Django数据库类库MySQLdb使用详解

DATABASES = { 
  'default': { 
    'ENGINE': 'django.db.backends.mysql', 
    'NAME': 'mydatabase', 
    'USER': 'mydatabaseuser', 
    'PASSWORD': 'mypassword', 
    'HOST': '127.0.0.1', 
    'PORT': '3306', 
  } 
}

rpm -qa | grep mysql-devel

sudo yum install mysql-devel 
#python2.7： 
sudo pip install MySQLdb 
#python3.4: 
sudo pip install PyMySQL

python manager.py runserver

python manager.py shell

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

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

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)

INSTALLED_APPS = (
  'django.contrib.auth',
  'django.contrib.contenttypes',
  'django.contrib.sessions',
  'django.contrib.sites',
  'django.contrib.messages',
  'django.contrib.staticfiles',
  'django.contrib.admin',
  'django.contrib.admindocs',
  'DjangoMysqlSite.products',
)

>>> from DjangoMysqlSite.products.models import Company
>>> c = Company(full_name='www.pythontab.com',address='beijing',tel=12345678)
>>> c.save()
>>> company_list = Company.objects.all()
>>> company_list
>>> c = Company.objects.get(full_name="www.pythontab.com")
>>> c.tel = 23456789
>>> c.save()
 
>>> c = Company.objects.get(full_name="www.pythontab.com")
>>> c.delete()
#删除所有
>>> Company.objects.all().delete()