建立了数据库后，我们就来做一个简单的表（person_classroom）的加入、删除、改动的操作。

首先我们建立一个加入的页面的模板Classroom_Add.html（加入的表单）并把它放在Bidding\templates\person中：

Classroom_Add.html：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">

<html>

<head>

    <title>数据库操作简单表的加入</title>

</head>

<body>

    <h1>这里是Classroom的加入页面</h1>

    {% if error %}

        <p style="color: red;">请输入班级名称和导师姓名</p>

    {% endif %}

   <form action="" method="get">

        <table border="1" cellpadding="10">

          <tr>

            <td align="center">项目</td>

            <td align="center">内容</td>

          </tr>

          <tr>

            <td align="right">班级名称：</td>

            <td><input type="text" name="name"></td>

          </tr>

          <tr>

            <td align="right">导师姓名：</td>

            <td><input type="text" name="tutor"></td>

          </tr>

          <tr>

            <td colspan="2"><input type="submit" value="加入"></td>

          </tr>

        </table>

  </form>

</body>

</html>

Classroom_Add_results.html：

<html>

<head>

    <title>查询用户结果页</title>

</head>

<body>

    <table border="1" cellpadding="5"><tr>

      <td>班级：{{name}}加入成功 ！</td></tr>

      <tr>

        <td><a href="http://127.0.0.1:8000/ClassRoom/add/">点击返回</a></td>

      </tr>

    </table>

</body>

</html>

上面的 这个文件时加入后的结果页。

然后建立相应的view，我们改动person/views.py 文件

Views.py：

# -*- coding: utf-8 -*-

from django.shortcuts import render_to_response

from django.db import connection,transaction

from person.models import *

def ClassroonAdd(request):

    if 'name' in request.GET and request.GET['name'] and 'tutor' in request.GET and request.GET['tutor']:

        name = request.GET['name']

        tutor = request.GET['tutor']

        cursor=connection.cursor()

        sql='insert into person_classroom (name,tutor) values (\''+name+'\',\''+tutor+'\')'

        cursor.execute(sql)

        transaction.commit_unless_managed()

        cursor.close()

        return render_to_response('person/Classroom_Add_results.html',

            {'name': name})

    else:

        return render_to_response('person/Classroom_Add.html', {'error': True})

在改动一下urls.py文件:

from django.conf.urls import patterns, include, url

# Uncomment the next two lines to enable the admin:

# from django.contrib import admin

# admin.autodiscover()

urlpatterns = patterns('',

    # Examples:

    # url(r'^$', 'Bidding.views.home', name='home'),

    # url(r'^Bidding/', include('Bidding.foo.urls')),

    # Uncomment the admin/doc line below to enable admin documentation:

    # url(r'^admin/doc/', include('django.contrib.admindocs.urls')),

    # Uncomment the next line to enable the admin:

    # url(r'^admin/', include(admin.site.urls)),

    url(r'^hello/$', 'Bidding.views.hello'),

    url(r'^time/$', 'Bidding.views.current_datetime'),

    url(r'^time/plus/(\d{1,2})/$', 'Bidding.views.hours_ahead'),

    url(r'^hello_base/$', 'Bidding.views.hello_base'),

    url(r'^request_test/$', 'Bidding.views.request_test'),

    url(r'^UsersSearch/$', 'Bidding.Users.views.search_form'),

    url(r'^search/$', 'Bidding.Users.views.search'),

    url(r'^ClassRoom/add/$', 'person.views.ClassroonAdd'),

)

这时我们的加入就做好了，訪问一下classroom/add这个 页面，就能够看到结果了。

watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaGVtZW5nMTk4MA==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="">

watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaGVtZW5nMTk4MA==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="">

