Django 搭建数据管理web——商品管理

教材：

python web 企业级项目开发教程黑马程序员 5.4 实例1：商品管理

实验步骤：

1.创建项目（任意名字）和应用（goods）

2.在项目文件夹（manage.py文件所在路径）新建templates文件夹，在其中新建good.html

html 复制代码

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="utf-8">
    <title>商品列表</title>
</head>
<body>
<div>
	<table cellpadding="1" cellspacing="0" border="1" style="width:100%;max-width:100%;
    margin-bottom:20px">
    <caption align="top" style="font-size:26px">商品列表</caption>
    <thead>
    <tr>
    	<th>编号</th>
        <th>名字</th>
        <th>价格</th>
        <th>库存</th>
        <th>销量</th>
        <th>管理</th>
	</tr>
    </thead>
    <tfoot align="right">
    </tfoot>
    <tbody>
    {% for row in goods %}
    	<tr align="center">
    		<td>{{ forloop.counter }}</td>
        	<td>{{ row.name }}</td>
        	<td>{{ row.price }}</td>
       	 	<td>{{ row.stock }}</td>
        	<td>{{ row.sales }}</td>
        	<td><a href="/delete{{ row.id }}">删除</a></td>
		</tr>
    	{% endfor %}
    </tbody>
    </table>
</div>
</body>
</html>

3.修改应用goods的models.py文件

python 复制代码

from django.db import models
class Goods(models.Model):
    create_time=models.DateTimeField(auto_now_add=True,verbose_name="创建时间")
    update_time=models.DateTimeField(auto_now=True,verbose_name="更新时间")
    name =models.CharField(max_length=50,verbose_name="名字")
    price=models.DecimalField(max_digits=10,decimal_places=2,verbose_name="价格")
    stock=models.IntegerField(default=0,verbose_name='库存')
    sales=models.IntegerField(default=0,verbose_name='销量')
    class Meta:
        db_table = 'tb_goods'
        verbose_name='商品'
        verbose_name_plural=verbose_name
    def _str_(self):
        return '%s: %s' % (self.id,self.name)

4.修改应用goods的views.py文件

python 复制代码

from django.shortcuts import render,loader
from django import http
from .models import Goods
def get_goods(request):
    t = loader.get_template('good.html')
    goods = Goods.objects.all()
    context = {'goods':goods,}
    response = t.render(context,request)
    return http.HttpResponse(response)
def del_good(request,gid):
    good = Goods.objects.get(id=gid)
    good.delete()
    return http.HttpResponseRedirect('/')

5.修改主路由

python 复制代码

from django.contrib import admin
from django.urls import path,include,re_path

urlpatterns = [
    path('admin/', admin.site.urls),
    re_path('^',include('goods.urls')),
]

6.在应用goods下，新建urls.py文件，内容如下

python 复制代码

from django.urls import path,re_path
from . import views
urlpatterns = [
    re_path(r'^$',views.get_goods),
    re_path(r'^delete(\d+)$',views.del_good),
    ]

7.修改settings.py文件

python 复制代码

#34line
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'goods',
]

#56 line
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',
            ],
        },
    },
]

8.生成迁移文件

py manage.py migrations

py manage.py migrate

9.进入python shell，添加数据记录

python 复制代码

#先执行
py manage.py shell
#引入 from 应用名.models import 类名
from good.models import Goods
Goods.objects.create(name="test1",price="10",stock="50",sales="30")
Goods.objects.create(name="test2",price="20",stock="50",sales="30")
Goods.objects.create(name="test3",price="30",stock="50",sales="30")

10.开启服务

py manage.py runservser

11.测试并完成