python3 django2开发个人商城网站(自定义用户表保持登录状态功能)

     最近想学爬虫，但是呢，我想搭建一个网站来熟悉一下网页中的东西，我起初的想法是做一个个人博客网站，我django项目都创建了，我用了几天的时间来构思这个网站应该怎么做，正当我在构思的时候，我突然有了一个灵感，那就是我暑假放弃了的个人商城demo，于是我就用这个框架来做了我的个人商城网站。说这么多，主要是想解释我这个项目的命名为什么是my_blog了，而不是不是以shopping命名的项目了。好了，下面进入正题吧。

      这里我先简单说一下这个网站能实现哪些功能，能够浏览商品，搜索商品，购买商品功能（没有付款接口，当然只是模拟付款），购物车功能，登录功能（没有用django自带的用户表，含验证登录与保持登录功能）。

      我先说一下我做这个项目的版本：python3.6.3,  django2.0.5用到的前端框架是bootstrap-3.3.7。这里我需要提一点，这个项目应该适合做过django项目的同学，最少也要使用django框架连接过数据库。不然做这个项目将会很吃力。

     好了，我先上一下效果图吧。

 商城首页：

 

点击导航栏中的‘男装’。

 

   图片就贴到这里吧，不能都贴出来，不然就太垮了。我把项目的构架先贴出来

项目的第一步，一定是数据表，数据关系一定要先规划好，不然很有可能使项目做到一半需要大改，这样的话就非常伤脑筋了。这里我贴出models.py的代码。别忘了命令行python manage.py makemigrations ,  python mange.py migrate迁移数据库文件，与映射数据表到数据库。

from django.db import models
#用户表
class User(models.Model):
    username = models.CharField(max_length=30, unique=True)
    password = models.CharField(max_length=30)
    ismerchant = models.BooleanField(default=False) #是否是商人
    merchant_name = models.CharField(max_length=30, blank=True)
    merchant_iphone = models.CharField(max_length=11, blank=True)

#商品表
class Commodity(models.Model):
    types = (
        (1, '请选择商品的类别'),
        ('男装', '男装'),
        ('美妆', '美妆'),
        ('手机', '手机'),
        ('食品', '食品'),
        ('电器', '电器'),
        ('鞋包', '鞋包'),
        ('百货', '百货'),
        ('女装', '女装'),
        ('汽车', '汽车'),
        ('水果', '水果'),
        ('运动', '运动'),
        ('电脑', '电脑'),
        ('家纺', '家纺'),
        ('内衣', '内衣'),
        ('家装', '家装'),
        ('母婴', '母婴'),
        ('家居', '家居'),
        ('文具', '文具'),
        ('其他', '其他'),
    )
    merchant_commodity_id = models.ForeignKey(User, to_field='username', on_delete=models.DO_NOTHING)
    commodity_name = models.CharField(max_length=30)
    commodity_introdice = models.CharField(max_length=255)
    commodity_image = models.ImageField(upload_to = 'img')#自动存储到media中的img文件夹中
    commodity_price = models.CharField(max_length=20, default='0')
    commodity_store = models.CharField(max_length=10, default='none')
    commodity_sort = models.CharField(max_length=10, choices=types)
    date_issused = models.DateTimeField(auto_now=True)
    class Meta:
        #按上架时间倒序排序
        ordering = ['-date_issused']

#购物车
class Shopping_Cat(models.Model):
    commodity_id = models.CharField(max_length=10 , blank=True)#商品id
    commodity_introdice = models.CharField(max_length=255, blank=True)#商品介绍
    commodity_image = models.CharField(max_length=200, blank=True)
    buy_number = models.CharField(max_length=50, blank=True)#购买数量
    number_price = models.CharField(max_length=50, blank=True)#总数量
    commodity_price = models.CharField(max_length=50, blank=True)
    merchant_name = models.CharField(max_length=30, blank=True)#卖家名字
    merchant_iphone = models.CharField(max_length=11, blank=True)
    merchant_username = models.CharField(max_length=30, blank=True)
    cusstomer_name = models.CharField(max_length=30, blank=True)#买家名字
    cusstomer_iphone = models.CharField(max_length=11, blank=True)
    cusstomer_username = models.CharField(max_length=30, blank=True)
    receive_iphone = models.CharField(max_length=11, blank=True)#收件人名字
    receive_name = models.CharField(max_length=50, blank=True)
    receive_adress = models.CharField(max_length=100, blank=True)
    date_issused = models.DateTimeField(auto_now=True)
    class Meta:
        #按加入购物车的时间倒序排序
        ordering = ['-date_issused']

