首页主要包括两部分,主体部分显示15个最新的的商品,右边则显示10条最新的优惠信息。主体部分可以直接使用传入的数据生成,也可以通过分类列表的方法生成,看个人喜好。而优惠信息则使用分类的方法生成。

      在完成首页前,需要做点准备功夫,因为需要显示评价,所以首先到地址“http://plugins.jquery.com/project/Star_Rating_widget ”下载一个名称为“jQuery UI Stars”的插件。插件下载后,将jquery.ui.stars.css文件添加到Content文件夹,jquery.ui.stars.min.js文件添加到Scripts文件夹,而jquery.ui.stars.gif则放到images文件夹。最后还需要修改一下jquery.ui.stars.css文件中背景图片的路径。

      在母版页_Layout.cshtml的head中增加以下文件的引用:

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        < link   href = " @Url.Content( " ~ / Content / jquery . ui . stars . css " ) "   rel = " stylesheet "   type = " text/css "   / >
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        < script   src = " @Url.Content( " ~ / Scripts / jquery - ui . min . js " ) "   type = " text/javascript " > < / script >
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        < script   src = " @Url.Content( " ~ / Scripts / jquery . ui . stars . min . js " ) "   type = " text/javascript " > < / script >
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      现在要完成首页的整体布局,打开Index.cshtml,讲ViewBag.Title修改为“首页——Ext商店”,然后加入以下代码:

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< div   id = " contentMain " >
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< span   class = " header " > 最新产品 < / span >
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        @ { Html . RenderAction ( " Homepage " , " Product " ) ; }
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< / div >
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< div   id = " contentRight " >
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    < span   class = " header " > 优惠信息 < / span >
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    @ { Html . RenderAction ( " RightList " , " News " ) ; }
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< / div >
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      代码中,最新产品和优惠信息的数据都将从partial视图获取。下面在Site.css中加入以下css:

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#contentMain { float : left ; width : 580px ; display : block ; border-left : 1px   solid   #d3d3d3 ; border-right : 1px   solid   #d3d3d3 ; border-bottom : 1px   solid   #d3d3d3 ; }
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#contentMain   .header { width : 570px ; height : 28px ; background : url(/images/bk.gif)   repeat-x ; line-height : 28px ; display : block ; color : #000 ; font-size : 14px ; margin : 0px ; padding-left : 10px ; }
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#contentMain   ul { float : left ; width : 180px ; display : block ; padding : 0   0   10px   10px ; }
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#contentMain   li { list-style-type : none ; }
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#contentMain   .title { height : 56px ; line-height : 14px ; width : 170px ; display : block ; font-size : 12px ; }
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#contentMain   .rating -title { float : left ; }
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#contentMain   .rating { float : left ; width : 90px ; }
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#contentMain   img { border : 0px ; width : 170px ; height : 190px ; }
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#contentMain   a { text-decoration : none ; color : #000 ; }
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#contentMain   a:hover { text-decoration : underline ; }
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#contentMain   a:visited   { text-decoration : none ; color : #000 ; }
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#contentRight { float : right ; width : 200px ; display : block ; border : 1px   solid   #d3d3d3 ; padding : 1px ; }
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#contentRight   .header { background : url(/images/leftHeader.jpg)   repeat-x ; height : 28px ; line-height : 28px ; width : 190px ; display : block ; color : #fff ; font-size : 14px ; margin : 0px ; }
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#contentRight   span { width : 180px ; display : block ; height : 20px ; line-height : 20px ; background : transparent   url(/images/point02.jpg)   no-repeat   scroll   0   10px ; padding-left : 10px ; margin-left : 5px ; }
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#contentRight   a { color : #000 ; }
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#contentRight   a:hover { text-decoration : underline ; }
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#contentRight   a:visited   { color : #000 ; }
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      现在要完成最新产品的显示。在Controllers文件夹添加一个“ProductController”的控制器,首先加入对“Extshop.Models”的引用,然后添加以下代码:

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                [ ChildActionOnly ]
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                public   ActionResult   Homepage ( )
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                {
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                        var   q   =   dc . T_Products . OrderByDescending ( m   = >   m . CreateTime ) . Take ( 15 ) ;
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                        return   PartialView ( q ) ;
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                }
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      代码只是很简单的从数据库取出15条记录,然后返回Partial视图。在“Homepage”上单击鼠标右键,然后创建一个Partial视图,在视图中添加以下代码:

