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OKay. So you created a Django app which uses PostgreSql as database and are now thinking to host this app. So HEROKU can be used. I know there are many tutorial especially this one. But I prefer documenting:

  • As usual create your normal app.(I did not use venv).

  • if django-toolbelt is not installed then install it

     sudo pip install django-toolbelt

  • Create a Procfile in the root directory of your project(where manage.py resides)

     touch Procfile
 cat >>Procfile
 web: gunicorn <nameOfApp>.wsgi --log-file -

    Now start the processes in your Procfile locally using Foreman.

     foreman start

    You will see something like listening on this port.

  • Specify dependencies with pip. For this use

     pip freeze > requirements.txt

    Since if you are not using venv, then this pip will perform a dependency scan on the global python packages and you will get a complete list of all the packages. For my purpose(remember a Django app with PostgreSql as database), I only require this much:

     Django==1.7.3
 psycopg2==2.5.4
 dj-database-url==0.3.0
 dj-static==0.0.6
 gunicorn==19.1.1
 static3==0.5.1
 wsgiref==0.1.2

  • Now comes the most tricky part. How to get your local database properly functioning on Heroku? i.e. How to tell Heroku that use this database with that user and password. For this you need to edit the settings.py file

     	#add this at the starting open
 	import dj_database_url
 	import os
 	BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 	STATIC_ROOT = 'staticfiles'
 	STATIC_URL = '/static/'

 	# Honor the 'X-Forwarded-Proto' header for request.is_secure()
 	SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

 	# Allow all host headers
 	ALLOWED_HOSTS = ['*']

 	STATICFILES_DIRS = (
 	os.path.join(BASE_DIR, 'static'),
 	)

 	#this after the DATABASES tuple
 	DATABASES['default'] =  dj_database_url.config()

 	#end

    Open your wsgi.py and add these lines

     from django.core.wsgi import get_wsgi_application	
 from dj_static import Cling

 application = Cling(get_wsgi_application())

  • Now Store your app in Git.

     git add .
 git commit -m "mods for heroku"

  • Deploy to Heroku

     heroku create <nameOfApp>
 git push heroku master

  • Run syncdb to create models

     heroku run python manage.py syncdb

Voila!! Now your app is there on the web. Go and have fun!.