回答編集履歴
4
回答を修正
test
CHANGED
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@@ -50,21 +50,29 @@
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if pk:
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id = int(pk)
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ctx['current_book'] = get_object_or_404(Book, pk=int(id))
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except ValueError:
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return HttpResponseBadRequest()
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else:
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ctx['current_book'] = ctx['object_list'].first()
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return ctx
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def get(self, request, *args, **kwargs):
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pk = self.request.GET.get('pk', None)
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if pk:
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try:
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_ = int(pk)
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except ValueError:
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return HttpResponseBadRequest()
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return super().get(request, *args, **kwargs)
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3
サンプルの改善
test
CHANGED
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@@ -42,21 +42,27 @@
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model = Book
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def get_context_data(self, **kwargs):
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ctx = super().get_context_data(**kwargs)
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pk = self.request.GET.get('pk', None)
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if pk
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if pk:
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try:
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id = int(pk)
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ctx['current_book'] = get_object_or_404(Book, pk=
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ctx['current_book'] = get_object_or_404(Book, pk=id)
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except ValueError:
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return HttpResponseBadRequest()
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else:
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ctx['current_book'] = ctx['object_list'].first()
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return ctx
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2
サンプルの修正
test
CHANGED
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@@ -68,7 +68,7 @@
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urlpatterns = [
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path('', BookList.as_view, name='book-list'),
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path('', BookList.as_view(), name='book-list'),
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]
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1
サンプルを追加
test
CHANGED
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@@ -7,3 +7,113 @@
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アプリ固有の仕様を満たすビューは、ListViewやDetailViewを上記で提示したようにカスタマイズするか、TempleteViewで実装します。
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（ミスがあるかもしれませんが・・・）下記のように実装すれば、下に示したURLで詳細とリストが表示されるはずです。
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URL: http://127.0.0.1:8000/books/?pk=1
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```python
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# in books/models.py
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from django.db import models
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class Book(models.Model):
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title = models.CharField(max_length=80)
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# in books/views.py
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from django.views import generic
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from django.http.response import HttpResponseBadRequest
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from django.shortcuts import get_object_or_404
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from .models import Book
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class BookList(generic.ListView):
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model = Book
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def get_context_data(self, **kwargs):
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"""GETパラメーターのpkをidに持つBookが存在しな場合は404"""
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pk = self.request.GET.get('pk', None)
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if pk is None:
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return HttpResponseBadRequest()
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ctx = super().get_context_data(**kwargs)
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ctx['current_book'] = get_object_or_404(Book, pk=pk)
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return ctx
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# in books/urls.py
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from .views import BookList
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urlpatterns = [
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path('', BookList.as_view, name='book-list'),
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]
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# in <project>/urls.py
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from django.urls import path, include
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urlpatterns = [
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path('books/',include("books.urls")),
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]
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```
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```html
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# in books/templates/books/book_list.html
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<html>
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<body>
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<div>{{ current_book.title }}</div>
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<div>
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<table>
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{% for book in object_list %}
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<tr><td>{{ book.title }}</td></tr>
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{% endfor }
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</table>
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</div>
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</body>
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</html>
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```
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