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UpdateView是Django中的一个通用视图，用于处理对象的更新操作。它允许用户更新一个已经存在的对象。UpdateView通常与一个模型表单一起使用，这样用户就可以看到当前对象的值，并可以修改它们。
1，添加视图
Test/app3/views.py
from django.shortcuts import render# Create your views here.
from .models import Bookfrom django.views.generic import ListView
class BookListView(ListView):model = Bookcontext_object_name = 'books'template_name = 'books/book_list.html'paginate_by = 10 # 设置展示页数数据from django.views.generic import DetailView
class BookDetailView(DetailView):model = Bookcontext_object_name = 'book'template_name = 'books/book_detail.html'from django.views.generic.edit import CreateView
class BookCreateView(CreateView):model = Booktemplate_name = 'books/book_form.html'fields = ['title', 'author', 'publication_date']success_url = '/app3/books/' # 重定向至书本列表路由地址from django.urls import reverse_lazy
from django.views.generic.edit import UpdateView
class BookUpdateView(UpdateView):model = Bookfields = ['title', 'author', 'publication_date']template_name = 'books/book_edit.html'success_url = reverse_lazy('book_list')
2，添加路由地址
Test/app3/urls.py
from django.urls import path
from . import viewsfrom .views import BookListView
from .views import BookDetailView
from .views import BookCreateView
from .views import BookUpdateViewurlpatterns = [path('books/', BookListView.as_view(), name='book_list'),path('books/<int:pk>/', BookDetailView.as_view(), name='book_detail'),path('books/new/', BookCreateView.as_view(), name='book_new'),path('books/<int:pk>/edit/', BookUpdateView.as_view(), name='BookUpdateView'),]
3，添加html代码
Test/templates/books/book_edit.html
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body><form method="POST">{% csrf_token %}{{ form.as_p }}<button type="submit">更新</button>
</form></body>
</html>
4，访问页面
Test/templates/books/book_edit.html
http://127.0.0.1:8000/app3/books/1/edit/
