Django REST framework+Vue 打造生鲜超市（二）

三、Models设计

3.1.项目初始化

（1）进虚拟环境下安装

django2.0.2

djangorestframework和相关依赖mark,filter

pillow 图片处理

pip install djangorestframework

pip install -i https://pypi.douban.com/simple django==2.0.2

pip install markdown

pip install django-filter

pip install pillow

pip install pymysql

（2）创建项目

项目：MxShop

app：users

#goods/models.py
__author__ = 'derek'

from datetime import datetime
from django.db import models
from DjangoUeditor.models import UEditorField

class GoodsCategory(models.Model):
"""
商品分类
"""
CATEGORY_TYPE = (
(1, "一级类目"),
(2, "二级类目"),
(3, "三级类目"),
)

name = models.CharField('类别名',default="", max_length=30,help_text="类别名")
code = models.CharField("类别code",default="", max_length=30,help_text="类别code")
desc = models.TextField("类别描述",default="",help_text="类别描述")
#目录树级别
category_type = models.IntegerField("类目级别",choices=CATEGORY_TYPE,help_text="类目级别")
# 设置models有一个指向自己的外键
parent_category = models.ForeignKey("self", on_delete=models.CASCADE, null=True, blank=True, verbose_name="父类目级别", help_text="父目录",
related_name="sub_cat")
is_tab = models.BooleanField("是否导航",default=False,help_text="是否导航")
add_time = models.DateTimeField("添加时间",default=datetime.now)

class Meta:
verbose_name = "商品类别"
verbose_name_plural = verbose_name

def __str__(self):
return self.name

class GoodsCategoryBrand(models.Model):
"""
某一大类下的宣传商标
"""
category = models.ForeignKey(GoodsCategory, on_delete=models.CASCADE, related_name='brands', null=True, blank=True, verbose_name="商品类目")
name = models.CharField("品牌名",default="", max_length=30,help_text="品牌名")
desc = models.TextField("品牌描述",default="", max_length=200,help_text="品牌描述")
image = models.ImageField(max_length=200, upload_to="brands/")
add_time = models.DateTimeField("添加时间",default=datetime.now)

class Meta:
verbose_name = "宣传品牌"
verbose_name_plural = verbose_name
db_table = "goods_goodsbrand"

def __str__(self):
return self.name

class Goods(models.Model):
"""
商品
"""
category = models.ForeignKey(GoodsCategory, on_delete=models.CASCADE, verbose_name="商品类目")
goods_sn = models.CharField("商品唯一货号",max_length=50, default="")
name = models.CharField("商品名",max_length=100,)
click_num = models.IntegerField("点击数",default=0)
sold_num = models.IntegerField("商品销售量",default=0)
fav_num = models.IntegerField("收藏数",default=0)
goods_num = models.IntegerField("库存数",default=0)
market_price = models.FloatField("市场价格",default=0)
shop_price = models.FloatField("本店价格",default=0)
goods_brief = models.TextField("商品简短描述",max_length=500)
goods_desc = UEditorField(verbose_name=u"内容", imagePath="goods/images/", width=1000, height=300,
filePath="goods/files/", default='')
ship_free = models.BooleanField("是否承担运费",default=True)
# 首页中展示的商品封面图
goods_front_image = models.ImageField(upload_to="goods/images/", null=True, blank=True, verbose_name="封面图")
# 首页中新品展示
is_new = models.BooleanField("是否新品",default=False)
# 商品详情页的热卖商品，自行设置
is_hot = models.BooleanField("是否热销",default=False)
add_time = models.DateTimeField("添加时间",default=datetime.now)

class Meta:
verbose_name = '商品信息'
verbose_name_plural = verbose_name

def __str__(self):
return self.name

class GoodsImage(models.Model):
"""
商品轮播图
"""
goods = models.ForeignKey(Goods, on_delete=models.CASCADE, verbose_name="商品", related_name="images")
image = models.ImageField(upload_to="", verbose_name="图片", null=True, blank=True)
add_time = models.DateTimeField("添加时间", default=datetime.now)

class Meta:
verbose_name = '商品轮播'
verbose_name_plural = verbose_name

def __str__(self):
return self.goods.name

class Banner(models.Model):
"""
首页轮播的商品
"""
goods = models.ForeignKey(Goods, on_delete=models.CASCADE, verbose_name="商品")
image = models.ImageField(upload_to='banner', verbose_name="轮播图片")
index = models.IntegerField("轮播顺序",default=0)
add_time = models.DateTimeField("添加时间", default=datetime.now)

class Meta:
verbose_name = '首页轮播'
verbose_name_plural = verbose_name

def __str__(self):
return self.goods.name

class IndexAd(models.Model):
"""
商品广告
"""
category = models.ForeignKey(GoodsCategory, on_delete=models.CASCADE, related_name='category',verbose_name="商品类目")
goods =models.ForeignKey(Goods, on_delete=models.CASCADE, related_name='goods')

class Meta:
verbose_name = '首页广告'
verbose_name_plural = verbose_name

def __str__(self):
return self.goods.name

class HotSearchWords(models.Model):
"""
搜索栏下方热搜词
"""
keywords = models.CharField("热搜词",default="", max_length=20)
index = models.IntegerField("排序",default=0)
add_time = models.DateTimeField("添加时间", default=datetime.now)

