4.切换到项目目录，修改该目录下的urls.py文件，对应用中设定的URL进行合并。

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c8" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">(venv) $ vim oa/urls.py
from django.contrib import admin
from django.urls import path, include

urlpatterns = [
path('admin/', admin.site.urls),
path('hrs/', include('hrs.urls')),
]</pre>

5.重新运行项目，并打开浏览器中访问http://localhost:8000/hrs。

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c11" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ python manage.py runserver</pre>

6.修改views.py生成动态内容

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c14" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ vim hrs/views.py
from io import StringIO

from django.http import HttpResponse

depts_list = [
{'no': 10, 'name': '财务部', 'location': '北京'},
{'no': 20, 'name': '研发部', 'location': '成都'},
{'no': 30, 'name': '销售部', 'location': '上海'},
]

def index(request):
output = StringIO()
output.write('<html>\n')
output.write('<head>\n')
output.write('\t<meta charset="utf-8">\n')
output.write('\t<title>首页</title>')
output.write('</head>\n')
output.write('<body>\n')
output.write('\t<h1>部门信息</h1>\n')
output.write('\t

\n')
output.write('\t<table>\n')
output.write('\t\t<tr>\n')
output.write('\t\t\t<th width=120>部门编号</th>\n')
output.write('\t\t\t<th width=180>部门名称</th>\n')
output.write('\t\t\t<th width=180>所在地</th>\n')
output.write('\t\t</tr>\n')
for dept in depts_list:
output.write('\t\t<tr>\n')
output.write(f'\t\t\t<td align=center>{dept["no"]}</td>\n')
output.write(f'\t\t\t<td align=center>{dept["name"]}</td>\n')
output.write(f'\t\t\t<td align=center>{dept["location"]}</td>\n')
output.write('\t\t</tr>\n')
output.write('\t</table>\n')
output.write('</body>\n')
output.write('</html>\n')
return HttpResponse(output.getvalue())</pre>

7.刷新页面查看程序的运行结果。

使用视图模板

1.先回到manage.py文件所在的目录创建名为templates文件夹。

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c22" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ mkdir templates</pre>

2.创建模板页index.html。{{ greeting }}这样的模板占位符语法，也使用了{% for %}这样的模板指令，这些都是Django模板语言（DTL）的一部分

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c25" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv) $touch templates/index.html (venv)$ vim templates/index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>首页</title>
</head>
<body>
<h1>部门信息</h1>

<table>
<tr>
<th>部门编号</th>
<th>部门名称</th>
<th>所在地</th>
</tr>
{% for dept in depts_list %}
<tr>
<td>{{ dept.no }}</td>
<td>{{ dept.name }}</td>
<td>{{ dept.location }}</td>
<tr>
{% endfor %}
</table>
</body>
</html></pre>

3.回到应用目录，修改views.py文件。

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c28" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ vim hrs/views.py
from django.shortcuts import render

depts_list = [
{'no': 10, 'name': '财务部', 'location': '北京'},
{'no': 20, 'name': '研发部', 'location': '成都'},
{'no': 30, 'name': '销售部', 'location': '上海'},
]

def index(request):
return render(request, 'index.html', {'depts_list': depts_list})</pre>

4.切换到项目目录修改settings.py文件。让views.py中的render函数找到模板文件index.html

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c31" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ vim oa/settings.py

此处省略上面的内容

TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [os.path.join(BASE_DIR, 'templates')],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]

此处省略下面的内容</pre>

5.重新运行项目或直接刷新页面查看结果。

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c34" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ python manage.py runserver</pre>

配置关系型数据库MySQL

1.修改项目的settings.py文件，应用hrs添加已安装的项目中

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c40" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'hrs',
]

DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'oa',
'HOST': 'localhost',
'PORT': 3306,
'USER': 'root',
'PASSWORD': '123456',
}
}</pre>

2.安装MySQL客户端工具

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c43" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ pip install pymysql</pre>

