pythondjango连接mysql数据库做增删改查

1、下载安装mysqldb类库http://www.djangoproject.com/r/python-mysql/2、修改settings.py 配置数据属性

代码如下:

databases = { ‘default’: { ‘engine’: ‘django.db.backends.mysql’, # add ‘postgresql_psycopg2’, ‘mysql’, ‘sqlite3’ or ‘oracle’. ‘name’: ‘djangodb’, # or path to database file if using sqlite3. # the following settings are not used with sqlite3: ‘user’: ‘root’, ‘password’: ‘root’, ‘host’: ‘127.0.0.1’, # empty for localhost through domain sockets or ‘127.0.0.1’ for localhost through tcp. ‘port’: ‘3306’, # set to empty string for default. }}

修改完后进入dos进入项目目录下执行python manage.py shell命令启动交互界面输入一下代码验证数据库配置是否成功。没报错则成功!

代码如下:

>>> from django.db import connection>>> cursor = connection.cursor()

3、创建一个django app一个项目中包含一个或多个这样的app。app可以理解为一块功能集合。比如产品管理模块就包含增删该查等功能,可以把产品管理叫做一个app。每个django app都有独立的models,views等,易移植和被复用。dos进入项目目录 执行 python manage.py startapp products生成目录文件如下:

代码如下:

products/ __init__.py models.py tests.py views.py

4、编写models

代码如下:

from django.db import models# create your models here.class company(models.model): full_name = models.charfield(max_length=30) address = models.charfield(max_length=50) tel = models.charfield(max_length=15,blank=true)class product(models.model): product_name = models.charfield(max_length=30) price = models.floatfield() stock = models.integerfield(max_length=5) company = models.foreignkey(company)

5、模型安装(修改settings.py)

代码如下:

installed_apps = ( ‘django.contrib.auth’, ‘django.contrib.contenttypes’, ‘django.contrib.sessions’, ‘django.contrib.sites’, ‘django.contrib.messages’, ‘django.contrib.staticfiles’, # uncomment the next line to enable the admin: ‘django.contrib.admin’, # uncomment the next line to enable admin documentation: ‘django.contrib.admindocs’, ‘djangomysqlsite.products’,)

采用 python manage.py validate 检查模型的语法和逻辑是否正确。没有错误则执行 python manage.py syncdb创建数据表。现在你可以看到你的数据库除了生成了products_company,products_product外还创建了其它好几个表,这些是django管理后台所需表暂不管。6、简单的增删改查 进入python manage.py shell

代码如下:

from djangomysqlsite.products.models import company>>> c = company(full_name=’集团’,address=’杭州西湖’,tel=8889989)>>> c.save()>>> company_list = company.objects.all()>>> company_list>>> c = company.objects.get(full_name=”集团”)>>> c.tel = 123456>>> c.save()

>>> c = company.objects.get(full_name=”集团”)>>> c.delete()#删除所有>>> company.objects.all().delete()

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