只是上面我们所说的办法是运行一个原始的sql语句，这个方式事实上并非Django推荐的，我们能够直接使用models操作数据库的方法。改造一下ClassroomAdd这个视图：

def ClassroonAdd(request):

    if 'name' in request.GET and request.GET['name'] and 'tutor' in request.GET and request.GET['tutor']:

        name = request.GET['name']

        tutor = request.GET['tutor']

        c = ClassRoom(name=name,tutor=tutor)

        c.save()

        return render_to_response('person/Classroom_Add_results.html',

            {'name': name})

    else:

        return render_to_response('person/Classroom_Add.html', {'error': True})

这个方案即简单，有不用我们非常多sql的语法。而且最重要的是假设更换数据库类型（sqlserver->oracle）。也不会由于受sql语法不一致的影响。

在接下来，我们来做一个列表页，把数据库中的Classroom表的记录以一个表格的形式显示出来。

还是从模板先入手。建立一个Classroom_List.html，放入Bidding\templates\person目录下：

Classroom_List.html：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">

<html>

<head>

    <title>数据库操作简单表的加入</title>

</head>

<body>

    <h1>这里是Classroom的管理页面</h1>

        <table border="1" cellpadding="10">

          <tr>

            <td align="center">序号</td>

            <td align="center">班级名称</td>

            <td align="center">导师姓名</td>

          </tr>

          {% for myclass in ClassroonList%}

          <tr>

            <td align="right">{{ myclass.id }}</td>

            <td align="right">{{ myclass.name }}</td>

            <td align="right">{{ myclass.tutor }}</td>

          </tr>

          {% endfor %}

        </table>

</body>

</html>

加入视图：

# -*- coding: utf-8 -*-

from django.shortcuts import render_to_response

from django.db import connection,transaction

from person.models import *

def ClassroonAdd(request):

    if 'name' in request.GET and request.GET['name'] and 'tutor' in request.GET and request.GET['tutor']:

        name = request.GET['name']

        tutor = request.GET['tutor']

        cursor=connection.cursor()

        sql='insert into person_classroom (name,tutor) values (\''+name+'\',\''+tutor+'\')'

        cursor.execute(sql)

        transaction.commit_unless_managed()

        cursor.close()

        return render_to_response('person/Classroom_Add_results.html',

            {'name': name})

    else:

        return render_to_response('person/Classroom_Add.html', {'error': True})

def ClassroonAdd(request):

    if 'name' in request.GET and request.GET['name'] and 'tutor' in request.GET and request.GET['tutor']:

        name = request.GET['name']

        tutor = request.GET['tutor']

        c = ClassRoom(name=name,tutor=tutor)

        c.save()

        return render_to_response('person/Classroom_Add_results.html',

            {'name': name})

    else:

        return render_to_response('person/Classroom_Add.html', {'error': True})

def ClassroonList(request):

        cursor=connection.cursor()

        sql='select id,name,tutor from person_classroom'

        ClassroonList=ClassRoom.objects.raw(sql)

        return render_to_response('person/Classroom_List.html',

            {'ClassroonList': ClassroonList})

配置urls.py:

from django.conf.urls import patterns, include, url

# Uncomment the next two lines to enable the admin:

# from django.contrib import admin

# admin.autodiscover()

urlpatterns = patterns('',

    # Examples:

    # url(r'^$', 'Bidding.views.home', name='home'),

    # url(r'^Bidding/', include('Bidding.foo.urls')),

    # Uncomment the admin/doc line below to enable admin documentation:

    # url(r'^admin/doc/', include('django.contrib.admindocs.urls')),

    # Uncomment the next line to enable the admin:

    # url(r'^admin/', include(admin.site.urls)),

    url(r'^hello/$', 'Bidding.views.hello'),

    url(r'^time/$', 'Bidding.views.current_datetime'),

    url(r'^time/plus/(\d{1,2})/$', 'Bidding.views.hours_ahead'),

    url(r'^hello_base/$', 'Bidding.views.hello_base'),

    url(r'^request_test/$', 'Bidding.views.request_test'),

    url(r'^UsersSearch/$', 'Bidding.Users.views.search_form'),

    url(r'^search/$', 'Bidding.Users.views.search'),

    url(r'^ClassRoom/add/$', 'person.views.ClassroonAdd'),

    url(r'^ClassRoom/list/$', 'person.views.ClassroonList'),

)

