as JSON objects in the following format:

{
    "success": False,
    "error": 400,
    "message": "bad request"
}

The API will return the five error type default responses when requests fail (unless custom response is assigned):

• 400: Bad Request
• 401: Unauthorized
• 403: Forbidden
• 404: Resource Not Found
• 422: Not Processable
• 500: Internal Server Error

Table of Endpoints

Below is a table of the methods allowed for each of the 3 endpoints.

Endpoints		Methods
	GET	POST	PATCH	DELETE
/	X
/collections	X
/collections/category_id	X
/collections/mens-apparel	X
/collections/mens-apparel/product_id	X
/collections/womens-apparel	X
/collections/womens-apparel/product_id	X
/collections/holiday	X
/collections/holiday/product_id	X
/collections/misc	X
/collections/misc/product_id	X
/products	X	X	X	X
/products/product_id	X

Endpoint Table of Contents

1. Collections:
   • GET /collections
   • GET /collections/category_id
   • GET /collections/mens-apparel
   • GET /collections/mens-apparel/product_id
   • GET /collections/womens-apparel
   • GET /collections/womens-apparel/product_id
   • GET /collections/holiday
   • GET /collections/holiday/product_id
   • GET /collections/misc
   • GET /collections/misc/product_id
2. Products:
   • GET /products
   • GET /products/product_id
3. Index:
   • GET /

GET /collections

Retrieves category collections from database:

$ curl -X GET http://127.0.0.1:5000/collections

Example Response

{
  "category_info": [
    {
      "active": true, 
      "category_name": "Mens-Apparel", 
      "description": "This category is for mens apparel", 
      "id": 1, 
      "picture": "static/images/categories/mens_apparel"
    }, 
    {
      "active": true, 
      "category_name": "Womens-Apparel", 
      "description": "This category is for womens apparel", 
      "id": 2, 
      "picture": "static/images/categories/womens_apparel"
    }, 
    {
      "active": true, 
      "category_name": "Holiday", 
      "description": "This category is for holiday items", 
      "id": 3, 
      "picture": "static/images/categories/holiday"
    }, 
    {
      "active": true, 
      "category_name": "Misc", 
      "description": "This category is for miscellaneous items", 
      "id": 4, 
      "picture": "static/images/categories/misc"
    }
  ], 
  "success": true
}

GET /collections/category_id

Retrieves specific category collection from database:

$ curl -X GET http://127.0.0.1:5000/collections/1

Example Response

{
  "category_info": {
    "active": true, 
    "category_name": "Mens-Apparel", 
    "description": "This category is for mens apparel", 
    "id": 1, 
    "picture": "static/images/categories/mens_apparel"
  }, 
  "success": true
}

GET /collections/mens-apparel

Retrieves mens-apparel collection of products from database:

$ curl -X GET http://127.0.0.1:5000/collections/mens-apparel

Example Response

{{
  "mens_apparel_data": [
    {
      "category_id": [
        1
      ], 
      "id": 1, 
      "msrp": 25.0, 
      "picture": "static/images/products/1", 
      "product_description": "This is a tapered mens summer blue t-shirt.", 
      "product_name": "Mens Summer Blue Tee"
    }, 
    {
      "category_id": [
        1, 
        3
      ], 
      "id": 3, 
      "msrp": 40.0, 
      "picture": "static/images/products/3", 
      "product_description": "This is a husky red mens holiday sweater.", 
      "product_name": "Mens Holiday Sweater"
    }, 
    {
      "category_id": [
        1, 
        2, 
        3, 
        4
      ], 
      "id": 4, 
      "msrp": 12.0, 
      "picture": "static/images/products/4", 
      "product_description": "This is a pair of black holiday unisex socks.", 
      "product_name": "Holiday Unisex Socks"
    }
  ], 
  "success": true
}

GET /collections/mens-apparel/product_id

Retrieves specific mens-apparel collection of products from database:

$ curl -X GET http://127.0.0.1:5000/collections/mens-apparel/1

Example Response

{
  "mens_apparel_data": {
    "category_id": [
      1
    ], 
    "id": 1, 
    "msrp": 25.0, 
    "picture": "static/images/products/1", 
    "product_description": "This is a tapered mens summer blue t-shirt.", 
    "product_name": "Mens Summer Blue Tee"
  }, 
  "success": true
}

GET /collections/womens-apparel

Retrieves womens-apparel collection of products from database:

$ curl -X GET http://127.0.0.1:5000/collections/womens-apparel

Example Response

{
  "success": true, 
  "womens_apparel_data": [
    {
      "category_id": [
        2
      ], 
      "id": 2, 
      "msrp": 40.0, 
      "picture": "static/images/products/2", 
      "product_description": "This is a white wool womens sweater", 
      "product_name": "Womens Sweater"
    }, 
    {
      "category_id": [
        1, 
        2, 
        3, 
        4
      ], 
      "id": 4, 
      "msrp": 12.0, 
      "picture": "static/images/products/4", 
      "product_description": "This is a pair of black holiday unisex socks.", 
      "product_name": "Holiday Unisex Socks"
    }, 
    {
      "category_id": [
        2, 
        4
      ], 
      "id": 5, 
      "msrp": 120.0, 
      "picture": "static/images/products/5", 
      "product_description": "This is a womens watch in gold.", 
      "product_name": "Womens Watch"
    }
  ]
}

GET /collections/womens-apparel/product_id

Retrieves specific womens-apparel collection of products from database:

$ curl -X GET http://127.0.0.1:5000/collections/womens-apparel/2

Example Response

{
  "success": true, 
  "womens_apparel_data": {
    "category_id": [
      2
    ], 
    "id": 2, 
    "msrp": 40.0, 
    "picture": "static/images/products/2", 
    "product_description": "This is a white wool womens sweater", 
    "product_name": "Womens Sweater"
  }
}

