国庆手撸商品管理系统(三)

之前的内容

点我管理系统(一)

点我管理系统(二)

一.实现的内容

• 商品退货

• 商品库存

• 商品进货

• 商品删除

• 商品还原

• 时钟

• 优化模型

二.后续内容准备优化内容

• 把数据库查询的内容存在缓存中
• 增加按日期,按商品名查询
• 增加快捷商品增加
• 优化代码
• 优化界面

三.目录结构

drf_test
|___drf_api
|    |___admin.py
|    |___apps.py
|    |___migrations
|    |___models.py
|    |___tests.py
|    |___userinfo_form.py
|    |___views
|    |    |____commodity.py
|    |    |____user.py
|    |_____init__.py
|___drf_test
|    |___settings.py
|    |___urls.py
|    |___wsgi.py
|    |_____init__.py
|___img
|    |___avatar
|___manage.py
|___static
|    |___bootstrap-3.3.7-dist
|    |___jquery-3.4.1.min.js
|___templates
|    |___aa.html
|    |___add.html
|    |___del.html
|    |___index.html
|    |___login.html
|    |___register.html
|    |___return.html
|    |___sales.html
|    |___show.html
|    |___show_del.html
|    |___template.html
|_____pycache__
|    |___manage.cpython-37.pyc

四.代码

1.配置

setting.py

"""
Django settings for drf_test project.

Generated by 'django-admin startproject' using Django 1.11.22.

For more information on this file, see
https://docs.djangoproject.com/en/1.11/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.11/ref/settings/
"""

import os
# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.11/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'ppa5l3jvxr4k^ow*4o+0_^7@&sa3x+!hb_$artwraa%60iq@g7'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'drf_api',
    'rest_framework',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'drf_test.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, 'templates')]
        ,
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'drf_test.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.11/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',   # 数据库引擎
        'NAME': 'mib',         # 你要存储数据的库名，事先要创建之
        'USER': 'root',         # 数据库用户名
        'PASSWORD': '16745',     # 密码
        'HOST': 'localhost',    # IP
        'PORT': '3306',         # 数据库使用的端口
    }
}


# Password validation
# https://docs.djangoproject.com/en/1.11/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/1.11/topics/i18n/

LANGUAGE_CODE = 'zh-hans'

TIME_ZONE = 'Asia/Shanghai'

USE_I18N = True

USE_L10N = True

USE_TZ = False


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.11/howto/static-files/

STATIC_URL = '/static/'
STATICFILES_DIRS=(os.path.join(BASE_DIR,'static'),)
AUTH_USER_MODEL = "drf_api.UserInfo"
MEDIA_URL  = "/img/"
MEDIA_ROOT = os.path.join(BASE_DIR, "img")


# REST_FRAMEWORK = {
#     'DEFAULT_AUTHENTICATION_CLASSES': (
#         'rest_framework.authentication.TokenAuthentication',
#     )
# }

2.模型

from django.db import models
from django.contrib.auth.models import AbstractUser

from rest_framework import mixins
# Create your models here.
class UserInfo(AbstractUser):
    avatar = models.FileField(upload_to='avatar/', default='avatar/default.png')
    class Meta:
        verbose_name='用户表'
        verbose_name_plural = verbose_name


class  Commodity(models.Model):
    name = models.CharField(max_length=60,db_column='商品名',null=True)
    inventory = models.IntegerField(db_column='库存',null=True)
    cost = models.DecimalField (max_digits=60,decimal_places=2,db_column='总成本',null=True)
    selling_price= models.DecimalField (max_digits=60,decimal_places=2,db_column='总销售价格',default=0)
    batch = models.CharField(max_length=60, db_column='批号', null=True)
    quantity_in = models.IntegerField(db_column='进货总数量',null=True)
    sales_volume = models.IntegerField(db_column='销售量总数量',default=0)
    return_volume = models.IntegerField(db_column='退货总数量',default=0)
    is_delete = models.BooleanField(default=False, db_column='是否删除')
    def __str__(self):
        return self.name

    class Meta:
        db_table = "库存表"


class DaySales(models.Model):
    date = models.CharField(max_length=60,db_column='日期')
    number = models.DecimalField(max_digits=60, decimal_places=2, db_column='营业总额', null=True)
    is_delete = models.BooleanField(default=False, db_column='是否删除')
    date_changed = models.DateTimeField(auto_now=True,db_column='最后修改日期')
    def __str__(self):
        return self.date
    class Meta:
        db_table = "日销售表"

class DayStock(models.Model):
    date = models.CharField(max_length=60,db_column='日期')
    number = models.DecimalField(max_digits=60, decimal_places=2, db_column='进货总额', null=True)
    is_delete = models.BooleanField(default=False, db_column='是否删除')
    date_changed = models.DateTimeField(auto_now=True,db_column='最后修改日期')
    def __str__(self):
        return self.date
    class Meta:
        db_table = "日进货表"

