how to deploy django app on heroku with mongodb

1. Ensure you have the required dependencies installed:

pip install djongo dj-database-url

1. Update your requirements.txt file:

djongo==1.3.5
dj-database-url==0.5.0

1. Install Gunicorn:

pip install gunicorn

1. Update your requirements.txt file:

gunicorn==20.1.0

1. Create a Procfile in your project root:

echo "web: gunicorn your_project_name.wsgi" > Procfile

1. Install Heroku CLI and login:

# Install Heroku CLI
npm install -g heroku

# Login to Heroku
heroku login

1. Initialize a Git repository (if not already):

git init
git add .
git commit -m "Initial commit"

1. Create a Heroku app:

heroku create your-app-name

1. Set environment variables for your Django app:

heroku config:set DJANGO_SETTINGS_MODULE=your_project_name.settings

1. Configure MongoDB connection in your settings.py:

import dj_database_url

DATABASES = {
    'default': dj_database_url.config(default=os.environ.get('DATABASE_URL'))
}

1. Update ALLOWED_HOSTS in settings.py:

ALLOWED_HOSTS = ['your-app-name.herokuapp.com', 'localhost']

1. Migrate your database:

python manage.py makemigrations
python manage.py migrate

1. Add your MongoDB URI to Heroku environment variables:

heroku config:set DATABASE_URL=<your-mongodb-uri>

1. Add static files configuration:

import os

STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')

1. Update your requirements.txt file:

whitenoise==5.3.0

1. Update your middleware in settings.py:

MIDDLEWARE = [
    # ...
    'whitenoise.middleware.WhiteNoiseMiddleware',
    # ...
]

1. Collect static files:

python manage.py collectstatic

1. Commit changes to Git:

git add .
git commit -m "Configuring for Heroku deployment"

1. Push your code to Heroku:

git push heroku master

1. Open your deployed app:

heroku open

That's it! Your Django app with MongoDB should now be deployed on Heroku.