GET /collections/holiday

Retrieves holiday collection of products from database:

$ curl -X GET http://127.0.0.1:5000/collections/holiday

Example Response

{
  "holiday_products_data": [
    {
      "category_id": [
        1, 
        3
      ], 
      "id": 3, 
      "msrp": 40.0, 
      "picture": "static/images/products/3", 
      "product_description": "This is a husky red mens holiday sweater.", 
      "product_name": "Mens Holiday Sweater"
    }, 
    {
      "category_id": [
        1, 
        2, 
        3, 
        4
      ], 
      "id": 4, 
      "msrp": 12.0, 
      "picture": "static/images/products/4", 
      "product_description": "This is a pair of black holiday unisex socks.", 
      "product_name": "Holiday Unisex Socks"
    }
  ], 
  "success": true
}

GET /collections/holiday/product_id

Retrieves specific holiday collection of products from database:

$ curl -X GET http://127.0.0.1:5000/collections/holiday/3

Example Response

{
  "holiday_products_data": {
    "category_id": [
      1, 
      3
    ], 
    "id": 3, 
    "msrp": 40.0, 
    "picture": "static/images/products/3", 
    "product_description": "This is a husky red mens holiday sweater.", 
    "product_name": "Mens Holiday Sweater"
  }, 
  "success": true
}

GET /collections/misc

Retrieves miscellaneous collection of products from database:

$ curl -X GET http://127.0.0.1:5000/collections/misc

Example Response

{
  "misc_products_data": [
    {
      "category_id": [
        1, 
        2, 
        3, 
        4
      ], 
      "id": 4, 
      "msrp": 12.0, 
      "picture": "static/images/products/4", 
      "product_description": "This is a pair of black holiday unisex socks.", 
      "product_name": "Holiday Unisex Socks"
    }, 
    {
      "category_id": [
        2, 
        4
      ], 
      "id": 5, 
      "msrp": 120.0, 
      "picture": "static/images/products/5", 
      "product_description": "This is a womens watch in gold.", 
      "product_name": "Womens Watch"
    }
  ], 
  "success": true
}

GET /collections/misc/product_id

Retrieves specific miscellaneous collection of products from database:

$ curl -X GET http://127.0.0.1:5000/collections/misc/4

Example Response

{
  "misc_products_data": {
    "category_id": [
      1, 
      2, 
      3, 
      4
    ], 
    "id": 4, 
    "msrp": 12.0, 
    "picture": "static/images/products/4", 
    "product_description": "This is a pair of black holiday unisex socks.", 
    "product_name": "Holiday Unisex Socks"
  }, 
  "success": true
}

GET /products

Retrieves all products from database:

$ curl -X GET http://127.0.0.1:5000/products

Example Response

{
  "products": [
    {
      "category_id": [
        1
      ], 
      "id": 1, 
      "msrp": 25.0, 
      "picture": "static/images/products/1", 
      "product_description": "This is a tapered mens summer blue t-shirt.", 
      "product_name": "Mens Summer Blue Tee"
    }, 
    {
      "category_id": [
        2
      ], 
      "id": 2, 
      "msrp": 40.0, 
      "picture": "static/images/products/2", 
      "product_description": "This is a white wool womens sweater", 
      "product_name": "Womens Sweater"
    }, 
    {
      "category_id": [
        1, 
        3
      ], 
      "id": 3, 
      "msrp": 40.0, 
      "picture": "static/images/products/3", 
      "product_description": "This is a husky red mens holiday sweater.", 
      "product_name": "Mens Holiday Sweater"
    }, 
    {
      "category_id": [
        1, 
        2, 
        3, 
        4
      ], 
      "id": 4, 
      "msrp": 12.0, 
      "picture": "static/images/products/4", 
      "product_description": "This is a pair of black holiday unisex socks.", 
      "product_name": "Holiday Unisex Socks"
    }, 
    {
      "category_id": [
        2, 
        4
      ], 
      "id": 5, 
      "msrp": 120.0, 
      "picture": "static/images/products/5", 
      "product_description": "This is a womens watch in gold.", 
      "product_name": "Womens Watch"
    }
  ], 
  "success": true
}

GET /products/product_id

Retrieves specific product from database:

$ curl -X GET http://127.0.0.1:5000/products/2

Example Response

{
  "products": {
    "category_id": [
      2
    ], 
    "id": 2, 
    "msrp": 40.0, 
    "picture": "static/images/products/2", 
    "product_description": "This is a white wool womens sweater", 
    "product_name": "Womens Sweater"
  }, 
  "success": true
}

GET /

Redirects you to the index.html file for the frontend:

$ curl -X GET http://127.0.0.1:5000/

Example Response

This will return the `index.html` file.

Roadmap

• Frontend will be developed further using React.js
• The /search endpoint will be implemented to work with the frontend
• Since the UI and Authentication for the frontend was created using Auth0's Sample Project, a new UI/UX will be designed in the future upon further learning the React.js Framework.

Contributing

Any contributions you make are greatly appreciated.

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/AmazingFeature)
3. Commit your Changes (git commit -m 'Add some AmazingFeature')
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

License

Distributed under the Apache 2.0 License. See LICENSE for more information.

Contact

Jonathan Gutierrez - jonguti23@outlook.com

Project Link: https://github.com/jonnyg23/flask-rest-ecommerce

Acknowledgements

• E-Commerce Database Design
• GitHub Emoji Cheat Sheet
• Auth0 Guide to Authentication & Youtube link
• Auth0 Guide to Auth Github Project