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。

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