class DayReturn(models.Model):
    date = models.CharField(max_length=60,db_column='日期')
    number  = models.DecimalField(max_digits=60, decimal_places=2, db_column='退货总额', null=True)
    is_delete = models.BooleanField(default=False, db_column='是否删除')
    date_changed = models.DateTimeField(auto_now=True,db_column='最后修改日期')
    def __str__(self):
        return self.date
    class Meta:
        db_table = "日退货表"


class CommoditySales(models.Model):
    name = models.CharField(max_length=60,db_column='商品名',null=True)
    data = models.ForeignKey('DaySales','id',db_column='销售日期',null=True)
    selling_price= models.DecimalField (max_digits=60,decimal_places=2,db_column='销售价格',null=True)
    sales_volume = models.IntegerField(db_column='销售量数量',null=True)
    batch = models.CharField(max_length=60,db_column='批号',null=True)
    is_delete = models.BooleanField(default=False, db_column='是否删除')
    date_changed = models.DateTimeField(auto_now=True,db_column='最后修改日期')
    def __str__(self):
        return self.name
    class Meta:
        db_table = "商品销售表"


class CommodityStock(models.Model):
    name = models.CharField(max_length=60,db_column='商品名',null=True)
    data = models.ForeignKey('DayStock','id',db_column='进货日期',null=True)
    cost = models.DecimalField (max_digits=60,decimal_places=2,db_column='单件成本',null=True)
    Stock_volume = models.IntegerField( db_column='进货数量', null=True)
    batch = models.CharField(max_length=60,db_column='批号',null=True)
    is_delete = models.BooleanField(default=False, db_column='是否删除')
    date_changed = models.DateTimeField(auto_now=True,db_column='最后修改日期')
    def __str__(self):
        return self.name
    class Meta:
        db_table = "商品进货表"

class CommodityReturn(models.Model):
    name = models.CharField(max_length=60,db_column='商品名',null=True)
    data = models.ForeignKey('DayReturn','id',db_column='退货日期',null=True)
    cost = models.DecimalField (max_digits=60,decimal_places=2,db_column='退货价格',null=True)
    return_volume = models.IntegerField( db_column='退货数量', null=True)
    batch = models.CharField(max_length=60,db_column='批号',null=True)
    is_delete = models.BooleanField(default=False, db_column='是否删除')
    date_changed = models.DateTimeField(auto_now=True,db_column='最后修改日期')
    def __str__(self):
        return self.name
    class Meta:
        db_table = "商品退货表"

3.路由

"""drf_test URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/1.11/topics/http/urls/
Examples:
Function views
    1. Add an import:  from my_app import views
    2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
Class-based views
    1. Add an import:  from other_app.views import Home
    2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
Including another URLconf
    1. Import the include() function: from django.conf.urls import url, include
    2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
"""
from django.conf.urls import url
from django.contrib import admin
from django_filters import views

from drf_api.views import user
from drf_api.views import commodity
from django.views.static import serve
from .settings import MEDIA_ROOT

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^register/', user.register),
    url(r'^test/', user.test),
    url(r'^login/', user.login),
    url(r'^loginout/', user.loginout),
    url(r'^get_code/', user.get_code),
    url(r'^show/', commodity.Show.as_view()),
    url(r'^add/', commodity.Add.as_view()),
    url(r'^del/', commodity.Del.as_view()),
    url(r'^show_del/', commodity.ShowDel.as_view()),
    url(r'^sales/', commodity.Sales.as_view()),
    url(r'^return/', commodity.Return.as_view()),
    url(r'', user.index),
    url(r'^img/(?P<path>.*)', serve, {'document_root': MEDIA_ROOT}),
]

4.用户视图

user.py

from django.shortcuts import render,HttpResponse,redirect
from django.http import JsonResponse

from PIL import Image,ImageDraw,ImageFont
import random

from io import BytesIO

from django.contrib import auth

from drf_api.userinfo_form import Register
from drf_api import models
from rest_framework.throttling import SimpleRateThrottle


def test(request):
    return render(request, 'aa.html')



def register(request):
    if request.method=='GET':
        form=Register()
        return render(request, 'register.html', {'form':form})
    elif request.is_ajax():
        response={'code':100,'msg':None}
        form = Register(request.POST)
        if form.is_valid():
            #校验通过的数据
            clean_data=form.cleaned_data
            #把re_pwd剔除
            clean_data.pop('re_pwd')
            #取出头像
            avatar=request.FILES.get('avatar')
            if avatar:
                clean_data['avatar']=avatar
            user=models.UserInfo.objects.create_user(**clean_data)
            if user:
                response['msg'] = '创建成功'
            else:
                response['code'] = 103
                response['msg'] = '创建失败'
        else:
            response['code']=101
            #把校验不通过的数据返回
            response['msg']=form.errors
            print(type(form.errors))
        return JsonResponse(response,safe=False)


def login(request):
    if request.method=='GET':
        return render(request, 'login.html')
    else:
        print(request.POST)
        user_name=request.POST.get('name')
        pwd=request.POST.get('pwd')
        code=request.POST.get('code')

        user=auth.authenticate(username=user_name,password=pwd)
        print(user)
        if request.session.get('code').upper() !=code.upper(): #忽略大小写
            return HttpResponse('验证码错误')
        elif not user:
            return HttpResponse('账号密码错误')
        else:
            auth.login(request,user)
            return redirect('/show/')



