Heroku Postgres and deployment
Step 16: Use the following command to install four packages for database connection and deployment.
pip install psycopg2 gunicorn django-heroku whitenoise
Step 17: Log in to your Heroku app and follow the below instructions to add Postgres to your Django application.
- Click “Create app”.
- Name your app and click save, i.e. “gfg-tutorial”
- Go to the “add-ons” section in elements or go to the new tab and search Heroku Add-ons.
- Now, you will have clickable “Heroku Postgres” which opens in a new tab. Click to install.
- Click on the Bento menu, and go to data or datastores.
- Click “view credentials” under the settings tab to fetch your connection details.
Step 18: Open “settings.py” to make the following changes.
Python3
import django_heroku DATABASES = { 'default': { 'ENGINE': 'django.db.backends.postgresql_psycopg2', 'NAME': '<DATABASE>', 'USER': '<USER>', 'PASSWORD': '<PASSWORD>', 'HOST': '<HOST>', 'PORT': '5432', } } # Optional section to include if # you want to include static files STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles') STATIC_URL = '/static/'django_heroku.settings(locals()) |
Also, modify “ALLOWED_HOSTS” as mentioned below to allow the Heroku app which we created now to host the application.
Python3
ALLOWED_HOSTS = ['gfg-tutorial.herokuapp.com'] |
Step 19: Additional files
- Create “runtime.txt” and “Procfile” in the project folder “geeks”.
- Run the following command to get all the packages listed in “requirements.txt”
pip freeze > requirements.txt
Step 20: Open “runtime.txt” and add the following code.
python-3.10.7
Step 21: Open “Procfile” and add the following code.
release: python manage.py migrate web: gunicorn geeks.wsgi
Deploying Django App on Heroku with Postgres as Backend
Django is a high-level Python web framework used to create web applications without any hassle, whereas, PostgreSQL is a powerful, open-source object-relational database. Let us first create a Django application with PostgreSQL in the backend and deploy it in Heroku which is a container-based cloud Platform to deploy, manage, and scale the applications.
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