使用Python 3需要修改项目的__init__.py文件

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c46" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
import pymysql

pymysql.install_as_MySQLdb()</pre>

3.运行manage.py并指定migrate参数实现数据库迁移，先启动MySQL数据库服务器并创建名为oa的数据库

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c49" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
drop database if exists oa;
create database oa default charset utf8;
(venv) $cd .. (venv)$ python manage.py migrate
Operations to perform:
Apply all migrations: admin, auth, contenttypes, sessions
Running migrations:
Applying contenttypes.0001_initial... OK
Applying auth.0001_initial... OK
Applying admin.0001_initial... OK
Applying admin.0002_logentry_remove_auto_add... OK
Applying contenttypes.0002_remove_content_type_name... OK
Applying auth.0002_alter_permission_name_max_length... OK
Applying auth.0003_alter_user_email_max_length... OK
Applying auth.0004_alter_user_username_opts... OK
Applying auth.0005_alter_user_last_login_null... OK
Applying auth.0006_require_contenttypes_0002... OK
Applying auth.0007_alter_validators_add_error_messages... OK
Applying auth.0008_alter_user_username_max_length... OK
Applying auth.0009_alter_user_last_name_max_length... OK
Applying sessions.0001_initial... OK</pre>

4.创建自己的数据模型。在models.py中

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c54" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ vim hrs/models.py
from django.db import models

class Dept(models.Model):
"""部门类"""

no = models.IntegerField(primary_key=True, db_column='dno', verbose_name='部门编号')
name = models.CharField(max_length=20, db_column='dname', verbose_name='部门名称')
location = models.CharField(max_length=10, db_column='dloc', verbose_name='部门所在地')

class Meta:
db_table = 'tb_dept'

class Emp(models.Model):
"""员工类"""

no = models.IntegerField(primary_key=True, db_column='eno', verbose_name='员工编号')
name = models.CharField(max_length=20, db_column='ename', verbose_name='员工姓名')
job = models.CharField(max_length=10, verbose_name='职位')

自参照完整性多对一外键关联

mgr = models.ForeignKey('self', on_delete=models.SET_NULL, null=True, blank=True, verbose_name='主管编号')
sal = models.DecimalField(max_digits=7, decimal_places=2, verbose_name='月薪')
comm = models.DecimalField(max_digits=7, decimal_places=2, null=True, blank=True, verbose_name='补贴')

多对一外键关联

dept = models.ForeignKey(Dept, db_column='dno', on_delete=models.PROTECT, verbose_name='所在部门')

class Meta:
db_table = 'tb_emp'</pre>

5.通过模型创建数据表。

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c57" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ python manage.py makemigrations hrs
Migrations for 'hrs':
hrs/migrations/0001_initial.py

Create model Dept
Create model Emp
(venv)$ python manage.py migrate
Operations to perform:
Apply all migrations: admin, auth, contenttypes, hrs, sessions
Running migrations:
Applying hrs.0001_initial... OK</pre>

在后台管理模型

1.创建超级管理员账号。

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c61" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ python manage.py createsuperuser</pre>

2.启动Web服务器，登录后台管理系统。

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c64" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ python manage.py runserver</pre>

3.注册模型类。

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c67" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
(venv)$ vim hrs/admin.py
from django.contrib import admin

from hrs.models import Emp, Dept

admin.site.register(Dept)
admin.site.register(Emp)</pre>

4.对模型进行CRUD操作。

5.注册模型管理类。修改admin.py文件，显示方式

<pre class="md-fences md-end-block" lang="" contenteditable="false" cid="c72" mdtype="fences" style="box-sizing: border-box; overflow: visible; font-family: monospace, monospace; font-size: 0.9em; white-space: pre; display: block; break-inside: avoid; text-align: left; background-image: inherit; background-position: inherit; background-size: inherit; background-repeat: inherit; background-attachment: inherit; background-origin: inherit; background-clip: inherit; background-color: rgb(248, 248, 248); position: relative !important; border: 1px solid rgb(231, 234, 237); border-radius: 3px; padding: 8px 4px 6px; margin-bottom: 15px; margin-top: 15px; width: inherit; color: rgb(51, 51, 51); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
from django.contrib import admin

from hrs.models import Emp, Dept

class DeptAdmin(admin.ModelAdmin):

list_display = ('no', 'name', 'location')
ordering = ('no', )

class EmpAdmin(admin.ModelAdmin):

list_display = ('no', 'name', 'job', 'mgr', 'sal', 'comm', 'dept')
search_fields = ('name', 'job')

admin.site.register(Dept, DeptAdmin)
admin.site.register(Emp, EmpAdmin)</pre>

day2