如同上述讨论的一样，我们如今的视图运行的是一个原始的sql，如今我们须要用models来改动一下：

def ClassroonList(request):

        cursor=connection.cursor()

        ClassroonList=ClassRoom.objects.all()

        #ClassroonList=ClassRoom.objects.filter(name__icontains='大')

        return render_to_response('person/Classroom_List.html',

            {'ClassroonList': ClassroonList})

假设须要运行where或者order by等操作能够这样：

ClassroonList=ClassRoom.objects.filter(name__icontains='大').order_by(‘name’)

这里还有非常多关于选择的内容以后我们逐渐会介绍到。

做完了列表页，我们在来做一个改动的页面，思路是这种：在列表页中的每一行的后面加入一列“改动”button。点击button后跳转到改动页面。首先以此条记录的主键专递到改动页面，在改动页面中要先读取出数据库中的信息。然后点击确定button以后运行改动操作。

我们首先来改动这个管理页面的模板：

Classroom_List.html：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">

<html>

<head>

    <title>数据库操作简单表的加入</title>

</head>

<body>

    <h1>这里是Classroom的管理页面</h1>

        <table border="1" cellpadding="10">

          <tr>

            <td align="center">序号</td>

            <td align="center">班级名称</td>

            <td align="center">导师姓名</td>

            <td align="center">操作</td>

          </tr>

          {% for myclass in ClassroonList%}

          <tr>

            <td align="right">{{ myclass.id }}</td>

            <td align="right">{{ myclass.name }}</td>

            <td align="right">{{ myclass.tutor }}</td>

            <td align="right"><input type="button" onClick="Modify({{ myclass.id }})" value="改动"></td>

          </tr>

          {% endfor %}

        </table>

 <script language="javascript">

 function Modify(id)

 {

	location.href='../Modify/'+id

 }

 </script>

</body>

</html>

建立一个Classroom_Modify.html模板。把它放在Bidding\templates\person目录下

Classroom_Modify.html：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">

<html>

<head>

    <title>数据库操作简单表的改动</title>

</head>

<body>

    <h1>这里是Classroom--{{name}}的改动页面</h1>

    {% if error %}

        <p style="color: red;">请输入班级名称和导师姓名</p>

    {% endif %}

   <form action="" method="get">

        <table border="1" cellpadding="10">

          <tr>

            <td align="center">项目</td>

            <td align="center">内容</td>

          </tr>

          <tr>

            <td align="right">班级名称：</td>

            <td><input type="text" name="name" value="{{name}}"></td>

          </tr>

          <tr>

            <td align="right">导师姓名：</td>

            <td><input type="text" name="tutor" value="{{tutor}}"></td>

          </tr>

          <tr>

            <td colspan="2">

            <input type="hidden" name="id" value="{{id}}">

            <input type="submit" value="改动">

            <input type="button" value="返回" onClick="location.href='../../list'">

            </td>

          </tr>

        </table>

  </form>

</body>

</html>

Classroom_Modify_results.html：

<html>

<head>

    <title>查询用户结果页</title>

</head>

<body>

    <table border="1" cellpadding="5"><tr>

      <td align="center"> </td>

      <td align="center">改动前</td>

      <td align="center">改动后</td>

      </tr>

      <tr>

        <td align="right">班级名称：</td>

        <td align="right">{{old_name}}</td>

        <td align="right">{{new_name}}</td>

      </tr>

      <tr>

        <td align="right">导师姓名：</td>

        <td align="right">{{old_tutor}}</td>

        <td align="right">{{new_tutor}}</td>

      </tr>

      <tr>

        <td colspan="3" align="center">改动成功！</td>

      </tr>

      <tr>

        <td colspan="3" align="center"><a href="../../list/">点击返回</a></td>

      </tr>

    </table>

</body>

</html>

加入视图：

def ClassroonModify(request,id1):

    cursor=connection.cursor()

