经过一段时间的准备,新的一期【ASP.NET Core MVC开发实战之商城系统】已经开始,在之前的文章中,讲解了商城系统的整体功能设计,页面布局设计,环境搭建,系统配置,及首页商品类型,banner条,友情链接等功能的开发,今天继续讲解首页的降价促销,新品爆款等内容,仅供学习分享使用,如有不足之处,还请指正。
开发工具及技术
在本商城系统实例中,主要用到的开发工具和技术,如下所示:
- 开发工具,Visual Studio 2022
- 数据库,SQL Server Management Studio 2012
- 开发框架,基于.Net 6.0的ASP.NET Core MVC
- 前端框架,基于项目自带的bootstrap,jQuery等前端库。
页面布局
根据前一篇文章的讲解,在首页除了商品类型,banner条,友情链接外,还有降价促销,新品爆款两个部分,为首页产品展示的核心,具体布局如下所示:
数据表设计
首先设计产品表Product,主要用于存储产品的详细信息,包括产品名称,价格,店铺ID等内容,具体如下所示:
建表语句,如下所示:
CREATE TABLE [dbo].[EB_Product](
[Id] [bigint] IDENTITY(1,1) NOT NULL,
[ShopId] [bigint] NULL,
[Name] [varchar](100) NULL,
[CategoryId] [bigint] NULL,
[SubCategoryId] [bigint] NULL,
[Price] [money] NULL,
[Preferential] [numeric](18, 4) NULL,
[PreferentialPrice] [money] NULL,
[Description] [text] NULL,
[Brand] [varchar](50) NULL,
[BasicStyle] [varchar](50) NULL,
[ProductStyle] [varchar](50) NULL,
[Year] [varchar](50) NULL,
[Season] [varchar](50) NULL,
[Scenario] [varchar](50) NULL,
[ImageUrl] [varchar](500) NULL,
[CreateTime] [datetime] NULL,
[CreateUser] [varchar](50) NULL,
[LastEditTime] [datetime] NULL,
[LastEditUser] [varchar](50) NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
商品实体创建
产品表对应的项目模型实体,和数据表一一对应,如下所示:
using SqlSugar;
namespace EasyBuyShop.Models
{
[SugarTable("EB_Product")]
public class Product : EntityModel
{
/// <summary>
/// 店铺ID
/// </summary>
public long ShopId { get; set; }
/// <summary>
/// 产品名称
/// </summary>
public string Name { get; set; }
/// <summary>
/// 大类ID
/// </summary>
public long CategoryId { get; set; }
/// <summary>
/// 小类ID
/// </summary>
public long SubCategoryId { get; set; }
/// <summary>
/// 价格
/// </summary>
public decimal Price { get; set; }
/// <summary>
/// 打折后价格
/// </summary>
public decimal PreferentialPrice { get; set; }
/// <summary>
/// 品牌
/// </summary>
public string Brand { get; set; }
/// <summary>
/// 折扣
/// </summary>
public decimal Preferential { get; set; }
public string Description { get; set; }
/// <summary>
/// 基础风格
/// </summary>
public string BasicStyle { get; set; }
/// <summary>
/// 产品风格
/// </summary>
public string ProductStyle { get; set; }
/// <summary>
/// 年份
/// </summary>
public string Year { get; set; }
/// <summary>
/// 季节
/// </summary>
public string Season { get; set; }
/// <summary>
/// 主要场景
/// </summary>
public string Scenario { get; set; }
/// <summary>
/// 主图片Url
/// </summary>
public string ImageUrl { get; set; }
}
}
数据处理层DAL
数据处理层用于和数据库进行交互,本次主要用于获取折扣Top3,和新品Top100这两种条件的的商品列表,如下所示:
using EasyBuyShop.Models;
using EasyBuyShop.Utils;
namespace EasyBuyShop.DAL
{
public class ProductDal:BaseDal
{
/// <summary>
/// 新品前100
/// </summary>
/// <returns></returns>
public List<Product> GetTopNew100()
{
try
{
using (var db = this.GetDb(BaseDal.ConnStr))
{
return db.Queryable<Product>().OrderByDescending(r => r.Id).Take(100).ToList();
}
}
catch (Exception ex)
{
LogHelper.Fatal(ex.Message);
return new List<Product>();
}
}
/// <summary>
/// 折扣Top3
/// </summary>
/// <returns></returns>
public List<Product> GetTopDisCount3()
{
try
{
using (var db = this.GetDb(BaseDal.ConnStr))
{
return db.Queryable<Product>().OrderByDescending(r => r.Preferential).Take(3).ToList();
}
}
catch (Exception ex)
{
LogHelper.Fatal(ex.Message);
return new List<Product>();
}
}
}
}
注意:上述功能采用SqlSugar自带的方法实现,会根据Lamada表达式生成对应的SQL语句,可减少手写SQL的繁琐。
控制器获取
因为降价促销和新品爆款,也是首页的一部分,所以需要在首页控制器HomeController中,获取对应商品,传递到视图层,如下所示:
using EasyBuyShop.DAL;
using EasyBuyShop.Models;
using Microsoft.AspNetCore.Mvc;
using System.Diagnostics;
namespace EasyBuyShop.Controllers
{
public class HomeController : Controller
{
private readonly ILogger<HomeController> logger;
