Contacts App

Setup

Install from repo

• Based on book Hypermedia Systems by Carson Gross, Adam Stepinski, and Deniz Akşimşek; and their example app copied from bigskysoftware / contact-app
• I'm going step by step, from the original "Web 1.0" hypermedia version onwards.
• If you are working from this repo then open a system terminal and do the following (I'm on Linux Ubuntu with Python 3.8.10):

victor@victorpc:dev$ mkdir contact-app
victor@victorpc:dev$ cd contact-app
victor@victorpc:contact-app$ ls -l
total 0
victor@victorpc:contact-app$

• copy in all files from repo (except .git dir)
• add in our .vscode

victor@victorpc:contact-app$ cat .gitignore
env
.venv
__pycache__
/venv/
victor@victorpc:contact-app$

• add in our .vscode/settings.json

victor@victorpc:contact-app$ cat .vscode/settings.json
{
  "workbench.preferredDarkColorTheme": "Default Dark Modern",
  "workbench.colorTheme": "Noctis Azureus",
  "[python]": {
    "editor.defaultFormatter": "ms-python.black-formatter"
  },
  "python.formatting.provider": "none"
}

• In the terminal, do

code .

Open a terminal within VS Code to create virtual environment

victor@victorpc:contact-app$ python3 -m venv .venv

• Perform developer reload window from command palette
• now there appears a yellow warning on bash label in upper bar of terminal; hover over, and click on relaunch terminal link at bottom
• If the Terminal doesn't restart, do a Terminal / New Terminal, should see (.venv) prefix showing environment activated:
• (.venv) victor@victorpc:contact-app$

Install Flask and other dependencies

(.venv) victor@victorpc:contact-app$ pip install -r requirements.txt

Run app!

• Open app.py in the editor (recognized as python program)
• To run:
  • From menu: Run > Run without debugging
  • right button then select "Run Python file in Terminal"
  • or open another terminal and type (.venv) victor@victorpc:contact-app$ /home/victor/Work/Learn/Python/HypermediaSystemsBook/dev/contact-app/.venv/bin/python /home/victor/Work/Learn/Python/HypermediaSystemsBook/dev/contact-app/app.py
    • or simply python app.py

View in browser

• Point browser at http://127.0.0.1:5000, it redirects to http://127.0.0.1:5000/contacts and the contacts are listed on the page