    sql='select id,name,tutor from person_classroom where id='+id1

    ClassroonList=ClassRoom.objects.raw(sql)

    old_name = ClassroonList[0].name

    old_tutor = ClassroonList[0].tutor

    if 'name' in request.GET and request.GET['name'] and 'tutor' in request.GET and request.GET['tutor']:

        new_name = request.GET['name']

        new_tutor = request.GET['tutor']

        cursor=connection.cursor()

        sql='update person_classroom set name=\''+new_name+'\',tutor=\''+new_tutor+'\' where id=\''+id1+'\''

        cursor.execute(sql)

        transaction.commit_unless_managed()

        cursor.close()

        return render_to_response('person/Classroom_Modify_results.html',

            {'old_name': old_name,'old_tutor':old_tutor,'new_name':new_name,'new_tutor':new_tutor})

    else:

        return render_to_response('person/Classroom_Modify.html', {'error': True,'id':id1,'name':old_name,'tutor':old_tutor})

编辑urls.py。这里面须要注意的是正则的写法，这个之前的章节已经说过了，这里我们能够再复习一遍：

from django.conf.urls import patterns, include, url

# Uncomment the next two lines to enable the admin:

# from django.contrib import admin

# admin.autodiscover()

urlpatterns = patterns('',

    # Examples:

    # url(r'^$', 'Bidding.views.home', name='home'),

    # url(r'^Bidding/', include('Bidding.foo.urls')),

    # Uncomment the admin/doc line below to enable admin documentation:

    # url(r'^admin/doc/', include('django.contrib.admindocs.urls')),

    # Uncomment the next line to enable the admin:

    # url(r'^admin/', include(admin.site.urls)),

    url(r'^hello/$', 'Bidding.views.hello'),

    url(r'^time/$', 'Bidding.views.current_datetime'),

    url(r'^time/plus/(\d{1,2})/$', 'Bidding.views.hours_ahead'),

    url(r'^hello_base/$', 'Bidding.views.hello_base'),

    url(r'^request_test/$', 'Bidding.views.request_test'),

    url(r'^UsersSearch/$', 'Bidding.Users.views.search_form'),

    url(r'^search/$', 'Bidding.Users.views.search'),

    url(r'^ClassRoom/add/$', 'person.views.ClassroonAdd'),

    url(r'^ClassRoom/list/$', 'person.views.ClassroonList'),

    url(r'^ClassRoom/modify/(\d+)/$', 'person.views.ClassroonModify'),

)

如同加入时候的问题，我们这里面使用的仍然是最原始的sql语句，我们相同能够给他改动成为model的方式：

def ClassroonModify(request,id1):

    cursor=connection.cursor()

    Classroon=ClassRoom.objects.get(id=id1)

    old_name = Classroon.name

    old_tutor = Classroon.tutor

    cursor.close()

    if 'name' in request.GET and request.GET['name'] and 'tutor' in request.GET and request.GET['tutor']:

        new_name = request.GET['name']

        new_tutor = request.GET['tutor']

        Classroon.name=new_name

        Classroon.tutor=new_tutor

        Classroon.save()

        return render_to_response('person/Classroom_Modify_results.html',

            {'old_name': old_name,'old_tutor':old_tutor,'new_name':new_name,'new_tutor':new_tutor})

    else:

        return render_to_response('person/Classroom_Modify.html', {'error': True,'id':id1,'name':old_name,'tutor':old_tutor})

这样看起来是不是简便多了？我们打开 页面看看效果吧 ：

接下来我们来做删除的功能，首先改动列表页的模板。增加一列删除button：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">

<html>

<head>

    <title>数据库操作简单表的加入</title>

</head>

<body>

    <h1>这里是Classroom的管理页面</h1>

        <table border="1" cellpadding="10">

          <tr>

            <td align="center">序号</td>

            <td align="center">班级名称</td>

            <td align="center">导师姓名</td>

            <td align="center">操作</td>

          </tr>

          {% for myclass in ClassroonList%}

          <tr>

            <td align="right">{{ myclass.id }}</td>

            <td align="right">{{ myclass.name }}</td>

            <td align="right">{{ myclass.tutor }}</td>

            <td align="right"><input type="button" onClick="Modify({{ myclass.id }})" value="改动">