public HomeController(ILogger<HomeController> logger)
{
this.logger = logger;
}
public IActionResult Index()
{
CategoryDal categoryDal = new CategoryDal();
SubCategoryDal subCategoryDal = new SubCategoryDal();
ProductDal productDal = new ProductDal();
var categories = categoryDal.GetCategories();
var subCategories = subCategoryDal.GetSubCategories();
var topNew100Product = productDal.GetTopNew100();
var topDiscount3Product = productDal.GetTopDisCount3();
ViewData["Categories"] = categories;
ViewData["SubCategories"] = subCategories;
ViewData["TopNew100"] = topNew100Product;
ViewData["TopDiscount3"] = topDiscount3Product;
var username = HttpContext.Session.GetString("username");
var realName = HttpContext.Session.GetString("realname");
ViewBag.Username = username;
ViewBag.RealName = realName;
return View();
}
}
}
注意:控制器方法中,往视图层传递数据采用ViewData和ViewBag实现,也可采用其他方式实现。具体ViewData和ViewBag传递数据之间的差异,可参考之前写的相关文章。
视图层展示
在Views/Home/Index.cshtml视图页面中,降价促销为一行三列,展示降价Top3的商品,具体如下所示:
<!-- banner style 2 start -->
<div class="banner-style-2 pt-100">
<div class="container" style="margin-left:0px;margin-right:0px;padding-right:0px;padding-left:0px;">
<div class="row">
@foreach (var topDiscount in ViewData["TopDiscount3"] as List<Product>)
{
<div class="col-md-4">
<div class="banner-style-2-img mb-res">
<img src="@topDiscount.ImageUrl" alt="">
<div class="banner-style-2-dec">
<h4>@topDiscount.Brand</h4>
<h3>降价 @(Math.Round( topDiscount.Preferential*100,0))% 销售</h3>
<a href="" onclick="javascript:buy(@(topDiscount.Id));return false;">购买</a><br>
</div>
</div>
<div class="shop-title f-left">
<h3><a href="/Product/Detail/@(topDiscount.Id)">@topDiscount.Name</a></h3>
</div>
</div>
}
</div>
</div>
</div>
<!-- banner style 2 end -->
新品爆款为一行四列,展示新品信息,源码如下所示:
<!-- shop area start -->
<div class="portfolio-area pt-100 pb-70" style="padding-top:100px;padding-bottom:70px;">
<div class="container">
<div class="section-title text-center mb-50">
<h2>新品爆款 <i class="fa fa-shopping-cart"></i></h2>
</div>
<div class="row portfolio-style-2">
<div class="grid" style="position: relative; height: 100%;">
@foreach (var topNewProduct in ViewData["TopNew100"] as List<Product>)
{
<div class="col-md-3 col-sm-6 col-xs-12 mb-30">
<div class="single-shop">
<div class="shop-img">
<a href="/Product/Detail/@(topNewProduct.Id)"><img src="@topNewProduct.ImageUrl" alt=""></a>
<div class="shop-quick-view">
<a href="/Product/Detail/@(topNewProduct.Id)" data-toggle="modal" data-target="#quick-view" title="预览">
<i class="pe-7s-look"></i>
</a>
</div>
<div class="price-up-down">
<span class="sale-new">新品</span>
</div>
<div class="button-group">
<a href="#" title="添加购物车" onclick="javascript:addCart(@(topNewProduct.Id));return false;">
<i class="pe-7s-cart"></i>
添加购物车
</a>
<a class="wishlist" href="#" onclick="javascript:buy(@(topNewProduct.Id));return false;" title="立即购买">
<i class="pe-7s-like"></i>
立即购买
</a>
</div>
</div>
<div class="shop-text-all">
<div class="title-color fix">
<div class="shop-title f-left">
<h3><a href="/Product/Detail/@(topNewProduct.Id)">@topNewProduct.Name</a></h3>
</div>
<span class="price f-right">
<span class="new">[email protected]</span>
</span>
</div>
<div class="fix">
<span class="f-left">@(topNewProduct.BasicStyle) | @(topNewProduct.ProductStyle)</span>
</div>
</div>
</div>
</div>
}
</div>
</div>
</div>
</div>
<!-- shop area end -->
注意:其中视图层代码,采用Razor表达式for循环,展示列表中的内容。关于Razor表达式的使用可参考其他文章。
页面展示
降价促销功能,运行如下所示:
新品爆款功能,运行如下所示:
以上就是ASP.NET Core MVC开发实战之商城系统第二部分内容,后续将继续介绍其他模块,敬请期待。
标签:Core,ASP,set,get,MVC,var,varchar,NULL,public From: https://www.cnblogs.com/hsiang/p/17576065.html