Models类 models.py
# coding:utf-8
from django.db import models
from db.Base_model import Base_Model
from db.Base_manager import BaseManager
class UserInfoManager(BaseManager):
def creat(self, username, password, email):
'''添加对象'''
userinfo = self.creat_one_object(username=username, password=password, email=email)
return userinfo
def select(self, username, password=None):
'''查询对象'''
print '%s--zh_cn-' % password
if password is None:
userinfo = self.get_one_object(username=username)
else:
userinfo = self.get_one_object(username=username, password=password)
return userinfo
class AddressManager(BaseManager):
'''地址模型类管理器'''
def get_default_address(self, userinfo_id):
'''获取用户默认收货信息'''
addr = self.get_one_object(userinfo_id=userinfo_id, is_def=True)
return addr
def add_one_address(self, userinfo_id, recipient_name, recipient_addr, recipient_phone, zip_code):
'''添加一个用户收货信息'''
# 查询用户是否有默认地址
def_addr = self.get_one_object(userinfo_id=userinfo_id)
if def_addr is None:
# 如果用户么有默认地址
addr = self.add_one_address(userinfo_id=userinfo_id, recipient_name=recipient_name,
recipient_addr=recipient_addr,
recipient_phone=recipient_phone, zip_code=zip_code, is_def=True)
else:
addr = self.add_one_address(userinfo_id=userinfo_id, recipient_name=recipient_name,
recipient_addr=recipient_addr,
recipient_phone=recipient_phone, zip_code=zip_code)
return addr
class UserInfo(Base_Model):
username = models.CharField(verbose_name='用户名', max_length=20)
password = models.CharField(verbose_name='密码', max_length=40)
email = models.EmailField(verbose_name='邮箱')
objects = UserInfoManager() # 创建管理类对象
class Meta:
db_table = 'userinfos' # 指定表名
class Adderss(Base_Model):
userinfo = models.ForeignKey('UserInfo', verbose_name='所属账户')
recipient_name = models.CharField(max_length=20, verbose_name='收货人')
recipient_phone = models.CharField(max_length=11, verbose_name='收货电话')
recipient_addr = models.CharField(max_length=256, verbose_name='收货地址')
zip_code = models.CharField(max_length=6, verbose_name='邮编')
is_def = models.BooleanField(default=False, verbose_name='默认地址')
objects = AddressManager()
class Meta:
db_table = 's_user_address'
BaseManager.py
# coding=utf-8
from django.db import models
import copy
class BaseManager(models.Manager):
'''定义管理器基类'''
def get_all_valid_fields(self):
'''获取self所在模型类的有效属性字符串列表'''
# 1. 获取self所在的模型类
models_class = self.model
# 2. 获取模型类的属性元组
attr_tuple = models_class._meta.get_fields()
# 3. 定义一个列表用来保存满足的属性名称
str_attr_list = []
for attr in attr_tuple:
# 如果有属性 是外键
if isinstance(attr,models.ForeignKey):
str_attr = '%s_id'%attr.name
else:
str_attr = attr.name
str_attr_list.append(str_attr)
return str_attr_list
# 增
def creat_one_object(self,**kwargs):
'''创建一个self所在模型类的对象'''
# 1.获取self所在模型类的有效属性字符串列表
valid_fields = self.get_all_valid_fields()
# 2.拷贝一份用来处理
kws = copy.copy(**kwargs)
# 3.去除kws 参数中self.model的无效属性
for key in kws:
if key not in valid_fields:
kwargs.pop(key)
# 4.获取self所在模型类
model_class = self.model
# 5.创建一个模型类对象
obj = model_class(**kwargs)
# 6.调用对象的save方法保存进数据库
obj.save()
# 7.返回这个对象
return obj
# 查
def get_one_object(self,**filters):
'''根据filters条件查询self.model模型类的对象'''
try:
obj = self.get(**filters)
except self.model.DoesNotExist:
obj = None
return obj
# 根据条件查询self模型的查询集
def get_object_list(self, filters={}, exclud_filters={}, order_by=('-pk',)):
object_list = self.filter(**filters).exclude(**exclud_filters).order_by(*order_by)
return object_list
# 改
#删