            <input type="button" onClick="Delete({{ myclass.id }})" value="删除">

            </td>

          </tr>

          {% endfor %}

        </table>

 <script language="javascript">

 function Modify(id)

 {

	location.href='../modify/'+id

 }

 function Delete(id)

 {

	location.href='../delete/'+id

 }

 </script>

</body>

</html>

Classroom_Delete_results.html:

<html>

<head>

    <title>查询用户结果页</title>

</head>

<body>

    <table border="1" cellpadding="5"><tr>

      <td>班级：{{name}}删除成功 ！</td></tr>

      <tr>

        <td><a href="http://127.0.0.1:8000/ClassRoom/list/">点击返回</a></td>

      </tr>

    </table>

</body>

</html>

改动视图：

def ClassroonDelete(request,id1):

    cursor=connection.cursor()

    Classroon=ClassRoom.objects.get(id=id1)

    old_name = Classroon.name

    Classroon.delete()

    ClassroonList=ClassRoom.objects.all()

    cursor.close()

　　return render_to_response('person/Classroom_Delete_results.html',{'name':old_name})

配置urls.py:

from django.conf.urls import patterns, include, url

# Uncomment the next two lines to enable the admin:

# from django.contrib import admin

# admin.autodiscover()

urlpatterns = patterns('',

    # Examples:

    # url(r'^$', 'Bidding.views.home', name='home'),

    # url(r'^Bidding/', include('Bidding.foo.urls')),

    # Uncomment the admin/doc line below to enable admin documentation:

    # url(r'^admin/doc/', include('django.contrib.admindocs.urls')),

    # Uncomment the next line to enable the admin:

    # url(r'^admin/', include(admin.site.urls)),

    url(r'^hello/$', 'Bidding.views.hello'),

    url(r'^time/$', 'Bidding.views.current_datetime'),

    url(r'^time/plus/(\d{1,2})/$', 'Bidding.views.hours_ahead'),

    url(r'^hello_base/$', 'Bidding.views.hello_base'),

    url(r'^request_test/$', 'Bidding.views.request_test'),

    url(r'^UsersSearch/$', 'Bidding.Users.views.search_form'),

    url(r'^search/$', 'Bidding.Users.views.search'),

    url(r'^ClassRoom/add/$', 'person.views.ClassroonAdd'),

    url(r'^ClassRoom/list/$', 'person.views.ClassroonList'),

    url(r'^ClassRoom/modify/(\d+)/$', 'person.views.ClassroonModify'),

    url(r'^ClassRoom/delete/(\d+)/$', 'person.views.ClassroonDelete'),

)

到此，我们就做好了一个简单的表的加入、删除、改动的操作。

Python+Django+SAE系列教程13-----MySQL记录的添\删\改的更多相关文章

  1. Python+Django+SAE系列教程17-----authauth (认证与授权)系统1

    通过session,我们能够在多次浏览器请求中保持数据,接下来的部分就是用session来处理用户登录了. 当然,不能仅凭用户的一面之词,我们就相信,所以我们须要认证. 当然了,Django 也提供了 ...

  2. Python+Django+SAE系列教程12-----配置MySQL数据库

    由于SAE上支持的是Mysql,首先我们要在本地配置一个Mysql的环境 ,我在网上找到MySQL-python-1.2.4b4.win32-py2.7.exe,并双击 安装 选择典型安装 安装结束后 ...

  3. Python+Django+SAE系列教程15-----输出非HTML内容(图片/PDF)

    一个Django视图函数 必须 接受一个HttpRequest 实例作为它的第一个參数 返回一个HttpResponse 实例 从一个视图返回一个非HTML 内容的关键是在构造一个 HttpRespo ...

