docker -v Docker version 18.09.2, build 6247962 docker-compose -v docker-compose version 1.23.2, build 1110ad01
touch Dockerfile
FROM python:3.5
ENV PYTHONUNBUFFERED 1
RUN mkdir /code
WORKDIR /code
ADD requirements.txt /code/
RUN pip install -r requirements.txt
ADD . /code/
touch docker-compose.yml
Django>=2.1,<2.2
psycopg2
touch requirements.txt
version: '3'
services:
db:
image: postgres
web:
build: .
command: python3 manage.py runserver 0.0.0.0:8000
volumes:
- .:/code
ports:
- "8000:8000"
depends_on:
- db
docker-compose run --rm web django-admin.py startproject example .
Creating network "docker-django_default" with the default driver
Creating docker-django_db_1 ... done
Building web
Step 1/7 : FROM python:3.5
---> 2bf898387bbd
Step 2/7 : ENV PYTHONUNBUFFERED 1
---> Using cache
---> c190ee1a2a9f
Step 3/7 : RUN mkdir /code
---> Using cache
---> 56f3907454c7
Step 4/7 : WORKDIR /code
---> Using cache
---> 3b6e2f1dfff6
Step 5/7 : ADD requirements.txt /code/
---> Using cache
---> 965a1a72867b
Step 6/7 : RUN pip install -r requirements.txt
---> Using cache
---> f25a6288a90b
Step 7/7 : ADD . /code/
---> ef7287f865b8
Successfully built ef7287f865b8
Successfully tagged docker-django_web:latest
WARNING: Image for service web was built because it did not already exist. To rebuild this image you must use `docker-compose build` or `docker-compose up --build`.
docker-django
├── Dockerfile //Dockerfile：Python環境設定
├── docker-compose.yml //docker-composeファイル：WEBサーバー、DBサーバー構築
├── requirements.txt //パッケージインストールリスト
├── example //【プロジェクト】
│ ├── __init__.py //pythonスクリプトがあるディレクトリを表すまたは初期化時のimportモジュール
│ ├── __pycache__ //キャッシュ
│ ├── settings.py //★全般設定ファイル
│ ├── urls.py //★URL設定ファイル
│ └── wsgi.py //汎用API
└── manage.py //Djangoに対する様々な操作を行うためのコマンドラインユーティリティ
example/settings.py
♯28行目
#公開するドメイン名を設定（今回はワイルドカード）
ALLOWED_HOSTS = ["*"]
#76行目
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': 'postgres',
'USER': 'postgres',
'HOST': 'db',
'PORT': 5432,
}
}
docker-compose起動
docker-django_db_1 is up-to-date
Creating docker-django_web_1 ... done
Attaching to docker-django_db_1, docker-django_web_1
db_1 | The files belonging to this database system will be owned by user "postgres".
db_1 | This user must also own the server process.
db_1 |
db_1 | The database cluster will be initialized with locale "en_US.utf8".
db_1 | The default database encoding has accordingly been set to "UTF8".
db_1 | The default text search configuration will be set to "english".
db_1 |
db_1 | Data page checksums are disabled.
db_1 |
db_1 | fixing permissions on existing directory /var/lib/postgresql/data ... ok
db_1 | creating subdirectories ... ok
db_1 | selecting default max_connections ... 100
db_1 | selecting default shared_buffers ... 128MB
db_1 | selecting dynamic shared memory implementation ... posix
db_1 | creating configuration files ... ok
db_1 | running bootstrap script ... ok
db_1 | performing post-bootstrap initialization ... ok
db_1 | syncing data to disk ... ok
db_1 |
db_1 | Success. You can now start the database server using:
db_1 |
db_1 | pg_ctl -D /var/lib/postgresql/data -l logfile start
db_1 |
db_1 |
db_1 | WARNING: enabling "trust" authentication for local connections
db_1 | You can change this by editing pg_hba.conf or using the option -A, or
db_1 | --auth-local and --auth-host, the next time you run initdb.
db_1 | ****************************************************
db_1 | WARNING: No password has been set for the database.
db_1 | This will allow anyone with access to the
db_1 | Postgres port to access your database. In
db_1 | Docker's default configuration, this is
db_1 | effectively any other container on the same
db_1 | system.
