订单交易平台准备工作

1.先搭建环境

# 1.先创建python基本环境，并且创建虚拟环境


# 2.创建完成后，先安装你所需要的Django版本：
pip install Django==3.2

# 3.创建Django项目：
django-admin startproject app01 .

# 4.创建Django,在app01根目录文件下创建apps文件，里面放app文件：
python manage.py startapp api apps/api

2.环境搭建完成后，进行settings项目配置（Mysql、redis、templates、static）

2.1 在app中创建static文件（css、js、images、plugins）、templates文件

2.2 配置settings文件

# mysql配置
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'day06',
        'USER': 'root',
        'PASSWORD': 'zt7758521',
        'HOST': '127.0.0.1',
        'PORT': 3306,
    }
}

# 配置静态文件
STATIC_URL = '/static/'


# 配置models文件
DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'


# 配置将来登录界面所需要的东西
MENU = {
    "ADMIN": [],
    "CUSTOMER": [],
}
PERMISSION = {
    "ADMIN": {},
    "CUSTOMER": {},
}

# 配置cache缓存（redis）
CACHES = {
    "default": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
            "CONNECTION_POOL_KWARGS": {"max_connections": 100},
            "PASSWORD": "",
        }
    }
}

# 配置session配置
SESSION_ENGINE = 'django.contrib.sessions.backends.cache'
SESSION_CACHE_ALIAS = 'default'

SESSION_COOKIE_NAME = "sid"  # Session的cookie保存在浏览器上时的key，即：sessionid＝随机字符串
SESSION_COOKIE_PATH = "/"  # Session的cookie保存的路径
SESSION_COOKIE_DOMAIN = None  # Session的cookie保存的域名
SESSION_COOKIE_SECURE = False  # 是否Https传输cookie
SESSION_COOKIE_HTTPONLY = True  # 是否Session的cookie只支持http传输
SESSION_COOKIE_AGE = 1209600  # Session的cookie失效日期（2周）

SESSION_EXPIRE_AT_BROWSER_CLOSE = False  # 是否关闭浏览器使得Session过期
SESSION_SAVE_EVERY_REQUEST = True  # 是否每次请求都保存Session，默认修改之后才保存

# 配置本地local_setting
try:
    from .local_settings import *
except Exception:
    pass

3.在urls.py中写入路由配置

# from django.contrib import admin
from django.urls import path
from web.views import account

urlpatterns = [
    # path('admin/', admin.site.urls),
    # 登录界面
    path('login/', account.login, name="login"),  
    # 短信登录界面
    path('sms/login/', account.sms_login, name="sms_login"),
]

4.在view文件夹中创建视图函数，account.py，并且在templates文件下创建两个前端界面

# 写入urls所需要的视图函数

from django.shortcuts import render, redirect

def login(request):
  return render(request,'login.html')

def sms_login(request):
  return render(request,'sms_login.html')

5.设计本项目的数据库表（在models.py中）

from django.db import models


class ActiveBaseModel(models.Model):
    active = models.SmallIntegerField(verbose_name="状态", default=1, choices=((1, "激活"), (0, "删除"),))

    class Meta:
        abstract = True


class Administrator(ActiveBaseModel):
    """ 管理员表 """
    username = models.CharField(verbose_name="用户名", max_length=32, db_index=True)
    password = models.CharField(verbose_name="密码", max_length=64)
    mobile = models.CharField(verbose_name="手机号", max_length=11, db_index=True)
    create_date = models.DateTimeField(verbose_name="创建日期", auto_now_add=True)


class Level(ActiveBaseModel):
    """ 级别表 """
    title = models.CharField(verbose_name="标题", max_length=32)
    percent = models.IntegerField(verbose_name="折扣")


class Customer(ActiveBaseModel):
    """ 客户表 """
    username = models.CharField(verbose_name="用户名", max_length=32, db_index=True)
    password = models.CharField(verbose_name="密码", max_length=64)
    mobile = models.CharField(verbose_name="手机号", max_length=11, db_index=True)
    balance = models.DecimalField(verbose_name="账户余额", default=0, max_digits=10, decimal_places=2)
    level = models.ForeignKey(verbose_name="级别", to="Level", on_delete=models.CASCADE)
    create_date = models.DateTimeField(verbose_name="创建日期", auto_now_add=True)
    creator = models.ForeignKey(verbose_name="创建者", to="Administrator", on_delete=models.CASCADE)


class PricePolicy(models.Model):
    """ 价格策略（原价，后续可以根据用级别不同做不同折扣）
    1  1000 10
    2  2000 18
    """
    count = models.IntegerField(verbose_name="数量")
    price = models.DecimalField(verbose_name="价格", default=0, max_digits=10, decimal_places=2)


class Order(ActiveBaseModel):
    """ 订单表 """
    status_choices = (
        (1, "待执行"),
        (2, "正在执行"),
        (3, "已完成"),
        (4, "失败"),
    )
    status = models.SmallIntegerField(verbose_name="状态", choices=status_choices, default=1)

    # 202211022123123123
    oid = models.CharField(verbose_name="订单号", max_length=64, unique=True)
    url = models.URLField(verbose_name="视频地址", db_index=True)
    count = models.IntegerField(verbose_name="数量")

    price = models.DecimalField(verbose_name="价格", default=0, max_digits=10, decimal_places=2)
    real_price = models.DecimalField(verbose_name="实际价格", default=0, max_digits=10, decimal_places=2)

    old_view_count = models.CharField(verbose_name="原播放量", max_length=32, default="0")

    create_datetime = models.DateTimeField(verbose_name="创建时间", auto_now_add=True)
    customer = models.ForeignKey(verbose_name="客户", to="Customer", on_delete=models.CASCADE)
    memo = models.TextField(verbose_name="备注", null=True, blank=True)


class TransactionRecord(ActiveBaseModel):
    """ 交易记录 """
    charge_type_class_mapping = {
        1: "success",
        2: "danger",
        3: "default",
        4: "info",
        5: "primary",
    }
    charge_type_choices = ((1, "充值"), (2, "扣款"), (3, "创建订单"), (4, "删除订单"), (5, "撤单"),)
    charge_type = models.SmallIntegerField(verbose_name="类型", choices=charge_type_choices)

    customer = models.ForeignKey(verbose_name="客户", to="Customer", on_delete=models.CASCADE)
    amount = models.DecimalField(verbose_name="金额", default=0, max_digits=10, decimal_places=2)

    creator = models.ForeignKey(verbose_name="管理员", to="Administrator", on_delete=models.CASCADE, null=True, blank=True)

    order_oid = models.CharField(verbose_name="订单号", max_length=64, null=True, blank=True, db_index=True)
    create_datetime = models.DateTimeField(verbose_name="交易时间", auto_now_add=True)
    memo = models.TextField(verbose_name="备注", null=True, blank=True)

最好在终端进行表的提交

python manage.py makemigrations

python manage.py migrate