  4. Python+Django+SAE系列教程9-----Django的视图和URL

    第三.四.五章介绍的就是Django中MVC的视图.模板.模型了. 首先来看视图(view),在用Django生成的站点目录中,创建一个view.py文件,这个文件開始是空的.然后我们输入下面内容: ...

  5. Python+Django+SAE系列教程11-----request/pose/get/表单

    表单request,post,get 首先我们来看看Request对象,在这个对象中包括了一些实用的信息,学过B/S开发的人来说这并不陌生,我们来看看在Django中是怎样实现的: 属性/方法 说明 ...

  6. Python+Django+SAE系列教程10-----Django模板

    在本章中,我们开始模板,在前面的章节,您可能已经注意到,我们回到文本的方式有点特别的示例视图. 那.HTML直接在硬编码 Python 其中代码. 这的确是一个小BT. def current_dat ...

  7. Python+Django+SAE系列教程6-----本地配置Django

    前五章.我们介绍了Python的语法,本章開始介绍Django. Python的Web框架有非常多,有Django.web2py.tornado.web.py等.我们这里选 则Django.至于这些框 ...

  8. Python+Django+SAE系列教程16-----cookie&amp;session

    本章我们来解说cookie和session ,这两个东西相信大家一定不陌生,概念就不多讲了,我们直接来看其使用方法,首先是cookie,我们在view中加入三个视图,一个是显示cookie的,一个是设 ...

  9. Python+Django+SAE系列教程14-----使表单更安全

    还记得我们上一章提到过的加入页面吗? watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaGVtZW5nMTk4MA==/font/5a6L5L2T/fonts ...

随机推荐

  1. 559. N叉树的最大深度

    给定一个 N 叉树,找到其最大深度. 最大深度是指从根节点到最远叶子节点的最长路径上的节点总数. 例如,给定一个 3叉树 : 我们应返回其最大深度,3. 说明: 树的深度不会超过 1000. 树的节点 ...

  2. html5一些容易忽略的细节

    最近由于经常写前端,所以系统性的看了一下html5页面的基础信息,虽然以前写了很久的html代码,但是其中的一些细节还是容易被忽略,所以这里一起整理一下. 在html5中,空元素结尾处的空格和斜杠是可 ...

  3. jQuery.Validate.js验证大表单的优化

    最近在项目中有遇到一个Form表单中有200多个标签.在提交表单时网页会出现等待时间很长,甚至会出现网页奔溃的情况. 主要的原因是因为在使用jQuery.Validate.js进行Form验证的时候会 ...

  4. 竹间智能科技（Emotibot）

    竹间智能简仁贤:表情识别准确率达到81.57%,语义理解是主要的商用落地场景 北京-招聘机器学习(实习生) 深圳-招聘图像识别工程师

  5. Java中的强引用，软引用，弱引用

    作者:winterSunshine链接:https://www.zhihu.com/question/37401125/answer/100981172来源:知乎著作权归作者所有.商业转载请联系作者获 ...

  6. 2017/11/13 Leetcode 日记

    2017/11/13 Leetcode 日记 463. Island Perimeter You are given a map in form of a two-dimensional intege ...

  7. django celery(QQ蓝鲸)

    官方:http://www.celeryproject.org 文档:http://docs.jinkan.org/docs/celery/index.html FAQ:http://docs.cel ...

  8. JZYZOJ1525 HAOI2012道路 堆优化的dijkstra+pair

    From Tyvj Guest ☆[haoi2012]道路                 描述 Description     C国有n座城市,城市之间通过m条单向道路连接.一条路径被称为最短路,当 ...

  9. trie--- POJ 3764 The xor-longest Path

    The xor-longest Path Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 5453   Accepted: 1 ...

  10. 74.Interesting Sequence(有趣的数列)（拓扑排序）

    Interesting Sequence(有趣的数列)[Special judge] 题目概述:是否存在一个长度为n的整数数列,其任意连续p项之和为正数而任意连续q项之和为负数? 方法:连续项a[i] ...