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@ model   IEnumerable < Extshop . Models . T_Products >
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@ {
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        foreach ( var   c   in   Model )
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        {
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                        < ul >
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                        < li > < a   href = ' @ Url . Action ( " Details " ,   " Product " ,   new   { id = c . ProductID   } ) ' > < img   src = ' / Images / products / @ c . SamllImageUrl '   alt = " @c.Title "   / > < / a > < / li >
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                        < li   class = ' title ' > < a   href = ' @ Url . Action ( " Details " ,   " Product " ,   new   { id = c . ProductID   } ) ' > @ c . Title < / a > < / li >
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                        < li > 市场价: < del > @ c . MarketPrice . ToString ( " C " ) < / del > < / li >
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                        < li > 当前价: @ c . UnitPrice . ToString ( " C " ) < / li >
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                        < li > < span   class = " rating-title " > 评 价: < / span >
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                                < div   class = ' rating '   id = " @c.ProductID.ToString( " rat - 0 " ) " >                                        
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                                        < input   name = " @c.ProductID.ToString( " Star0 " ) "   type = " radio "   class = " star "   disabled = " disabled "   value = " 1 "   @ ( c . TotalRating = = 1   ?   " checked='checked' "   :   " " )     / >
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                                        < input   name = " @c.ProductID.ToString( " Star0 " ) "   type = " radio "   class = " star "   disabled = " disabled "   value = " 2 "   @ ( c . TotalRating = = 2   ?   " checked='checked' "   :   " " )   / >
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                                        < input   name = " @c.ProductID.ToString( " Star0 " ) "   type = " radio "   class = " star "   disabled = " disabled "   value = " 3 "   @ ( c . TotalRating = = 3   ?   " checked='checked' "   :   " " )     / >
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                                        < input   name = " @c.ProductID.ToString( " Star0 " ) "   type = " radio "   class = " star "   disabled = " disabled "   value = " 4 "   @ ( c . TotalRating = = 4   ?   " checked='checked' "   :   " " )     / >
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                                        < input   name = " @c.ProductID.ToString( " Star0 " ) "   type = " radio "   class = " star "   disabled = " disabled "   value = " 5 "   @ ( c . TotalRating = = 5   ?   " checked='checked' "   :   " " )     / >                                        
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                                < / div >
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                        < / li >
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                        < / ul >                
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        }                              
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}
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      代码中12到16行的作用是生成评价图,在这里需要给每一组input不同的“name”属性以区别分组,因为产品编号是唯一的,所以使用它作为名称的一部分是最好的。

      要使评价图显示,还需要在首页中添加以下代码:

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< script   type = " text/javascript " >
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        jQuery ( function   ( )   {
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                $ ( " div   .rating " ) . stars ( ) ;
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        } ) ;
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< / script >

       该段代码的作用是在页面显示加载完毕后,通过div元素的class属性获取所有生成评价图的对象,对它们进行初始化。

      最后需要完成的是右边优惠信息的显示。在Controllers文件夹下添加一个“NewsController”控制器并添加需要的引用,然后添加以下代码:

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                [ ChildActionOnly ]

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                public   ActionResult   RightList ( )

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                {                        

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                        var   q   =   dc . T_News . OrderByDescending ( m   = >   m . CreateTime ) . Take ( 10 ) ;

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                        return   PartialView ( q ) ;

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                }

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      代码也很简单,获取10条最新优惠信息后返回Partial视图。在“RightList”上单击鼠标右键,然后创建一个Partial视图,在视图中添加以下代码:

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@ model   IEnumerable < Extshop . Models . T_News >
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@ {
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        foreach ( var   c   in   Model )
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        {
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                < span > < a   href = ' @ Url . Action ( " Details " ,   " News " ,   new   { id = c . NewsID   } ) ' > @ c . Title < / a > < / span >
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        }
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}
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      代码也是相当的简单,逐条显示优惠信息的标题就行了。

      这样,首页的功能就已经完成了,在浏览器打开,将看到如图1所示的结果。

Asp.net MVC 3实例学习之ExtShop(三)——完成首页_mvc

图1