def get_code(request):
    if request.method == 'GET':
        img = Image.new('RGB', (350, 40), (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)))
        # 写文字
        # 生成一个字体对象
        font = ImageFont.truetype('/static/Gabriola.ttf', 34)
        # 调用方法，返回一个画板对象
        draw = ImageDraw.Draw(img)

        new_text =''
        x = 100
        # 生成随机4位数字
        text_chiose = 'zxcvbnmasdfghjklqwertyup23456789ZXCVBNMASDFGHJKLQWERTYUP'
        text_list=random.sample(text_chiose,4)
        for text in text_list:
            x+=20
            y = random.randint(1,5)
            draw.text((x, y), text, (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)),
                      font=font)
            new_text +=text



        # 加点线
        width = 320
        height = 35
        for i in range(2):
            x1 = random.randint(0, width)
            x2 = random.randint(0, width)
            y1 = random.randint(0, height)
            y2 = random.randint(0, height)
            # 在图片上画线
            draw.line((x1, y1, x2, y2), fill=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)))

        for i in range(10):
            # 画点
            draw.point([random.randint(0, width), random.randint(0, height)], fill=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)))
            x = random.randint(0, width)
            y = random.randint(0, height)
            # 画弧形
            draw.arc((x, y, x + 4, y + 4), 0, 90, fill=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)))
        print(new_text)
        #存在session中
        request.session['code']=new_text
        #存内存
        f = BytesIO()
        img.save(f, 'png')
        return HttpResponse(f.getvalue())

def loginout(request):
    auth.logout(request)
    return redirect('/login')


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

5.商品视图

commodity.py

这里Return视图类有点偷懒了里面变量名用的非常非常不规范请见谅

import datetime

from django.shortcuts import render, HttpResponse
from rest_framework.views import APIView

from drf_api.models import *


class Show(APIView):
    def get(self, request):
        Commodity_list = Commodity.objects.filter(is_delete=False).order_by('name').all()
        print(Commodity_list)
        return render(request, 'show.html', {'Commodity_list': Commodity_list})


class Add(APIView):
    def get(self, request):
        Commodity_list = Commodity.objects.filter(is_delete=False).order_by('name').all()
        print(Commodity_list)
        return render(request, 'add.html')

    def post(self, request):
        print(request.POST)
        name = request.POST.get('name')  # type:str
        batch = request.POST.get('batch')  # type:str
        cost = request.POST.get('cost')  # type:str
        Stock_volume = request.POST.get('Stock_volume')  # type:str
        time = str(datetime.datetime.now()).split(' ')[0].replace('-', '')

        DayStock_obj = DayStock.objects.filter(date=time).first()

        try:
            number = float(cost) * int(Stock_volume)
        except:
            return HttpResponse('数量和价格请输入数字')
        try:
            if not DayStock_obj:
                DayStock_obj = DayStock.objects.create(date=time, number=number)
            else:
                old_number = float(DayStock_obj.number)
                DayStock_obj.number = old_number + number
                DayStock_obj.save()

            CommodityStock_obj = CommodityStock.objects.create(name=name, data=DayStock_obj, cost=number,
                                                               Stock_volume=int(Stock_volume), batch=batch)

            obj = Commodity.objects.filter(is_delete=False, name=name, batch=batch).first()
            if obj:
                obj.quantity_in += int(Stock_volume)
                obj.inventory += int(Stock_volume)
                old_number = float(obj.cost)
                obj.cost = old_number + number
                obj.save()
            else:
                Commodity.objects.create(name=name, inventory=int(Stock_volume), cost=float(cost),
                                         quantity_in=int(Stock_volume), batch=batch)
            return HttpResponse('添加成功')
        except:
            return HttpResponse('添加失败')


class Del(APIView):

    def get(self, request):
        Commodity_list = Commodity.objects.filter(is_delete=False).order_by('name').all()
        print(Commodity_list)
        return render(request, 'del.html', {'Commodity_list': Commodity_list})

    def post(self, request):
        c_id = request.POST.get('c_id')
        Commodity_obj = Commodity.objects.filter(id=c_id).first()
        Commodity_obj.is_delete = True
        Commodity_obj.save()
        return HttpResponse('删除成功')


class ShowDel(APIView):

    def get(self, request):
        Commodity_list = Commodity.objects.filter(is_delete=True).all()
        print(Commodity_list)
        return render(request, 'show_del.html', {'Commodity_list': Commodity_list})

    def post(self, request):
        c_id = request.POST.get('c_id')
        Commodity_obj = Commodity.objects.filter(id=c_id).first()
        Commodity_obj.is_delete = False
        Commodity_obj.save()
        return HttpResponse('恢复成功')


class Sales(APIView):

    def get(self, request):
        Commodity_list = Commodity.objects.filter(is_delete=False).order_by('name').all()
        print(Commodity_list)
        return render(request, 'sales.html', {'Commodity_list': Commodity_list})

    def post(self, request):
        c_id = request.POST.get('c_id')
        selling_price = request.POST.get('selling_price')
        sales_volume = request.POST.get('sales_volume')
        try:
            selling_price = float(selling_price)
            sales_volume = int(sales_volume)
        except:
            return HttpResponse('数量和价格请输入数字')

        try:
            Commodity_obj = Commodity.objects.filter(id=c_id).first()
            name = Commodity_obj.name
            batch = Commodity_obj.batch
            time = str(datetime.datetime.now()).split(' ')[0].replace('-', '')

