sheetalkashid / django-heroku

Tutorial for deploy with django on heroku

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 (OBS: Atenção pois não deve haver espaço entre o sinal de igual)

Settings.py

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

Configuring the Data Base

• 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())

Settings.py

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

Extra places for collectstatic to find static files.

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

• STATIC_URL = '/static/'

• STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesStorage'

Create a requirements-dev.txt

pip freeze > requirements-dev.txt

*obs:Retirar gunicorn e psycopg2==2.7.4

Instalar o Whitenoise como indicado no link abaixo devido a problemas com arquivos estáticos

• https://devcenter.heroku.com/articles/django-assets
• Instalar o whitenoise==3.3.1 e incluir no Settings.py

*STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesStorage'

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

• -r requirements-dev.txt
• gunicorn
• psycopg2 (Obs: Este deve estar instalado na máquina antes de gerar o requirements.txt)

Create a file Procfile and add the following code

• web: gunicorn nome_da_aplicacao.wsgi --log-file - EX: web: gunicorn gestao_clientes.wsgi --log-file -

Senão um erro ocorrerá no log do Heroku: ModuleNotFoundError: No module named 'website'

Create a file runtime.txt and add the following core

• python-3.6.0

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 (app-name = nome da aplicação DNS)
• Copiar os https gerados no Terminal para futura oportunidade https://app-name.herokuapp.com/ | https://git.heroku.com/app-name.git

Setting the allowed hosts

• Inclua seu endereço nas diretivas ALLOWED_HOSTS em settings.py - Apenas o domínio, certifique-se de retirar o protocolo https://

• EX in settings.py :ALLOWED_HOSTS = ['domain.herokuapp.com']

• OBS: em DEV coloque no settings assim sempre que for desenvolver depois do deploy:

• ALLOWED_HOSTS = ['nome-da-app.herokuapp.com', 'localhost', '127.0.0.1']

• OBS: Sempre em DEV coloque o .env DEBUG=True e no Heroku altere para False pois em DEV ocorre o erro de BAD REQUEST 500 ()

Heroku install config plugin

• heroku plugins:install heroku-config

Sending configs from .env to Heroku ( Este aquivo .env deve estar no diretório raiz do projeto)

• heroku config:push

To show heroku configs do

• heroku config

Publishing the app

• git add .

• git commit -m 'Configuring the app'

• OBS: Faça o Deploy com o Debug=True no .env pois senão recebera'o erro abaixo:

• git push heroku master --force

• Collectstatic error while deploying Django app to Heroku

• Error while running '$ python manage.py collectstatic --noinput'. in heroku

• solução: $ heroku config:set DISABLE_COLLECTSTATIC=1

Creating the data base

• heroku run python3 manage.py migrate

Creating the Django admin user

• heroku run python3 manage.py createsuperuser

EXTRAS

You may need to disable the collectstatic

• heroku config:set DISABLE_COLLECTSTATIC=1

Changing a specific configuration

• heroku config:set DEBUG=True