Django アプリ開発

---

Pythonのフレームワーク「Django」で簡単なアプリを作成してみる

• 公式：https://docs.djangoproject.com/ja/2.2/intro/tutorial01/
• Qiita:[Python] Djangoチュートリアル - 汎用業務Webアプリを最速で作る

プロジェクトの作成&初回起動確認

$ docker-compose run web django-admin startproject project
Starting django_db_1 ... done
$ tree mysite
.(project)
├── Dockerfile
├── docker-compose.yml
├── manage.py
├── mysite(app)
│   ├── __init__.py
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
└── requirements.txt
$ docker-compose up

アプリの作成

$ docker-compose run web python manage.py startapp polls
.
├── Dockerfile
├── db.sqlite3
├── docker-compose.yml
├── manage.py
├── mysite
│   ├── __init__.py
│   ├── __pycache__
│   │   ├── __init__.cpython-37.pyc
│   │   ├── settings.cpython-37.pyc
│   │   ├── urls.cpython-37.pyc
│   │   └── wsgi.cpython-37.pyc
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
├── polls(new app)
│   ├── __init__.py
│   ├── admin.py
│   ├── apps.py
│   ├── migrations
│   │   └── __init__.py
│   ├── models.py
│   ├── tests.py
│   └── views.py
└── requirements.txt
$ docker-compose run web pip install django django-crispy-forms django-filter
$ docker-compose run web python manage.py startapp app

Viewの追加

• polls.view.py

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

ルーティングの追加

• polls/urls.py：プロジェクトにルーティングを追加する

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

ルーティングを追加

• プロジェクトにルーティングを追加する

• mysite/urls.py

  """mysite URL Configuration
  
  The `urlpatterns` list routes URLs to views. For more information please see:
  https://docs.djangoproject.com/en/2.2/topics/http/urls/
  Examples:
  Function views
  1. Add an import:  from my_app import views
  2. Add a URL to urlpatterns:  path('', views.home, name='home')
  Class-based views
  1. Add an import:  from other_app.views import Home
  2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
  Including another URLconf
  1. Import the include() function: from django.urls import include, path
  2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
  """
  from django.contrib import admin
  from django.urls import include, path
  
  urlpatterns = [
  path('polls/', include('polls.urls')),
  path('admin/', admin.site.urls),
  ]
  

localhost:8000/pollsで確認できる