            DaySales_obj = DaySales.objects.filter(date=time).first()

            number = selling_price * sales_volume

            if not DaySales_obj:
                DaySales_obj = DaySales.objects.create(date=time, number=number)
            else:
                old_number = float(Commodity_obj.selling_price)
                DaySales_obj.number = old_number + number
                DaySales_obj.save()

            CommoditySales_obj = CommoditySales.objects.create(name=name, data=DaySales_obj, selling_price=selling_price,
                                                               sales_volume=sales_volume, batch=batch)

            Commodity_obj.sales_volume += sales_volume
            Commodity_obj.inventory -= sales_volume
            old_number = float(Commodity_obj.selling_price)
            Commodity_obj.selling_price = old_number + number
            Commodity_obj.save()
            return HttpResponse('出售成功')
        except:
            return HttpResponse('数据异常')


class Return(APIView):

    def get(self, request):
        Commodity_list = Commodity.objects.filter(is_delete=False).order_by('name').all()
        print(Commodity_list)
        return render(request, 'return.html', {'Commodity_list': Commodity_list})

    def post(self, request):
        c_id = request.POST.get('c_id')
        selling_price = request.POST.get('selling_price')
        sales_volume = request.POST.get('sales_volume')
        try:
            selling_price = float(selling_price)
            sales_volume = int(sales_volume)
        except:
            return HttpResponse('数量和价格请输入数字')

        try:
            Commodity_obj = Commodity.objects.filter(id=c_id).first()
            name = Commodity_obj.name
            batch = Commodity_obj.batch
            time = str(datetime.datetime.now()).split(' ')[0].replace('-', '')

            DayReturn_obj = DayReturn.objects.filter(date=time).first()

            number = selling_price * sales_volume

            if not DayReturn_obj:
                DayReturn_obj = DayReturn.objects.create(date=time, number=number)
            else:
                old_number = float(Commodity_obj.selling_price)
                DayReturn_obj.number = old_number + number
                DayReturn_obj.save()

            CommodityReturn_obj = CommodityReturn.objects.create(name=name, data=DayReturn_obj, cost=selling_price,
                                                               return_volume=sales_volume, batch=batch)

            Commodity_obj.return_volume += sales_volume
            Commodity_obj.inventory -= sales_volume
            old_number = float(Commodity_obj.selling_price)
            Commodity_obj.selling_price = old_number + number
            Commodity_obj.save()
            return HttpResponse('退货成功')
        except:
            return HttpResponse('数据异常')

6.网页

模板template.html

<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <link rel="stylesheet" href="/static/bootstrap-3.3.7-dist/css/bootstrap.min.css">
    <script src="/static/jquery-3.4.1.min.js"></script>
    <script src="/static/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
    <title>{% block title_text %}{% endblock %}</title>
</head>
<style>
    table{
            background: antiquewhite;
    }
    .header {
        position: fixed;
        top: 0;
        left: 0;
        height: 100px;
        width: 100%;
        background: red;
    }

    .header_left {

        position: absolute;
        line-height: 100px;
        font-size: 50px;
        width: 20%;
        text-align: center;
        background: black;
        color: white;
    }
        .header_middle {
        position: absolute;
        line-height: 100px;
        font-size: 50px;
        width: 20%;
        background: none;
        color: white;
        left: 20%;
    }

    .header_right {
        float: right;
    }

    .body {
        position: fixed;
        top: 100px;
        left: 0;
        bottom: 20px;
        width: 100%;
    }

    .body_left {
        position: fixed;
        top: 100px;
        bottom: 20px;
        width: 20%;
        background: white;
        left: 0;
    }

    .body_right {
        overflow: auto;
        position: fixed;
        top: 100px;
        left: 20%;
        bottom: 20px;
        width: 80%;
        background: #2aabd2;
    }

    .footer {
        position: fixed;
        left: 0;
        bottom: 0;
        height: 20px;
        width: 100%;
        background: black;
    }
</style>
{% block new_css %}
{% endblock %}
<body>

