app01/views.py
from django.shortcuts import render,HttpResponse,redirect
# Create your views here.
from app01.models import Book
#添加书籍
def addbook(request):
if request.method=='POST':
title = request.POST.get('title')
price = request.POST.get('price')
date = request.POST.get('date')
publish = request.POST.get('publish')
print(title,price,date,publish)
book_obj=Book.objects.create(title=title,price=price,pub_date=date,publish=publish)
return redirect('/books/')
return render(request,'addbook.html')
# def addbook_test(request):
# book_obj = Book.objects.create(title="python葵花宝典", price=100, publish="苹果出版社", pub_date="2012-12-12")
# return redirect('/books/')
def books(request):
book_list=Book.objects.all()
return render(request,'books.html',locals())
def delbook(request,id):
Book.objects.filter(id=id).delete()
#重定向
return redirect('/books/')
def changebook(request,id):
book_obj=Book.objects.filter(id=id).first()
if request.method=='POST':
title = request.POST.get('title')
price = request.POST.get('price')
date = request.POST.get('date')
publish = request.POST.get('publish')
print(title,price,date,publish)
Book.objects.filter(id=id).update(title=title,price=price,pub_date=date,publish=publish)
return redirect('/books/')
return render(request,'changebook.html',{'book_obj':book_obj})
book/books.py
"""book URL Configuration
The `urlpatterns` list routes URLs to views. For more information please see:
https://docs.djangoproject.com/en/2.1/topics/http/urls/
Examples:
Function views
1. Add an import: from my_app import views
2. Add a URL to urlpatterns: path('', views.home, name='home')
Class-based views
1. Add an import: from other_app.views import Home
2. Add a URL to urlpatterns: path('', Home.as_view(), name='home')
Including another URLconf
1. Import the include() function: from django.urls import include, path
2. Add a URL to urlpatterns: path('blog/', include('blog.urls'))
"""
from django.contrib import admin
from django.urls import path,re_path
from app01 import views
urlpatterns = [
path('admin/', admin.site.urls),
path('addbook/',views.addbook),
path('books/',views.books),
path('addbook_test/',views.addbook),
re_path(r'books/(\d+)/delete',views.delbook),
re_path(r'books/(\d+)/change',views.changebook),
]
books.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="/static/bs/css/bootstrap.css">
<style>
.container{
margin-top: 100px;
}
.btn{
margin-top: 10px;
}
</style>
</head>
<body>
<h3 align="center">查看书籍</h3>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<a href="/addbook/" class="btn btn-primary">添加书籍</a>
<table class="table table-striped table-bordered">
<thead>
<tr>
<th>书籍名称</th>
<th>价格</th>
<th>出版日期</th>
<th>出版社</th>
<th>编辑操作</th>
<th>删除操作</th>
</tr>
</thead>
<tbody>
{% for book in book_list %}
<tr>
<td>{{ book.title }}</td>
<td>{{ book.price }}</td>
<td>{{ book.pub_date|date:'Y-m-d' }}</td>
<td>{{ book.publish }}</td>
<td><a href="/books/{{ book.pk }}/change" class="btn btn-info">编辑</a></td>
<td><a href="/books/{{ book.pk }}/delete" class="btn btn-danger">删除</a></td>
</tr>
{% endfor %}
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>
addbooks.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>addbook</title>
<link rel="stylesheet" href="/static/bs/css/bootstrap.css">
<style>
.container{
margin-top: 100px;
}
.btn{
margin-top:10px;
}
</style>
</head>
<body>
<h3 align="center">添加书籍</h3>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<form action="" method="post">
{% csrf_token %}
<div>
<label for="">书籍名称</label>
<input type="text" class="form-control" name="title">
</div>
<div>
<label for="">价格</label>
<input type="text" class="form-control" name="price">
</div>
<div>
<label for="">出版日期</label>
<input type="date" class="form-control" name="date">
</div>
<div>
<label for="">出版社</label>
<input type="text" class="form-control" name="publish">
</div>
<input type="submit" class="btn btn-success pull-right" >
</form>
</div>
</div>
</div>
</body>
</html>
changebooks.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="/static/bs/css/bootstrap.css">
<style>
.container{
margin-top: 100px;
}
.btn{
margin-top: 10px;
}
</style>
</head>
<body>
<h3 align="center">编辑书籍</h3>
<div class="container">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<form action="" method="post">
{% csrf_token %}
<div>
<label for="">书籍名称</label>
<input type="text" class="form-control" name="title" value="{{ book_obj.title }}">
</div>
<div>
<label for="">价格</label>
<input type="text" class="form-control" name="price" value="{{ book_obj.price }}">
</div>
<div>
<label for="">出版日期</label>
<input type="date" class="form-control" name="date" value="{{ book_obj.pub_date|date:'Y-m-d' }}">
</div>
<div>
<label for="">出版社</label>
<input type="text" class="form-control" name="publish" value="{{ book_obj.publish }}">
</div>
<input type="submit" class="btn btn-success pull-right">
</form>
</div>
</div>
</div>
</body>
</html>
至此，简单的图书管理系统完结。
后台与前端交互的数据统一通过‘’request‘’获取，其实是对用户请求的一个解析，不管是添加书籍，还是删除或者编辑，也都是同理，由此延伸在多表查询，一对多，多对多等，均是同样的道理。