class Meta:
verbose_name = '热搜排行'
verbose_name_plural = verbose_name

def __str__(self):
return self.keywords

goods/models.py

3.4.trade交易的model设计

trade/models.py

# trade/models.py
__author__ = 'derek'

from datetime import datetime
from django.db import models

from goods.models import Goods

# get_user_model方法会去setting中找AUTH_USER_MODEL
from django.contrib.auth import get_user_model
User = get_user_model()

# Create your models here.
class ShoppingCart(models.Model):
"""
购物车
"""
user = models.ForeignKey(User, on_delete=models.CASCADE, verbose_name="用户")
goods = models.ForeignKey(Goods, on_delete=models.CASCADE, verbose_name="商品")
nums = models.IntegerField("购买数量",default=0)

add_time = models.DateTimeField(default=datetime.now, verbose_name="添加时间")

class Meta:
verbose_name = '购物车喵'
verbose_name_plural = verbose_name
unique_together = ("user", "goods")

def __str__(self):
return "%s(%d)".format(self.goods.name, self.nums)

class OrderInfo(models.Model):
"""
订单信息
"""
ORDER_STATUS = (
("TRADE_SUCCESS", "成功"),
("TRADE_CLOSED", "超时关闭"),
("WAIT_BUYER_PAY", "交易创建"),
("TRADE_FINISHED", "交易结束"),
("paying", "待支付"),
)
PAY_TYPE = (
("alipay", "支付宝"),
("wechat", "微信"),
)

user = models.ForeignKey(User, on_delete=models.CASCADE, verbose_name="用户")
#订单号唯一
order_sn = models.CharField("订单编号",max_length=30, null=True, blank=True, unique=True)
# 微信支付会用到
nonce_str = models.CharField("随机加密串",max_length=50, null=True, blank=True, unique=True)
# 支付宝交易号
trade_no = models.CharField("交易号",max_length=100, unique=True, null=True, blank=True)
#支付状态
pay_status = models.CharField("订单状态",choices=ORDER_STATUS, default="paying", max_length=30)
# 订单的支付类型
pay_type = models.CharField("支付类型",choices=PAY_TYPE, default="alipay", max_length=10)
post_script = models.CharField("订单留言",max_length=200)
order_mount = models.FloatField("订单金额",default=0.0)
pay_time = models.DateTimeField("支付时间",null=True, blank=True)

# 用户信息
address = models.CharField("收货地址",max_length=100, default="")
signer_name = models.CharField("签收人",max_length=20, default="")
singer_mobile = models.CharField("联系电话",max_length=11)

add_time = models.DateTimeField("添加时间",default=datetime.now)

class Meta:
verbose_name = "订单信息"
verbose_name_plural = verbose_name

def __str__(self):
return str(self.order_sn)

class OrderGoods(models.Model):
"""
订单内的商品详情
"""
# 一个订单对应多个商品
order = models.ForeignKey(OrderInfo, on_delete=models.CASCADE, verbose_name="订单信息", related_name="goods")
# 两个外键形成一张关联表
goods = models.ForeignKey(Goods, on_delete=models.CASCADE, verbose_name="商品")
goods_num = models.IntegerField("商品数量",default=0)

add_time = models.DateTimeField("添加时间",default=datetime.now)

class Meta:
verbose_name = "订单商品"
verbose_name_plural = verbose_name

def __str__(self):
return str(self.order.order_sn)

3.5.用户操作的model设计

user_operation/models.py

# user_operation/models.py
__author__ = 'derek'

from datetime import datetime
from django.db import models
from goods.models import Goods

from django.contrib.auth import get_user_model
User = get_user_model()

class UserFav(models.Model):
"""
用户收藏操作
"""
user = models.ForeignKey(User, on_delete=models.CASCADE, verbose_name="用户")
goods = models.ForeignKey(Goods, on_delete=models.CASCADE, verbose_name="商品", help_text="商品id")
add_time = models.DateTimeField("添加时间",default=datetime.now)

class Meta:
verbose_name = '用户收藏'
verbose_name_plural = verbose_name
unique_together = ("user", "goods")

def __str__(self):
return self.user.username

class UserAddress(models.Model):
"""
用户收货地址
"""
user = models.ForeignKey(User, on_delete=models.CASCADE, verbose_name="用户" )
province = models.CharField("省份",max_length=100, default="")
city = models.CharField("城市",max_length=100, default="")
district = models.CharField("区域",max_length=100, default="")
address = models.CharField("详细地址",max_length=100, default="")
signer_name = models.CharField("签收人",max_length=100, default="")
signer_mobile = models.CharField("电话",max_length=11, default="")
add_time = models.DateTimeField("添加时间",default=datetime.now)

class Meta:
verbose_name = "收货地址"
verbose_name_plural = verbose_name

def __str__(self):
return self.address

class UserLeavingMessage(models.Model):
"""
用户留言
"""
MESSAGE_CHOICES = (
(1, "留言"),
(2, "投诉"),
(3, "询问"),
(4, "售后"),
(5, "求购")
)
user = models.ForeignKey(User, on_delete=models.CASCADE, verbose_name="用户")
message_type = models.IntegerField(default=1, choices=MESSAGE_CHOICES, verbose_name="留言类型",
help_text=u"留言类型: 1(留言),2(投诉),3(询问),4(售后),5(求购)")
subject = models.CharField("主题",max_length=100, default="")
message = models.TextField("留言内容",default="",help_text="留言内容")
file = models.FileField(upload_to="message/images/", verbose_name="上传的文件", help_text="上传的文件")
add_time = models.DateTimeField("添加时间",default=datetime.now)

class Meta:
verbose_name = "用户留言"
verbose_name_plural = verbose_name

def __str__(self):
return self.subject