<div class="header">
    <div class="header_left">管理系统</div>
    <div class="header_middle"><span id="clock"></span></div>
    <div class="header_right">
        {% if request.user.is_authenticated %}
            <span><img src=http://127.0.0.1:8000/img/{{ request.user.avatar }} alt="" style="height: 30px;width: 30px">尊敬的{{ request.user.username }}</span>
            <span class="dropdown">
  <button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown"
          aria-haspopup="true" aria-expanded="true" style="font-size: 12px">
    更多操作
    <span class="caret"></span>
  </button>
  <ul class="dropdown-menu" aria-labelledby="dropdownMenu1" >
    <li><a href="#" style="line-height: 0.428571;">修改头像</a><a href="#">修改密码</a></li>
    <li role="separator" class="divider"></li>
    <li><a href="/loginout/" style="line-height: 0.428571;">登出</a></li>
  </ul>
</span>
        {% else %}
            <spen style="line-height: 50px;float: right;position: absolute;right: 120px;"><a
                    href="/login/">登入</a>{{ request.user.username }}</spen>
            <spen style="line-height: 50px;float: right;position: absolute;right: 80px;"><a
                    href="/register/">注册</a>{{ request.user.username }}</spen>
        {% endif %}
    </div>
</div>
<div class="body">
    <div class="body_left">
        <ul class="nav nav-pills nav-stacked nav-pills-stacked-example">
            <li role="presentation" class="active"><a>库存管理</a></li>
            <li role="presentation"><a href="/show/">商品库存</a></li>
            <li role="presentation"><a href="/add/">商品进货</a></li>
            <li role="presentation"><a href="/return/">商品退货</a></li>
            <li role="presentation"><a href="/sales/">商品销售</a></li>
            <li role="presentation"><a href="/del/">删除库存商品</a></li>
            <li role="presentation"><a href="/show_del/">删除商品查看</a></li>
        </ul>

    </div>
    <div class="body_right">
        {% block data %}
        {% endblock %}
    </div>
</div>
<div class="footer"></div>
</body>
</html>
<script>
    function get_time() {
        var obj = new Date();
        var hour = obj.getHours();
        var min = obj.getMinutes();
        var seconds = obj.getSeconds();
        if (parseInt(seconds)<10)seconds='0'+seconds;
        if (parseInt(hour)<10)hour='0'+hour;
        if (parseInt(min)<10)min='0'+min;
        var time = hour + ':' + min + ':' + seconds
        var clock = document.querySelector('#clock')
        clock.innerText = time
    }
    setInterval(get_time,1000)
</script>
{% block new_js %}
{% endblock %}

注册register.html

{% extends 'template.html' %}
{% block title_text %}
    注册
{% endblock %}
{% block new_css %}
{% endblock %}
{% block data %}
    <div class="container-fluid">
        <div class="row">
            <div class="col-md-6 col-md-offset-3">

                <h1>注册</h1>
                <form id="my_form">
                    {% for foo in form %}
                        <div class="form-group">
                            {#foo.auto_id   就是foo生成的input的id#}
                            <label for="{{ foo.auto_id }}">{{ foo.label }}</label>
                            {{ foo }} <span style="color: red" class="error pull-right"></span>
                        </div>

                    {% endfor %}
                    <div class="form-group">
                        <label for="id_file">头像
                            <img src="/img/avatar/default.png" width="80" height="80" style="margin-left: 20px"
                                 id="id_img">
                        </label>


                        <input type="file" name="file" id="id_file" style="display: none">
                    </div>
                    <input type="button" class="btn btn-success" value="提交" id="id_submit">
                </form>
            </div>
        </div>
    </div>
{% endblock %}
{% block new_js %}
    <script>
        //当该控件发生变化，响应该事件
        $("#id_file").change(function () {
            //alert(1)
            //取到文件对象
            var file = $("#id_file")[0].files[0]
            //放到img控件上，借助于filereader 中间的东西，文件阅读器
            //生成一个文件阅读器对象赋值给filereader
            var filereader = new FileReader()
            //把文件读到filereader对象中
            //读文件需要时间，需要文件读完再去操作img
            filereader.readAsDataURL(file)

            filereader.onload = function () {
                $("#id_img").attr('src', filereader.result)
            }

        })
        $("#id_submit").click(function () {

            //ajax 上传文件


            var formdata = new FormData()
            //一个一个往里添加，稍微复杂，用简便方法
            // formdata.append('name',$("#id_name").val())
            // formdata.append('pwd',$("#id_pwd").val())

            //简便方法
            //form 对象的serializeArray，它会把form中的数据包装到一个对象中（不包含文件）
            var my_form_data = $("#my_form").serializeArray()
            //console.log(typeof my_form_data)
            //console.log(my_form_data)
            //jq的循环，传两个参数，第一个是要循环的对象，第二个参数是一个匿名函数
            $.each(my_form_data, function (k, v) {
                {#console.log(k)#}
                {#console.log(v)#}
                formdata.append(v.name, v.value)
            })
            formdata.append('avatar', $("#id_file")[0].files[0])


            $.ajax({
                url: '/register/',
                type: 'post',
                processData: false, //告诉jQuery不要去处理发送的数据
                contentType: false,// 告诉jQuery不要去设置Content-Type请求头
                data: formdata,
                success: function (data) {
                    //console.log(data)
                    if (data.code == 100) {
                        location.href = '/login/'
                    } else if (data.code == 101) {
                        $.each(data.msg, function (k, v) {
                            console.log(k)
                            console.log(v)
                            $("#id_" + k).next().html(v[0])
                            if (k == '__all__') {
                                $("#id_re_pwd").next().html(v[0])
                            }

