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django-heroku

Minimal configuration to host a Django project at Heroku

Create the project directory

  • mkdir directory_name
  • cd directory_name

Create and activate your virtuanenv

  • virtualenv -p python3 .vEnv
  • . .vEnv/bin/activate

Installing django

  • pip install django

Create the django project

  • django-admin startproject myproject

Creating the Git repository

  • git init
  • Create a file called .gitignore with the following content:
# See the name for you IDE
.idea
# If you are using sqlite3
*.sqlite3
# Name of your virtuan env
.vEnv
*pyc
  • git add .
  • git commit -m 'First commit'

Hidding instance configuration

  • pip install python-decouple
  • create an .env file at the root path and insert the following variables
  • SECRET_KEY=Your$eCretKeyHere (Get this secrety key from the settings.py)
  • DEBUG=True

Settings.py

  • from decouple import config
  • SECRET_KEY = config('SECRET_KEY')
  • DEBUG = config('DEBUG', default=False, cast=bool)

Configuring the Data Base (You don't need that if you already had an database).

  • pip install dj-database-url

Settings.py

  • from dj_database_url import parse as dburl

default_dburl = 'sqlite:///' + os.path.join(BASE_DIR, 'db.sqlite3')

DATABASES = { 'default': config('DATABASE_URL', default=default_dburl, cast=dburl), }

Static files

pip install dj-static

wsgi

  • from dj_static import Cling
  • application = Cling(get_wsgi_application())
  • Also don't forget to check "DJANGO_SETTINGS_MODULE". It is prone to frequent mistakes.

Settings.py

  • STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')

Create a requirements-dev.txt

pip freeze > requirements-dev.txt

Create a file requirements.txt file and include reference to previows file and add two more requirements

  • -r requirements-dev.txt
  • gunicorn
  • psycopg2

Create a file Procfile and add the following code

Create a file runtime.txt and add the following core

  • python-3.6.0 (You can currently use "python-3.7.3")

Creating the app at Heroku

You should install heroku CLI tools in your computer previously ( See http://bit.ly/2jCgJYW )

  • heroku apps:create app-name (you can create by heroku it's self if you wanted.) You can also login in heroku by: heroku login Remember to grab the address of the app in this point

Setting the allowed hosts

  • include your address at the ALLOWED_HOSTS directives in settings.py - Just the domain, make sure that you will take the protocol and slashes from the string

Heroku install config plugin

  • heroku plugins:install heroku-config

Sending configs from .env to Heroku ( You have to be inside tha folther where .env files is)

  • heroku plugins:install heroku-config
  • heroku config:push -a

To show heroku configs do

  • heroku config (check this, if you fail changing by code, try changing by heroku dashboard)

Publishing the app

  • git add .
  • git commit -m 'Configuring the app'
  • git push heroku master --force (you don't need "--force")

Creating the data base (if you are using your own data base you don't need it, if was migrated there)

  • heroku run python3 manage.py migrate

Creating the Django admin user

  • heroku run python3 manage.py createsuperuser (the same as above)

EXTRAS

You may need to disable the collectstatic

  • heroku config:set DISABLE_COLLECTSTATIC=1

Also recommend set this configuration to your heroku settings

  • WEB_CONCURRENCY = 3

Changing a specific configuration

  • heroku config:set DEBUG=True

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