#下单表，这里的字段属性和购物车的表一样
class Indent(models.Model):
    commodity_id = models.CharField(max_length=10 , blank=True)
    commodity_introdice = models.CharField(max_length=255, blank=True)
    commodity_image = models.CharField(max_length=200, blank=True)
    buy_number = models.CharField(max_length=50, blank=True)
    number_price = models.CharField(max_length=50, blank=True)
    commodity_price = models.CharField(max_length=50, blank=True)
    merchant_name = models.CharField(max_length=30, blank=True)
    merchant_iphone = models.CharField(max_length=11, blank=True)
    merchant_username = models.CharField(max_length=30, blank=True)
    cusstomer_name = models.CharField(max_length=30, blank=True)
    cusstomer_iphone = models.CharField(max_length=11, blank=True)
    cusstomer_username = models.CharField(max_length=30, blank=True)
    receive_iphone = models.CharField(max_length=11, blank=True)
    receive_name = models.CharField(max_length=50, blank=True)
    receive_adress = models.CharField(max_length=100, blank=True)
    date_issused = models.DateTimeField(auto_now=True)
    class Meta:
        #按购买的时间倒序排序
        ordering = ['-date_issused']

将数据表注册到django后台代码，可以在django后台添加数据。

from django.contrib import admin
from .models import Commodity, User, Shopping_Cat, Indent

class CommodityAdmin(admin.ModelAdmin):
    list_display = ['id', 'merchant_commodity_id', 'commodity_name', 'commodity_sort', 'commodity_introdice', 'commodity_image', 'commodity_price', 'commodity_store', 'date_issused']
admin.site.register(Commodity, CommodityAdmin)
class UserAdmin(admin.ModelAdmin):
    list_display = ['username', 'password', 'ismerchant', 'merchant_name' ,'merchant_iphone']
admin.site.register(User, UserAdmin)
class Shopping_CatAdmin(admin.ModelAdmin):
    list_display = ['commodity_id', 'commodity_introdice', 'buy_number', 'number_price', 'commodity_price', 'merchant_name', 'cusstomer_name', 'receive_name', 'receive_adress' ]
admin.site.register(Shopping_Cat, Shopping_CatAdmin)
class IndentAdmin(admin.ModelAdmin):
    list_display = ['commodity_id', 'commodity_introdice', 'buy_number', 'number_price', 'commodity_price', 'merchant_name', 'cusstomer_name', 'receive_name', 'receive_adress' ]
admin.site.register(Indent, IndentAdmin)

urls.py的配置。我由于想快速开发我的网站，我就没有将url include分开来写。

"""my_blog URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/2.0/topics/http/urls/
Examples:
Function views
    1. Add an import:  from my_app import views
    2. Add a URL to urlpatterns:  path('', views.home, name='home')
Class-based views
    1. Add an import:  from other_app.views import Home
    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
Including another URLconf
    1. Import the include() function: from django.urls import include, path
    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
"""
from django.contrib import admin
from django.urls import path, re_path
from django.conf.urls.static import static
from django.views.static import serve
from . import settings
from blogs import views
urlpatterns = [
    path('admin/', admin.site.urls),
    #meidia的相关配置
    re_path(r'media/(?P.*)$', serve, {'document_root':settings.MEDIA_ROOT}),
    path('', views.index, name= 'home'),
    path('', views.commodity_details, name='commodity_detail'),
    path('search/commodity', views.search_commodity, name = 'search_commodity'),
    path('search/', views.search_sort, name = 'search_sort'),
    path('login', views.login, name = 'login'),
    path('user_login', views.user_login, name = 'user_login'),
    path('user_register', views.user_register, name = 'user_register'),
    path('buy_detail_', views.buy_detail, name = 'buy_detail'),
    path('buy_success_', views.buy_success, name = 'buy_success'),
    path('shopping_cat_', views.shopping_cat, name = 'shopping_cat'),
    path('add_shopping_cat_success_', views.add_shopping_cat_success, name = 'add_shopping_cat_success'),
    path('my_shopping_cart', views.my_shopping_cart, name = 'my_shopping_cart'),
    path('change_indent_', views.change_indent, name = 'change_indent'),
    path('change_success_', views.change_success, name= 'change_success'),
    path('delete_success_', views.delete_cat, name= 'delete_success'),

]
# urlpatterns += static(settings.MEDIA_URL, document_root = settings.MEDIA_ROOT)

 