                        })

                    }
                    //定时器
                    setTimeout(function () {
                        $(".error").html("")
                    }, 3000)
                }


            })
        })


    </script>
{% endblock %}

登入login.html

{% extends 'template.html' %}
{% block title_text %}
    登入
{% endblock %}
{% block new_css %}
    <style>
        .img-code:hover{

        }
    </style>
{% endblock %}
{% block data %}
    <div class="container-fluid center-block">
        <div class="row">
            <div class="col-md-6 col-md-offset-3">
                {% csrf_token %}
                <h1>登陆</h1>
                <form action="">
                    <div class="form-group">
                        <label for="id_name">用户名</label>
                        <input type="text" name="name" id="id_name" class="form-control">
                    </div>
                    <div class="form-group">
                        <label for="pwd">密码</label>
                        <input type="password" name="pwd" id="pwd" class="form-control">
                    </div>
                    <div class="form-group">
                        <label for="id_code">验证码</label>
                        <div class="row">
                            <div class="col-md-6">
                                <input type="text" name="code" id="id_code" class="form-control">
                            </div>
                            <div class="col-md-6" id="img">
                                <img src="/get_code/" height="40" width="240" class="img-code">
                            </div>
                        </div>
                    </div>
                    <input type="button" value="提交" class="btn-success" id="up_data">
                    <span style="color: red" id="msg"></span>
                </form>
            </div>
        </div>
    </div>
{% endblock %}
{% block new_js %}
    <script>
        $('.img-code').click(function () {
            var img_code_src = $(this).attr('src');
            img_code_src += '1';
            console.log(img_code_src);
            $(this).attr('src', img_code_src)
        })
    </script>

    <script>
        $('#up_data').click(function () {
            $.ajax({
                type: 'post',
                url: '/login/',
                data: {
                    'name': $('#id_name').val(),
                    'pwd': $('#pwd').val(),
                    'code': $('#id_code').val(),
                    'csrfmiddlewaretoken': '{{csrf_token}}'
                },
                success: function (msg) {
                    console.log(msg);
                    $('#msg').text(msg);
                    if (msg == '登入成功') {
                        console.log('sb');
                    }
                }
            })
        })
    </script>
{% endblock %}

首页index.html

{% extends 'template.html' %}
{% block title_text %}
    首页
{% endblock %}
{% block new_css %}
{% endblock %}
{% block data %}
    <div class="msg" style="    font-size: 100px;
    text-align: center;
    color: red;
}">欢迎光临
    </div>
{% endblock %}
{% block new_js %}
{% endblock %}

进货add.html

{% extends 'template.html' %}
{% block title_text %}
    添加商品
{% endblock %}
{% block new_css %}
{% endblock %}
{% block data %}
    <form action="" method="post">
        {% csrf_token %}
        <label for="name">商品名</label>
        <input type="text" id="name" name="name">
        <label for="Stock_volume">商品数量</label>
        <input type="text" id="Stock_volume" name="Stock_volume">
        <label for="batch">商品批号</label>
        <input type="text" id="batch" name="batch">
        <label for="cost">商品单价(元)</label>
        <input type="text" id="cost" name="cost">
        <input type="button" value="提交" class="custom_button">
    </form>
    <div class="msg"></div>
{% endblock %}
{% block new_js %}
    <script>
    var new_show_msg =''
        var custom_button = document.querySelector('.custom_button');
        custom_button.onclick = function () {
            var name = document.querySelector('#name').value;
            var Stock_volume = document.querySelector('#Stock_volume').value;
            var batch = document.querySelector('#batch').value;
            var cost = document.querySelector('#cost').value;
            var show_msg = '商品名:' + name + '\n批号:' + batch + '\n数量:' + Stock_volume + '\n成本单价:' + cost+'元'
            if (name && Stock_volume && batch && cost) {
                if (confirm(show_msg)){
                    $.ajax(
                        {
                            type: 'post',
                            url: '/add/',
                            data: {
                                'name': name,
                                'Stock_volume': Stock_volume,
                                'batch': batch,
                                'cost': cost,
                                'csrfmiddlewaretoken': '{{csrf_token}}'
                            }, success: function (msg) {
                                var show = document.querySelector('.msg')
                                new_show_msg += '<div style="white-space: pre-line;border: 2px solid;position: inherit;"><div style="color:red">'+msg+'</div>'+show_msg+'</div>'
                                show.innerHTML=new_show_msg
                            }
                        }
                    )
                }
            } else {
                alert('内容不能为空')
            }


