Lack of instructions for MySQL connection configuration

[NanaXiong00]

Describe the issue:
Follow the steps of README.md, after running flask run --reload, open http://127.0.0.1:5000/ and clicking post a venue, the web page displays "Sorry...".

Repro Steps:

• windows

1. Download the project starter code locally.
2. Initialize and activate a virtualenv using:

pip install virtualenv
python -m virtualenv venv
venv/Scripts/activate

3. Install the dependencies

pip install -r requirements.txt

4. Run the development server:

setx FLASK_APP app.py
setx FLASK_ENV development
setx FLASK_DEBUG true
flask run --reload

5. Verify on the Browser: open http://127.0.0.1:5000/ and click post a venue.

• codespaces

1. open codespaces.
2. Initialize and activate a virtualenv using:

python -m virtualenv venv
source venv/bin/activate

3. Install the dependencies

pip install -r requirements.txt

5. Run the development server:

export FLASK_APP=app.py
export FLASK_ENV=development
export FLASK_DEBUG=true
flask run --reload

6.Verify on the Browser: open http://127.0.0.1:5000/ and click post a venue.

Suggestion:
In the fourth step of Local Development, add instructions about “MySQL connection configuration” before Flask run --reload.
For example:

• Add MySQL connection configuration to the environment.

export AZURE_MYSQL_USER=
export AZURE_MYSQL_PASSWORD=
export AZURE_MYSQL_HOST=
export AZURE_MYSQL_NAME=
export DEPLOYMENT_LOCATION=azure

• And in windows, add configuration using:

setx AZURE_MYSQL_USER user
setx AZURE_MYSQL_PASSWORD password
setx AZURE_MYSQL_HOST host
setx AZURE_MYSQL_NAME dbname
setx DEPLOYMENT_LOCATION azure

@john0isaac and @hemarina for notification.

[john0isaac]

I'm actually thinking of adding a dedicated heading for the DB as I intentionally didn't include these instructions because of a feature I implemented to make the website work without a database.

adding these instructions defeats the purpose of making the website able to work without a DB so, I will make it as an extra step if you want if not it will still work locally.