逻辑代码的话我加上注释就直接贴出来了。

from django.shortcuts import render,HttpResponse, redirect, HttpResponseRedirect
import random
from .models import Commodity, User, Indent, Shopping_Cat




def index(request):
    #定义一个空字典，将要展示的商品存放到页面上
    context = {}
    sorts = Commodity.objects.all()
    random_names = []
    for sort in sorts:
        random_names.append(sort.commodity_name)
    random_name = random.sample(random_names,1)
    context['random_name'] = ''.join(random_name)
    commoditys = Commodity.objects.order_by('?')[:30]
    commodity_sorts = ['男装', '美妆', '手机', '食品', '电器', '鞋包', '百货', '女装', '汽车', '水果', '运动', '电脑', '家纺', '内衣', '家装', '母婴', '家居', '文具', '其他']
    context['commodity_sorts'] =  commodity_sorts
    context['commoditys'] = commoditys
    context['username'] = request.session.get('username')
    return render(request, 'commodity.html', context=context)

#用于展示商品的详情页

def commodity_details(request, id):
    commodity_detail = Commodity.objects.filter(id = id).first()
    context = {}
    context['commodity_detail'] =  commodity_detail
    context['hide'] = 'display: none;'#传给前端，让前端视图隐藏
    context['username'] = request.session.get('username')
    context['id'] = id
    return render(request, 'commodity_detail.html' ,context=context)



#根据搜索栏中的关键词查找商品
def search_commodity(request):
    keys = request.GET.get('search', '')
    commodity_search = Commodity.objects.all()
    context = {}
    search_result = []
    sorts = Commodity.objects.all()
    random_names = []
    for sort in sorts:
        random_names.append(sort.commodity_name)
    random_name = random.sample(random_names,1)
    context['random_name'] = ''.join(random_name)
    context['username'] = request.session.get('username')
    commodity_sorts = ['男装', '美妆', '手机', '食品', '电器', '鞋包', '百货', '女装', '汽车', '水果', '运动', '电脑', '家纺', '内衣', '家装', '母婴', '家居', '文具', '其他']
    context['commodity_sorts'] =  commodity_sorts
    for i in commodity_search:
        if keys in str(i.commodity_introdice):
            search_result.append(i)
        elif keys in str(i.commodity_sort):
            search_result.append(i)
    if search_result == []:
        context['message'] = '对不起。商城没有找到你想搜索的商品！'
    else:
        context['commoditys'] = search_result
    return render(request, 'commodity.html',context=context)
#搜索栏下方的导航栏的方法
def search_sort(request, sort):
    context = {}
    sorts = Commodity.objects.all()
    random_names = []
    for sor in sorts:
        random_names.append(sor.commodity_name)
    #随机取一条数据放入搜索框
    random_name = random.sample(random_names,1)
    context['random_name'] = ''.join(random_name)
    #根据商品类别的查找
    commoditys = Commodity.objects.filter(commodity_sort= sort)
    context['commoditys'] = commoditys
    #获取session判断用户是登录状态
    context['username'] = request.session.get('username')
    commodity_sorts = ['男装', '美妆', '手机', '食品', '电器', '鞋包', '百货', '女装', '汽车', '水果', '运动', '电脑', '家纺', '内衣', '家装', '母婴', '家居', '文具', '其他']
    context['commodity_sorts'] =  commodity_sorts
    return render(request, 'commodity.html' , context=context)

#进入登录页面
def login(request):
    return render(request, 'login.html')

#登录功能
def user_login(request):
    if request.method == 'POST':
        username = request.POST.get('username', '')
        password = request.POST.get('password', '')
        #验证登录
        users = User.objects.filter(username=username, password=password)
        if username == '' or password =='':
            return render(request, 'login.html',{'message':'用户名和密码不能为空'})
        if users:
            # request.session['is_login'] = '1'
            #登录后给浏览器发送登录者的用户名（保持登录状态）
            request.session['username'] = users[0].username
            #设置保持登录时间  参数0表示Cookie将在用户的浏览器关闭时过期，None表示永不过期，整数表示在多少秒后过期
            request.session.set_expiry(0)
            return HttpResponseRedirect(request.POST.get('next', '/') or '/')
    return render(request, 'login.html',{'message':'用户名或密码错误'})

#用户注册功能
def user_register(request):
    if request.method == 'POST':
        username = request.POST.get('register_username', '')
        password = request.POST.get('register_password', '')
        again_password = request.POST.get('again_password', '')
        merchant_iphone = request.POST.get('merchant_iphone', '')
        merchant_name = request.POST.get('merchant_name', '')
        username_exist = User.objects.filter(username = username)
        if username_exist:
            return render(request, 'register.html', {'message': '用户名已存在'})
        elif password != again_password:
            return render(request, 'register.html', {'message': '两次密码输入不一致'})
        else:
            User.objects.create(username = username, password = password, merchant_name = merchant_name, merchant_iphone =merchant_iphone).save()
            return render(request, 'login.html')
    return render(request, 'register.html')

