您的位置：首页 > 编程语言 > Python开发

Python系列视频教程: Django【13讲】第八讲 数据库使用2

2014-02-12 22:05 906 查看
Python系列视频教程: Django【13讲】第八讲 数据库使用2

1.在Django里面如何实现对数据的基本操作

C:\Python27>mysql -uroot

在Django里面如何实现对数据的基本操作

首先是数据的添加动作

ipython manage.py shell

我只能使用python manage.py shell

D:\test\mysite\csvt03>python manage.py shell

Python 2.7.2 (default, Jun 24 2011, 12:21:10) [MSC v.1500 32 bit (Intel)] on win

32

Type "help", "copyright", "credits" or "license" for more information.

(InteractiveConsole)

>>> from blog.models import Employee

>>> Employee

<class 'blog.models.Employee'>

>>> emp=Employee()

>>> emp.name='Alen'

>>> emp.save()

>>> emp=Employee(name='Tom');

>>> emp.save();

>>> Employee.objects.create(name='Max');

<Employee: Employee object>

>>> Employee.objects.create(name='Sumer');

<Employee: Employee object>

>>> emp

<Employee: Employee object>

>>> emps=Employee.objects.all()

>>> emps

[<Employee: Employee object>, <Employee: Employee object>, <Employee: Employee o

bject>, <Employee: Employee object>]

>>>



修改models.py

def __unicode__(self):

return self.name

退出刚才的mange.py

再重新进去

>>> emps=Employee.objects.all()

>>> emps

[<Employee: Alen>, <Employee: Tom>, <Employee: Max>, <Employee: Sumer>]

>>>



2.界面中如何显示数据



url(r'^index/$', 'blog.views.index'),

views.py

#from django.shortcuts import render

from blog.models import Employee

from django.shortcuts import render_to_response

# Create your views here.

def index(req):

emps=Employee.objects.all()

return render_to_response('index.html',{'emps':emps})



index.html

<body>

<h1>hello</h1>

{{emps}}

</body>





D:\test\mysite\csvt03>python manage.py runserver

http://127.0.0.1:8000/index/

hello

[<Employee: Alen>, <Employee: Tom>, <Employee: Max>, <Employee: Sumer>]



修改index.html

<body>

<h1>hello</h1>

{%for emp in emps %}

<div>

{{forloop.counter}} {{emp}}

</div>

{%endfor %}

<div>

共有 {{emps.length}}记录

</div>

</body>

hello

1 Alen
2 Tom
3 Max
4 Sumer
共有 记录
这里emps.length没有起到作用？？？
内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 点击这里给我发消息
标签： 
相关文章推荐
新的分享
章节导航