db_1 |
db_1 | Use "-e POSTGRES_PASSWORD=password" to set
db_1 | it in "docker run".
db_1 | ****************************************************
db_1 | waiting for server to start....2019-06-02 15:56:02.211 UTC [42] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
db_1 | 2019-06-02 15:56:02.235 UTC [43] LOG: database system was shut down at 2019-06-02 15:56:01 UTC
db_1 | 2019-06-02 15:56:02.240 UTC [42] LOG: database system is ready to accept connections
db_1 | done
db_1 | server started
db_1 |
db_1 | /usr/local/bin/docker-entrypoint.sh: ignoring /docker-entrypoint-initdb.d/*
db_1 |
db_1 | waiting for server to shut down....2019-06-02 15:56:02.276 UTC [42] LOG: received fast shutdown request
db_1 | 2019-06-02 15:56:02.280 UTC [42] LOG: aborting any active transactions
db_1 | 2019-06-02 15:56:02.282 UTC [42] LOG: background worker "logical replication launcher" (PID 49) exited with exit code 1
db_1 | 2019-06-02 15:56:02.284 UTC [44] LOG: shutting down
db_1 | 2019-06-02 15:56:02.327 UTC [42] LOG: database system is shut down
db_1 | done
db_1 | server stopped
db_1 |
db_1 | PostgreSQL init process complete; ready for start up.
db_1 |
db_1 | 2019-06-02 15:56:02.400 UTC [1] LOG: listening on IPv4 address "0.0.0.0", port 5432
db_1 | 2019-06-02 15:56:02.400 UTC [1] LOG: listening on IPv6 address "::", port 5432
db_1 | 2019-06-02 15:56:02.412 UTC [1] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
db_1 | 2019-06-02 15:56:02.434 UTC [51] LOG: database system was shut down at 2019-06-02 15:56:02 UTC
db_1 | 2019-06-02 15:56:02.440 UTC [1] LOG: database system is ready to accept connections
web_1 | Performing system checks...
web_1 |
web_1 | System check identified no issues (0 silenced).
web_1 |
web_1 | You have 15 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
web_1 | Run 'python manage.py migrate' to apply them.
web_1 | June 02, 2019 - 16:23:32
web_1 | Django version 2.1.8, using settings 'example.settings'
web_1 | Starting development server at http://0.0.0.0:8000/
web_1 | Quit the server with CONTROL-C.
止める時は[Ctrl]+C
racefully stopping... (press Ctrl+C again to force)
Stopping docker-django_web_1 ... done
Stopping docker-django_db_1 ... done
>
docker-compose run --rm web python manage.py startapp sample
Starting docker-django_db_1 ... done
docker-django
├── Dockerfile //Dockerfile：Python環境設定
├── docker-compose.yml //docker-composeファイル：WEBサーバー、DBサーバー構築
├── requirements.txt //パッケージインストールリスト
├── example //【プロジェクト】
│ ├── __init__.py //pythonスクリプトがあるディレクトリを表すまたは初期化時のimportモジュール
│ ├── __pycache__ //キャッシュ
│ ├── settings.py //★全般設定ファイル
│ ├── urls.py //★URL設定ファイル
│ └── wsgi.py //汎用API
├── maange.py //コマンドラインユーティリティ コマンド実行時に使用する
└── sample //【アプリケーション】
├── admin.py //▲Django 管理画面モデル登録
├── apps.py //アプリケーションモジュールのロード
├── __init__.py //pythonスクリプトがあるディレクトリを表すまたは初期化時のimportモジュール
├── migrations
│ ├── 0001_initial.py //DBマイグレーションファイル
│ ├── __init__.py //pythonスクリプトがあるディレクトリを表すまたは初期化時のimportモジュール
│ └── __pycache__ //キャッシュ
├── models.py //★モデル：DBラッパークラス
sample/views.py
from django.http import HttpResponse
def index(request):
return HttpResponse("Hello world.")