        }
    </script>

{% endblock %}

销售sales.html

{% extends 'template.html' %}
{% block title_text %}
    删除商品库存
{% endblock %}
{% block new_css %}
{% endblock %}
{% block data %}
    <table class="table table-hover">
        <thead>
        <tr>
            <th></th>
            <th>商品名</th>
            <th>商品批号</th>
            <th>库存</th>
            <th>总成本</th>
            <th>总销售额</th>
            <th>进货总数量</th>
            <th>销售量总数量</th>
            <th>退货总数量</th>
            <th>销售</th>
        </tr>
        </thead>
        <tbody>
        {% for Commodity_obj in Commodity_list %}
            <tr>
                <th scope="row">1</th>
                <td>{{ Commodity_obj.name }}</td>
                <td>{{ Commodity_obj.batch }}</td>
                <td>{{ Commodity_obj.inventory }}</td>
                <td>{{ Commodity_obj.cost }}</td>
                <td>{{ Commodity_obj.selling_price }}</td>
                <td>{{ Commodity_obj.quantity_in }}</td>
                <td>{{ Commodity_obj.sales_volume }}</td>
                <td>{{ Commodity_obj.return_volume }}</td>
                <td>
                    <button class="del_button" inventory={{ Commodity_obj.inventory }} batch={{ Commodity_obj.batch }} c_id={{ Commodity_obj.id }}>出售</button>
                </td>

            </tr>
        {% endfor %}


        </tbody>
    </table>
{% endblock %}
{% block new_js %}
    <script>
        var del_button = document.querySelectorAll('.del_button')
        for (var index = 0; index < del_button.length; index++) {
            del_button[index].onclick = function () {
                if (confirm('是否确定出售')) {
                    var selling_price = parseFloat(prompt('出售价格'));
                    var sales_volume = parseInt(prompt('出售数量'));
                    var c_id = this.getAttribute('c_id');
                    var inventory = this.getAttribute('inventory');
                    if(sales_volume<=inventory){
                                 $.ajax({
                        url: /sales/,
                        type: 'post',
                        data: {
                            'c_id': c_id,
                            'selling_price': selling_price,
                            'sales_volume': sales_volume,
                            'csrfmiddlewaretoken': '{{csrf_token}}'
                        },
                        success: function (msg) {
                            alert(msg)
                            window.location.replace('/sales/')
                    }
                    })
                    }else {
                        alert('库存不足')
                    }

                }
            }
        }
    </script>
{% endblock %}

退货return.html

{% extends 'template.html' %}
{% block title_text %}
    删除商品库存
{% endblock %}
{% block new_css %}
{% endblock %}
{% block data %}
    <table class="table table-hover">
        <thead>
        <tr>
            <th></th>
            <th>商品名</th>
            <th>商品批号</th>
            <th>库存</th>
            <th>总成本</th>
            <th>总销售额</th>
            <th>进货总数量</th>
            <th>销售量总数量</th>
            <th>退货总数量</th>
            <th>退货</th>
        </tr>
        </thead>
        <tbody>
        {% for Commodity_obj in Commodity_list %}
            <tr>
                <th scope="row">1</th>
                <td>{{ Commodity_obj.name }}</td>
                <td>{{ Commodity_obj.batch }}</td>
                <td>{{ Commodity_obj.inventory }}</td>
                <td>{{ Commodity_obj.cost }}</td>
                <td>{{ Commodity_obj.selling_price }}</td>
                <td>{{ Commodity_obj.quantity_in }}</td>
                <td>{{ Commodity_obj.sales_volume }}</td>
                <td>{{ Commodity_obj.return_volume }}</td>
                <td>
                    <button class="del_button" inventory={{ Commodity_obj.inventory }} batch={{ Commodity_obj.batch }} c_id={{ Commodity_obj.id }}>退货</button>
                </td>

            </tr>
        {% endfor %}


        </tbody>
    </table>
{% endblock %}
{% block new_js %}
    <script>
        var del_button = document.querySelectorAll('.del_button')
        for (var index = 0; index < del_button.length; index++) {
            del_button[index].onclick = function () {
                if (confirm('是否确定退货')) {
                    var selling_price = parseFloat(prompt('退货单价'));
                    var sales_volume = parseInt(prompt('退货数量'));
                    var c_id = this.getAttribute('c_id');
                    var inventory = this.getAttribute('inventory');
                    if(sales_volume<=inventory){
                                 $.ajax({
                        url: /return/,
                        type: 'post',
                        data: {
                            'c_id': c_id,
                            'selling_price': selling_price,
                            'sales_volume': sales_volume,
                            'csrfmiddlewaretoken': '{{csrf_token}}'
                        },
                        success: function (msg) {
                            alert(msg)
                            window.location.replace('/return/')
                    }
                    })
                    }else {
                        alert('库存不足')
                    }

                }
            }
        }
    </script>
{% endblock %}

删除商品del.html

{% extends 'template.html' %}
{% block title_text %}
    删除商品库存
{% endblock %}
{% block new_css %}
{% endblock %}
{% block data %}
    <table class="table table-hover">
        <thead>
        <tr>
            <th></th>
            <th>商品名</th>
            <th>商品批号</th>
            <th>库存库存</th>
            <th>总成本</th>
            <th>总销售额</th>
            <th>进货总数量</th>
            <th>销售量总数量</th>
            <th>退货总数量</th>
            <th>是否删除</th>
        </tr>
        </thead>
        <tbody>
        {% for Commodity_obj in Commodity_list %}
            <tr>
                <th scope="row">1</th>
                <td>{{ Commodity_obj.name }}</td>
                <td>{{ Commodity_obj.batch }}</td>
                <td>{{ Commodity_obj.inventory }}</td>
                <td>{{ Commodity_obj.cost }}</td>
                <td>{{ Commodity_obj.selling_price }}</td>
                <td>{{ Commodity_obj.quantity_in }}</td>
                <td>{{ Commodity_obj.sales_volume }}</td>
                <td>{{ Commodity_obj.return_volume }}</td>
                <td>
                    <button class="del_button" c_id={{ Commodity_obj.id }}>删除</button>
                </td>