#购买详情页
def buy_detail(request, id):
    commodity = Commodity.objects.filter(id = id).first()
    context={}
    context['commodity_name'] = commodity.commodity_name
    context['commodity_image'] = commodity.commodity_image
    context['commodity_store'] = commodity.commodity_store
    context['commodity_price'] = commodity.commodity_price
    context['id'] = id
    username = request.session.get('username')
    if username:
        users = User.objects.filter(username=username).first()
        context['merchant_name'] = users.merchant_name
        context['merchant_iphone'] = users.merchant_iphone
        context['hide'] = 'display: none;'
        context['username'] = username
        return render(request, 'buy_detail.html',context = context)
    else:
        return render(request, 'login.html')

#立即下单购买成功
def buy_success(requset ,id):
    if requset.method == 'POST':
        users = Commodity.objects.filter(id = id).first()
        cusstomer = User.objects.filter(username=requset.session.get('username')).first()
        context={}
        context['id'] = id
        context['commodity_introdice'] = users.commodity_introdice
        context['commodity_image'] = users.commodity_image
        context['commodity_price'] = users.commodity_price
        print(type(context['commodity_price']))
        context['buy_number'] = requset.POST.get('buy_number', '')
        context['number_price'] = requset.POST.get('number_price', '')
        context['province'] = requset.POST.get('province', '')
        context['town'] = requset.POST.get('town', '')
        context['area'] = requset.POST.get('area', '')
        context['merchant_username'] = users.merchant_commodity_id.username
        context['merchant_iphone'] = users.merchant_commodity_id.merchant_iphone
        context['merchant_name'] = users.merchant_commodity_id.merchant_name
        context['cusstomer_name'] = cusstomer.merchant_name
        context['cusstomer_iphone'] = cusstomer.merchant_iphone
        context['cusstomer_username'] = cusstomer.username
        context['address_detail'] = requset.POST.get('address_detail', '')
        context['address'] = context['province'] + '省 ' + context['town'] + ' ' +context['area'] + ' ' + context['address_detail']
        context['address_name'] = requset.POST.get('address_name', '')
        context['address_iphone']  = requset.POST.get('address_iphone', '')
        Indent.objects.create(commodity_id=id,commodity_introdice=context['commodity_introdice'],commodity_image=context['commodity_image'] ,
                              buy_number = context['buy_number'], number_price=context['number_price'],commodity_price=context['commodity_price'],
                              merchant_name=context['merchant_name'],merchant_iphone=context['merchant_iphone'],merchant_username=context['merchant_username'],
                              cusstomer_name=context['cusstomer_name'], cusstomer_iphone =context['cusstomer_iphone'],cusstomer_username=context['cusstomer_username'],
                              receive_iphone= context['address_iphone'],receive_name=context['address_name'],receive_adress=context['address']).save()
        return render(requset, 'buy_success.html', context= context)
    return render(requset, 'buy_detail.html.html')

#加入购物车
def shopping_cat(request, id):
    commodity = Commodity.objects.filter(id = id).first()
    context={}
    context['commodity_name'] = commodity.commodity_name
    context['commodity_image'] = commodity.commodity_image
    context['commodity_store'] = commodity.commodity_store
    context['commodity_price'] = commodity.commodity_price
    context['id'] = id
    username = request.session.get('username')
    if username:
        users = User.objects.filter(username=username).first()
        context['merchant_name'] = users.merchant_name
        context['merchant_iphone'] = users.merchant_iphone
        context['hide'] = 'display: none;'
        context['username'] = username
        return render(request, 'shopping_cat.html',context = context)
    else:
        return render(request, 'login.html')