sample/urls.py
from django.urls import path
from . import views
urlpatterns = [
path('', views.index, name='index'),
]
example/urls.py
from django.contrib import admin
from django.urls import include, path
urlpatterns = [
path('sample/', include('sample.urls')),
path('admin/', admin.site.urls),
]
docker-compose up //http://localhost:8000/sample/ で"hello world"表示
docker-django
├── Dockerfile #Dockerfile：Python環境設定
├── docker-compose.yml #docker-composeファイル：WEBサーバー、DBサーバー構築
├── requirements.txt #パッケージインストールリスト
├── example #【プロジェクト】
│ ├── __init__.py #pythonスクリプトがあるディレクトリを表すまたは初期化時のimportモジュール
│ ├── __pycache__ #キャッシュ
│ ├── settings.py #★★★★全般設定ファイル
│ ├── urls.py #URL設定ファイル
│ └── wsgi.py #汎用API
├── maange.py #コマンドラインユーティリティ コマンド実行時に使用する
└── sample #【アプリケーション】
├── admin.py #★★★★Django 管理画面モデル登録
├── apps.py #アプリケーションモジュールのロード
├── __init__.py #pythonスクリプトがあるディレクトリを表すまたは初期化時のimportモジュール
├── migrations #★★★★自動生成場所
│ ├── 0001_initial.py #DBマイグレーションファイル
│ ├── __init__.py #pythonスクリプトがあるディレクトリを表すまたは初期化時のimportモジュール
│ └── __pycache__ #キャッシュ
├── models.py #★★★★モデル：DBラッパークラス
sample/models.py
from django.db import models
class Question(models.Model):
question_text = models.CharField(max_length=200)
pub_date = models.DateTimeField('date published')
class Choice(models.Model):
question = models.ForeignKey(Question, on_delete=models.CASCADE)
choice_text = models.CharField(max_length=200)
votes = models.IntegerField(default=0)
example/settings.py
INSTALLED_APPS = [
'sample.apps.SampleConfig', #ここを追加
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
]
docker-compose run --rm web python manage.py makemigrations sample
Starting docker-django_db_1 ... done
Migrations for 'sample':
sample/migrations/0001_initial.py
- Create model Choice
- Create model Question
- Add field question to choice
>
docker-compose run --rm web python manage.py sqlmigrate sample 0001
Starting docker-django_db_1 ... done
BEGIN;
--
-- Create model Choice
--
CREATE TABLE "sample_choice" ("id" serial NOT NULL PRIMARY KEY, "choice_text" varchar(200) NOT NULL, "votes" integer NOT NULL);
--
-- Create model Question
--
CREATE TABLE "sample_question" ("id" serial NOT NULL PRIMARY KEY, "question_text" varchar(200) NOT NULL, "pub_date" timestamp with time zone NOT NULL);
--
-- Add field question to choice
--
ALTER TABLE "sample_choice" ADD COLUMN "question_id" integer NOT NULL;
CREATE INDEX "sample_choice_question_id_1e820721" ON "sample_choice" ("question_id");
ALTER TABLE "sample_choice" ADD CONSTRAINT "sample_choice_question_id_1e820721_fk_sample_question_id" FOREIGN KEY ("question_id") REFERENCES "sample_question" ("id") DEFERRABLE INITIALLY DEFERRED;COMMIT;
docker-compose run --rm web python manage.py migrate
Starting docker-django_db_1 ... done
Operations to perform:
Apply all migrations: admin, auth, contenttypes, sample, sessions
Running migrations:
Applying contenttypes.0001_initial... OK
Applying auth.0001_initial... OK
Applying admin.0001_initial... OK
Applying admin.0002_logentry_remove_auto_add... OK
Applying admin.0003_logentry_add_action_flag_choices... OK
Applying contenttypes.0002_remove_content_type_name... OK
Applying auth.0002_alter_permission_name_max_length... OK
Applying auth.0003_alter_user_email_max_length... OK
Applying auth.0004_alter_user_username_opts... OK
Applying auth.0005_alter_user_last_login_null... OK
Applying auth.0006_require_contenttypes_0002... OK
Applying auth.0007_alter_validators_add_error_messages... OK
Applying auth.0008_alter_user_username_max_length... OK
Applying auth.0009_alter_user_last_name_max_length... OK
Applying sample.0001_initial... OK
Applying sessions.0001_initial... OK
docker-compose run --rm web python manage.py createsuperuser
Starting docker-django_db_1 ... done
Username (leave blank to use 'root'): admin
Email address: admin@example.com
Password:
Password (again):
Superuser created successfully.
