Python Django入門 初めの1歩からWEBアプリ作成までの流れ その8 CreateViewとListView

from django.db import models
import datetime
JST = datetime.timezone(datetime.timedelta(hours=9))

# Create your models here.
class Favorite(models.Model):
    title = models.CharField('タイトル',max_length=50)
    text = models.TextField('本文')
    url = models.URLField('URL')
    created_at = models.DateTimeField('作成日', default=datetime.datetime.now(tz=JST))

    def __str__(self):
        return self.title

from django import forms
from .models import Favorite

class FavoriteForm(forms.ModelForm):
    class Meta:
        model = Favorite
        fields = "__all__"

    def __init__(self, *args, **kwargs):
        for field in self.base_fields.values():
            field.widget.attrs["class"]="form-control"
        super().__init__(*args, **kwargs)   

from django.shortcuts import render
from django.views.generic import CreateView, ListView
from .models import Favorite
from .forms import FavoriteForm
from django.urls import reverse, reverse_lazy

# Create your views here.
class FavoriteCreate(CreateView):
    template_name = 'app/favorite_create.html'
    form_class = FavoriteForm
    success_url = reverse_lazy('app:app/favorite_list')

class FavoriteList(ListView):
    template_name = 'app/favorite_list.html'
    model = Favorite

from django.contrib import admin
from django.urls import path, include

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

from django.urls import path, include
from . import views
app_name = "app"

urlpatterns = [
    path('', views.FavoriteCreate.as_view(), name='app/favorite_create'),
    path('favorite_list/', views.FavoriteList.as_view(), name='app/favorite_list'),
]

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

略

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR / 'templates'],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

略

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

<div class="container my-3 wrapper">
    <div class="text-center my-3">
        <h2>新しい日記</h2>
    </div>
    <form method="post">
        {% csrf_token %}
        {{ form.as_p }}
        <button class="btn btn-primary form-control" type="submit">登録</button>
    </form>
    <a href="{% url 'app:app/favorite_list' %}">お気に入り一覧ページ</a>
</div>

<div class="wrapper">
    <h2>お気に入り一覧</h2>
    {% for favorite in object_list %}
    <li>{{ favorite.title }}</li>
    <a href="{{ favorite.url }}">{{ favorite.url }}</a>
    {% endfor %}
</div>

from django.contrib import admin
from .models import Favorite

# Register your models here.
admin.site.register(Favorite)

# cwd : pj
python manage.py makemigrations
python manage.py migrate

# cwd : pj
python manage.py createsuperuser
# 実行結果
System check identified some issues:
Username (leave blank to use 'username'): admin # <=今回は「admin」をユーザー名に登録しました。
Email address: # <=ブランクのままエンターで大丈夫です。
Password:　# <=任意のパスワードを入力します。後程、管理画面からログインする際に必要となりますので忘れないようにご注意下さい。
Password (again):

# cwd : pj
python manage.py runserver