1.
Django
Akira Nonaka
2018.06.16 • OSC Okinawa

2.
About Me
• XOXZO( )
• Python

3.
About XOXZO
• API
• SMS &
• Web Django

4.
Contents
1. Django
2.
3. Django
4.

5.
$ python --version
Python 3.6.0
$ python -m venv myvenv
$ source myvenv/bin/activate
(myvenv) $ pip install django
Collecting django…

6.
$ pip list
Package Version
---------- -------
Django 2.0.6
pip 10.0.1
pytz 2018.4
setuptools 28.8.0

7.
$ django-admin startproject mysite
$ tree mysite/
mysite/
!"" manage.py
#"" mysite
!"" __init__.py
!"" settings.py
!"" urls.py
#"" wsgi.py

8.
$ cat manage.py
#!/usr/bin/env python
import os
import sys
if __name__ == "__main__":
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings")
try:
from django.core.management import execute_from_command_line
except ImportError as exc:
raise ImportError(
"Couldn't import Django. Are you sure it's installed and "
"available on your PYTHONPATH environment variable? Did you "
"forget to activate a virtual environment?"
) from exc
execute_from_command_line(sys.argv)

9.
$ ./manage.py runserver
Performing system checks...
System check identified no issues (0 silenced).
You have 14 unapplied migration(s). Your project may not work properly until you
apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python manage.py migrate' to apply them.
June 10, 2018 - 08:07:07
Django version 2.0.6, using settings 'mysite.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
[10/Jun/2018 08:07:44] "GET / HTTP/1.1" 200 16348
[10/Jun/2018 08:07:44] "GET /static/admin/css/fonts.css HTTP/1.1" 200 423
[10/Jun/2018 08:07:44] "GET /static/admin/fonts/Roboto-Light-webfont.woff HTTP/
1.1" 200 81348
[10/Jun/2018 08:07:44] "GET /static/admin/fonts/Roboto-Regular-webfont.woff

10.
ROOT_URLCONF = 'mysite.urls'

11.
$ cat mysite/urls.py
"""mysite URL Configuration
( …)
"""
from django.contrib import admin
from django.urls import path
urlpatterns = [
path('admin/', admin.site.urls),
]

12.

13.
# Database
# https://docs.djangoproject.com/en/2.0/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
}

14.
$ ./manage.py startapp polls
$ tree polls/
polls/
!"" __init__.py
!"" admin.py
!"" apps.py
!"" migrations
$ #"" __init__.py
!"" models.py
!"" tests.py
#"" views.py

15.
urlpatterns = [
path('polls/', include('polls.urls')),
path('admin/', admin.site.urls),
]

16.
from django.urls import path
from . import views
urlpatterns = [
path('', views.index, name='index'),
]

17.
from django.http import HttpResponse
def index(request):
return HttpResponse("Hello, Okinawa.
You're at the polls index.")

18.

19.
$ ./manage.py makemigrations
Migrations for 'polls':
polls/migrations/0001_initial.py
- Create model Question

20.
$ ./manage.py migrate
Operations to perform:
Apply all migrations: admin, auth,
contenttypes, polls, sessions
Running migrations:
Applying polls.0001_initial... OK

21.
class Migration(migrations.Migration):
initial = True
dependencies = [
]
operations = [
migrations.CreateModel(
name='Question',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False,
verbose_name='ID')),
('question_text', models.CharField(max_length=200)),
('pub_date', models.DateTimeField(verbose_name='date published')),
],
),
]

22.