#加入购物车成功
def add_shopping_cat_success(requset ,id):
    if requset.method == 'POST':
        users = Commodity.objects.filter(id = id).first()
        cusstomer = User.objects.filter(username=requset.session.get('username')).first()
        context={}
        context['id'] = id
        context['commodity_introdice'] = users.commodity_introdice
        context['commodity_image'] = users.commodity_image
        context['commodity_price'] = users.commodity_price
        context['buy_number'] = requset.POST.get('buy_number', '')
        context['number_price'] = requset.POST.get('number_price', '')
        context['province'] = requset.POST.get('province', '')
        context['town'] = requset.POST.get('town', '')
        context['area'] = requset.POST.get('area', '')
        context['merchant_username'] = users.merchant_commodity_id.username
        context['merchant_iphone'] = users.merchant_commodity_id.merchant_iphone
        context['merchant_name'] = users.merchant_commodity_id.merchant_name
        context['cusstomer_name'] = cusstomer.merchant_name
        context['cusstomer_iphone'] = cusstomer.merchant_iphone
        context['cusstomer_username'] = cusstomer.username
        context['address_detail'] = requset.POST.get('address_detail', '')
        context['address'] = context['province'] + '省 ' + context['town'] + ' ' +context['area'] + ' ' + context['address_detail']
        context['address_name'] = requset.POST.get('address_name', '')
        context['address_iphone']  = requset.POST.get('address_iphone', '')
        Shopping_Cat.objects.create(commodity_id=id,commodity_introdice=context['commodity_introdice'],commodity_image=context['commodity_image'] ,
                              buy_number = context['buy_number'], number_price=context['number_price'],commodity_price=context['commodity_price'],
                              merchant_name=context['merchant_name'],merchant_iphone=context['merchant_iphone'],merchant_username=context['merchant_username'],
                              cusstomer_name=context['cusstomer_name'], cusstomer_iphone =context['cusstomer_iphone'],cusstomer_username=context['cusstomer_username'],
                              receive_iphone= context['address_iphone'],receive_name=context['address_name'],receive_adress=context['address']).save()
        return render(requset, 'add_shopping_cat_success.html', context= context)
    return render(requset, 'buy_detail.html.html')

def my_shopping_cart(request):
    username = request.session.get('username')
    if username :
        shopping_cart = Shopping_Cat.objects.filter(cusstomer_username = username)
        context = {}
        context['username'] = username
        context['shopping_cart'] = shopping_cart
        context['hide'] = 'display: none;'
        return render(request, 'my_shopping_cart.html',context=context)
    return render(request,'login.html')

def change_indent(request, id):
    change_cat = Shopping_Cat.objects.filter(id = id).first()
    context = {}
    context['change_cat'] = change_cat
    context['province'] = change_cat.receive_adress.split(' ')[0]
    context['town'] = change_cat.receive_adress.split(' ')[1]
    context['area'] = change_cat.receive_adress.split(' ')[2]
    commodity = Commodity.objects.filter(id = change_cat.commodity_id).first()
    context['commodity'] = commodity.commodity_store
    return render(request, 'change_indent.html', context=context)
def change_success(request, id):
    context = {}
    if request.method == 'POST':
        context['buy_number'] = request.POST.get('buy_number', '')
        shopping_cats = Shopping_Cat.objects.get(id = id)
        context['province'] = request.POST.get('province', '')
        context['town'] = request.POST.get('town', '')
        context['area'] = request.POST.get('area', '')
        context['address_detail'] = request.POST.get('address_detail', '')
        context['address_name'] = request.POST.get('address_name', '')
        context['number_price'] = request.POST.get('number_price', '')
        context['address_iphone']  = request.POST.get('address_iphone', '')
        context['username'] = request.session.get('username')
        shopping_cart = Shopping_Cat.objects.filter(cusstomer_username = context['username'])
        context['shopping_cart'] = shopping_cart
        context['hide'] = 'display: none;'
        context['address'] = context['province'] + '省 ' + context['town'] + ' ' +context['area'] + ' ' + context['address_detail']
        shopping_cats.buy_number = context['buy_number']
        shopping_cats.receive_adress = context['address']
        shopping_cats.receive_name = context['address_name']
        shopping_cats.number_price = context['number_price']
        shopping_cats.receive_iphone = context['address_iphone']
        shopping_cats.save()
        return render(request, 'my_shopping_cart.html', context = context)
    return render(request, 'commodity.html')
def delete_cat(request ,id):
    context = {}
    context['username'] = request.session.get('username')
    shopping_cats = Shopping_Cat.objects.get(id = id)
    shopping_cats.delete()
    shopping_cart = Shopping_Cat.objects.filter(cusstomer_username = context['username'])
    context['shopping_cart'] = shopping_cart
    context['hide'] = 'display: none;'
    return render(request, 'my_shopping_cart.html', context =context)

 

这里就不贴前端代码了，我等下将我的那个项目的链接直接附在下面，等会你们可以直接前往下载。

https://download.csdn.net/download/qq_41983562/11106925

也可以关注公众号留言免费领取

 

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链接：https://pan.baidu.com/s/1fRtYfN-_jfLYa81XNEfsQQ 
提取码：wxod