            </tr>
        {% endfor %}


        </tbody>
    </table>
{% endblock %}
{% block new_js %}
    <script>
        var del_button = document.querySelectorAll('.del_button')
        for (var index = 0; index < del_button.length; index++) {
            del_button[index].onclick = function () {
                if (confirm('是否确定删除')) {
                    var c_id = this.getAttribute('c_id');
                    $.ajax({
                        url: /del/,
                        type: 'post',
                        data: {
                            'c_id': c_id,
                            'csrfmiddlewaretoken': '{{csrf_token}}'
                        },
                        success: function (msg) {
                            alert(msg)
                            window.location.replace('/del/')
                    }
                    })
                }
            }
        }
    </script>
{% endblock %}

展示show.html

{% extends 'template.html' %}
{% block title_text %}
    查看商品
{% endblock %}
{% block new_css %}
{% endblock %}
{% block data %}
<table class="table table-hover">
      <thead>
        <tr>
          <th></th>
          <th>商品名</th>
          <th>批号</th>
          <th>库存库存</th>
          <th>总成本</th>
          <th>总销售额</th>
          <th>进货总数量</th>
          <th>销售量总数量</th>
          <th>退货总数量</th>
        </tr>
      </thead>
      <tbody>
        {% for Commodity_obj in Commodity_list %}
            <tr>
          <th scope="row">1</th>
          <td>{{ Commodity_obj.name}}</td>
          <td>{{ Commodity_obj.batch}}</td>
          <td>{{ Commodity_obj.inventory}}</td>
          <td>{{ Commodity_obj.cost}}</td>
          <td>{{ Commodity_obj.selling_price}}</td>
          <td>{{ Commodity_obj.quantity_in}}</td>
          <td>{{ Commodity_obj.sales_volume}}</td>
          <td>{{ Commodity_obj.return_volume}}</td>

        </tr>
        {% endfor %}


      </tbody>
    </table>
{% endblock %}
{% block new_js %}
{% endblock %}

展示删除show_del.html

{% extends 'template.html' %}
{% block title_text %}
    删除商品查看及还原
{% endblock %}
{% block new_css %}
{% endblock %}
{% block data %}
    <table class="table table-hover">
        <thead>
        <tr>
            <th></th>
            <th>商品名</th>
            <th>商品批号</th>
            <th>库存库存</th>
            <th>总成本</th>
            <th>总销售额</th>
            <th>进货总数量</th>
            <th>销售量总数量</th>
            <th>退货总数量</th>
            <th>是否还原</th>
        </tr>
        </thead>
        <tbody>
        {% for Commodity_obj in Commodity_list %}
            <tr>
                <th scope="row">1</th>
                <td>{{ Commodity_obj.name }}</td>
                <td>{{ Commodity_obj.batch }}</td>
                <td>{{ Commodity_obj.inventory }}</td>
                <td>{{ Commodity_obj.cost }}</td>
                <td>{{ Commodity_obj.selling_price }}</td>
                <td>{{ Commodity_obj.quantity_in }}</td>
                <td>{{ Commodity_obj.sales_volume }}</td>
                <td>{{ Commodity_obj.return_volume }}</td>
                <td>
                    <button class="del_button" c_id={{ Commodity_obj.id }}>还原</button>
                </td>

            </tr>
        {% endfor %}


        </tbody>
    </table>
{% endblock %}
{% block new_js %}
    <script>
        var del_button = document.querySelectorAll('.del_button')
        for (var index = 0; index < del_button.length; index++) {
            del_button[index].onclick = function () {
                if (confirm('是否确定还原')) {
                    var c_id = this.getAttribute('c_id');
                    $.ajax({
                        url: /show_del/,
                        type: 'post',
                        data: {
                            'c_id': c_id,
                            'csrfmiddlewaretoken': '{{csrf_token}}'
                        },
                        success: function (msg) {
                            alert(msg)
                            window.location.replace('/show_del/')
                    }
                    })
                }
            }
        }
    </script>
{% endblock %}

五.自动生成项目目录树状图

import os
def dirsTree():
    PATH = os.path.dirname(__file__)
    print(PATH)
    lis = os.listdir(PATH)
    if lis != None:
        for a in lis:
            print(f'|___{a}')
            if '.' not in a:
                a_path = os.path.join(PATH,a)
                lis_2 = os.listdir(a_path)
                if lis_2 != None:
                    for b in lis_2:
                        if b != '__pycache__':
                            print(f'|    |___{b}')
if __name__ == '__main__':                  
    dirsTree()
 #弄了两级也没有用递归来做啦