[PYTHON] Make Django's environment Docker (Docker + Django + Gunicorn + nginx) Part 3

Last time mainly describes docker-compose.yml. This time, I'll describe the settings for the Django application.

It is open to the public below. Please refer to it together with the article. Dockerize Django Environment

Initialize your Django project

Create a Django project

Execute the following command under the directory where docker-compose.yml is located.

docker-compose run web django-admin.py startproject Arbitrary project name.

After execution, the inside of the web directory (directory for Django) on the host side will be as follows.

┣web
┃ ┗ Arbitrary project name directory
┃  ┗Dockerfile
┃  ┗requirements.txt
┃  ┗manage.py

Connect to PostgreSQL

Define the connection information in the settings.py file under the project directory created in step 1.

`Arbitrary project name directory/settings.py`


# Database
# https://docs.djangoproject.com/en/1.10/ref/settings/#databases

DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.postgresql',
         'NAME': 'postgres',
         'USER': 'postgres',
         'HOST': 'postgres',
         'PORT': 5432,
     }
 }

WSGI server (application server) settings

This time, the WSGI server uses Gnicorn.
WSGI stands for Web Server Gateway Interface. As the name implies, it is a generic interface between a web server and a web application.

`Any project name/settings.py`


WSGI_APPLICATION = 'Any project name.wsgi.application'

Launch the container

Up to this point, when the settings are complete, launch the container.

docker-compose up

Create an application

Finally, we will start application development. Execute the following command to create an application.

docker-compose run web python manage.py startapp any application name

After execution, the inside of the web directory (directory for Django) on the host side will be as follows.

┣web
┃ ┗ Arbitrary project name directory/
┃  ┗Dockerfile
┃  ┗requirements.txt
┃  ┗manage.py
┃ ┗ Arbitrary application name directory/
┃  ┃  ┗__init__.py
┃  ┃  ┗admin.py
┃  ┃  ┗apps.py
┃  ┃  ┗migrations/
┃  ┃  ┃  ┗__init__.py
┃  ┃  ┗models.py
┃  ┃  ┗tests.py
┃  ┃  ┗views.py

2.admin (enable admin screen) and load static files

Make sure that ʻINSTALLED_APPS in settings.py` looks like this:

`Any arbitrary project name directory/settings.py`


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

Create a table in the database.

docker-compose exec web python manage.py migrate

Define a static file directory.

`Any arbitrary project name directory/settings.py`


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.10/howto/static-files/

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

Collect static files in the distribution directory. Execute the following command.

docker-compose run web python manage.py collectstatic --noinput

Create an admin user. Execute the following command and enter an arbitrary user name and password.

docker-compose exec -it web python manage.py createsuperuser

Open a browser and access [INDEX](http: // localhost /) and [Administration screen](http: // localhost / admin) to display it.

Outlook

Use with Django REST Framework to split screens and APIs to build microservices.

Summary

I realized that building an environment with docker does not meet the specifications of each framework and middleware. Now that you can build an environment with the combination of Docker + Django, it seems that you can proceed with the development of individual projects. As I wrote in the outlook, I would like to take on the challenge because it is an advantage of Docker that it is possible to easily configure microservices. If you find any errors in the published information, we would like to investigate and correct them if you can point them out. Thank you for your cooperation.