django中图书管理系统中的增删改查功能的代码实现

以下是一个简单的 Django 图书管理系统的增删改查功能的代码实现：

1. 增加图书：

from .models import Book

def add_book(request):
    if request.method == 'POST':
        title = request.POST['title']
        author = request.POST['author']
        publisher = request.POST['publisher']
        pub_date = request.POST['pub_date']
        book = Book(title=title, author=author, publisher=publisher, pub_date=pub_date)
        book.save()
        return redirect('book_list')
    return render(request, 'add_book.html')

2. 删除图书：

from .models import Book

def delete_book(request, book_id):
    book = Book.objects.get(id=book_id)
    book.delete()
    return redirect('book_list')

3. 修改图书：

from .models import Book

def edit_book(request, book_id):
    book = Book.objects.get(id=book_id)
    if request.method == 'POST':
        book.title = request.POST['title']
        book.author = request.POST['author']
        book.publisher = request.POST['publisher']
        book.pub_date = request.POST['pub_date']
        book.save()
        return redirect('book_list')
    return render(request, 'edit_book.html', {'book': book})

4. 查询图书：

from .models import Book

def book_list(request):
    books = Book.objects.all()
    return render(request, 'book_list.html', {'books': books})

以上是一个简单的 Django 图书管理系统的增删改查功能的代码实现。