sample/admin.py
from django.contrib import admin
from .models import Question
from .models import Choice
admin.site.register(Question)
admin.site.register(Choice)
docker-django
├── Dockerfile #Dockerfile：Python環境設定
├── docker-compose.yml #docker-composeファイル：WEBサーバー、DBサーバー構築
├── requirements.txt #パッケージインストールリスト
├── example #【プロジェクト】
│ ├── __init__.py #pythonスクリプトがあるディレクトリを表すまたは初期化時のimportモジュール
│ ├── __pycache__ #キャッシュ
│ ├── settings.py #全般設定ファイル
│ ├── urls.py #URL設定ファイル
│ └── wsgi.py #汎用API
├── manange.py #コマンドラインユーティリティ コマンド実行時に使用する
└── sample #【アプリケーション】
├── admin.py #Django 管理画面モデル登録
├── apps.py #アプリケーションモジュールのロード
├── __init__.py #pythonスクリプトがあるディレクトリを表すまたは初期化時のimportモジュール
├── migrations #自動生成場所
│ ├── 0001_initial.py #DBマイグレーションファイル
│ ├── __init__.py #pythonスクリプトがあるディレクトリを表すまたは初期化時のimportモジュール
│ └── __pycache__ #キャッシュ
├── models.py #モデル：DBラッパークラス
├── __pycache__ #キャッシュ
├── tests.py #アプリケーションのテストを書く場所
├── templates #テンプレートエンジン
│ └── sample #テンプレート
│ ├── index.html #★★★★ 一覧画面
│ ├── detail.html #★★★★ 詳細画面
│ └── results.html #★★★★ 結果画面
├── urls.py #★★★★URLの設定ファイル
└── views.py #★★★★ビュー：HTTPレスポンスやりとり
sample/templates/sample/index.html
{% if latest_question_list %}
<ul>
{% for question in latest_question_list %}
<li><a href="{% url 'sample:detail' question.id %}">{{ question.question_text }}</a></li>
{% endfor %}
</ul>
{% else %}
<p>No sample are available.</p>
{% endif %}
sample/templates/sample/detail.html
<h1>{{ question.question_text }}</h1>
{% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %}
<form action="{% url 'sample:vote' question.id %}" method="post">
{% csrf_token %}
{% for choice in question.choice_set.all %}
<input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}">
<label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br>
{% endfor %}
<input type="submit" value="Vote">
</form>
sample/templates/sample/results.html
<h1>{{ question.question_text }}</h1>
<ul>
{% for choice in question.choice_set.all %}
<li>{{ choice.choice_text }} -- {{ choice.votes }} vote{{ choice.votes|pluralize }}</li>
{% endfor %}
</ul>
<a href="{% url 'sample:detail' question.id %}">Vote again?</a>
sample/views.py
from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import get_object_or_404, render
from django.urls import reverse
from django.views import generic
from .models import Choice, Question
class IndexView(generic.ListView):
template_name = 'sample/index.html'
context_object_name = 'latest_question_list'
def get_queryset(self):
"""Return the last five published questions."""
return Question.objects.order_by('-pub_date')[:5]
class DetailView(generic.DetailView):
model = Question
template_name = 'sample/detail.html'
class ResultsView(generic.DetailView):
model = Question
template_name = 'sample/results.html'
def vote(request, question_id):
question = get_object_or_404(Question, pk=question_id)
try:
selected_choice = question.choice_set.get(pk=request.POST['choice'])
except (KeyError, Choice.DoesNotExist):
# Redisplay the question voting form.
return render(request, 'sample/detail.html', {
'question': question,
'error_message': "You didn't select a choice.",
})
else:
selected_choice.votes += 1
selected_choice.save()
return HttpResponseRedirect(reverse('sample:results', args=(question.id,)))
sample/urls.py
from django.urls import path
from . import views
app_name = 'sample'
urlpatterns = [
path('', views.IndexView.as_view(), name='index'),
path('<int:pk>/', views.DetailView.as_view(), name='detail'),
path('<int:pk>/results/', views.ResultsView.as_view(), name='results'),
path('<int:question_id>/vote/', views.vote, name='vote'),
]