ASP.NET MVC5网站开发显示文章列表(九)

前端技术 2023/08/31 .NET

老习惯,先上个效果图:

1、在IBLL
在InterfaceCommonModelService接口中添加获取公共模型列表的方法
首先排序方法

/// <summary>
  /// 排序
  /// </summary>
  /// <param name=\"entitys\">数据实体集</param>
  /// <param name=\"roderCode\">排序代码[默认:ID降序]</param>
  /// <returns></returns>
  IQueryable<CommonModel> Order(IQueryable<CommonModel> entitys, int roderCode);
查询数据方法
/// <summary>
  /// 查询分页数据列表
  /// </summary>
  /// <param name=\"totalRecord\">总记录数</param>
  /// <param name=\"model\">模型【All全部】</param>
  /// <param name=\"pageIndex\">页码</param>
  /// <param name=\"pageSize\">每页记录数</param>
  /// <param name=\"title\">标题【不使用设置空字符串】</param>
  /// <param name=\"categoryID\">栏目ID【不使用设0】</param>
  /// <param name=\"inputer\">用户名【不使用设置空字符串】</param>
  /// <param name=\"fromDate\">起始日期【可为null】</param>
  /// <param name=\"toDate\">截止日期【可为null】</param>
  /// <param name=\"orderCode\">排序码</param>
  /// <returns>分页数据列表</returns>
  IQueryable<CommonModel> FindPageList(out int totalRecord, int pageIndex, int pageSize, string model, string title, int categoryID, string inputer, Nullable<DateTime> fromDate, Nullable<DateTime> toDate, int orderCode);

2、BLL

在CommonModelService写方法实现代码,内容都很简单主要是思路,直接上代码
public IQueryable<CommonModel> FindPageList(out int totalRecord, int pageIndex, int pageSize, string model, string title, int categoryID, string inputer, Nullable<DateTime> fromDate, Nullable<DateTime> toDate, int orderCode)
  {
   //获取实体列表
   IQueryable<CommonModel> _commonModels = CurrentRepository.Entities;
   if (model == null || model != \"All\") _commonModels = _commonModels.Where(cm => cm.Model == model);
   if (!string.IsNullOrEmpty(title)) _commonModels = _commonModels.Where(cm => cm.Title.Contains(title));
   if (categoryID > 0) _commonModels = _commonModels.Where(cm => cm.CategoryID == categoryID);
   if (!string.IsNullOrEmpty(inputer)) _commonModels = _commonModels.Where(cm => cm.Inputer == inputer);
   if (fromDate != null) _commonModels = _commonModels.Where(cm => cm.ReleaseDate >= fromDate);
   if (toDate != null) _commonModels = _commonModels.Where(cm => cm.ReleaseDate <= toDate);
   _commonModels = Order(_commonModels, orderCode);
   totalRecord = _commonModels.Count();
   return PageList(_commonModels, pageIndex, pageSize).AsQueryable();
  }

  public IQueryable<CommonModel> Order(IQueryable<CommonModel> entitys, int orderCode)
  {
   switch(orderCode)
   {
    //默认排序
    default:
     entitys = entitys.OrderByDescending(cm => cm.ReleaseDate);
     break;
   }
   return entitys;
  }

3、web
由于CommonModel跟我们前台显示的数据并不一致,为了照顾datagrid中的数据显示再在Ninesky.Web.Models中再构造一个视图模型CommonModelViewModel

using System;

namespace Ninesky.Web.Models
{
 /// <summary>
 /// CommonModel视图模型
 /// <remarks>
 /// 创建:2014.03.10
 /// </remarks>
 /// </summary>
 public class CommonModelViewModel
 {
  public int ModelID { get; set; }

  /// <summary>
  /// 栏目ID
  /// </summary>
  public int CategoryID { get; set; }

  /// <summary>
  /// 栏目名称
  /// </summary>
  public string CategoryName { get; set; }

  /// <summary>
  /// 模型名称
  /// </summary>
  public string Model { get; set; }

  /// <summary>
  /// 标题
  /// </summary>
  public string Title { get; set; }

  /// <summary>
  /// 录入者
  /// </summary>
  public string Inputer { get; set; }

  /// <summary>
  /// 点击
  /// </summary>
  public int Hits { get; set; }

  /// <summary>
  /// 发布日期
  /// </summary>
  public DateTime ReleaseDate { get; set; }

  /// <summary>
  /// 状态
  /// </summary>
  public int Status { get; set; }

  /// <summary>
  /// 状态文字
  /// </summary>
  public string StatusString { get { return Ninesky.Models.CommonModel.StatusList[Status]; } }

  /// <summary>
  /// 首页图片
  /// </summary>
  public string DefaultPicUrl { get; set; }
 }
}

在ArticleController中添加一个返回json类型的JsonList方法

/// <summary>
  /// 文章列表Json【注意权限问题,普通人员是否可以访问?】
  /// </summary>
  /// <param name=\"title\">标题</param>
  /// <param name=\"input\">录入</param>
  /// <param name=\"category\">栏目</param>
  /// <param name=\"fromDate\">日期起</param>
  /// <param name=\"toDate\">日期止</param>
  /// <param name=\"pageIndex\">页码</param>
  /// <param name=\"pageSize\">每页记录</param>
  /// <returns></returns>
  public ActionResult JsonList(string title, string input, Nullable<int> category, Nullable<DateTime> fromDate, Nullable<DateTime> toDate, int pageIndex = 1, int pageSize = 20)
  {
   if (category == null) category = 0;
   int _total;
   var _rows = commonModelService.FindPageList(out _total, pageIndex, pageSize, \"Article\", title, (int)category, input, fromDate, toDate, 0).Select(
    cm => new Ninesky.Web.Models.CommonModelViewModel() 
    { 
     CategoryID = cm.CategoryID,
     CategoryName = cm.Category.Name,
     DefaultPicUrl = cm.DefaultPicUrl,
     Hits = cm.Hits,
     Inputer = cm.Inputer,
     Model = cm.Model,
     ModelID = cm.ModelID,
     ReleaseDate = cm.ReleaseDate,
     Status = cm.Status,
     Title = cm.Title 
    });
   return Json(new { total = _total, rows = _rows.ToList() });
  }

下面是做界面了,在添加 List方法,这里不提供任何数据,数据在JsonList 中获得

/// <summary>
  /// 全部文章
  /// </summary>
  /// <returns></returns>
  public ActionResult List()
  {
   return View();
  }

右键添加视图

<div id=\"toolbar\">
 <div>
  <a href=\"#\" class=\"easyui-linkbutton\" data-options=\"iconCls:\'icon-edit\',plain:true\" >修改</a>
  <a href=\"#\" class=\"easyui-linkbutton\" data-options=\"iconCls:\'icon-remove\',plain:true\" \">删除</a>
  <a href=\"#\" class=\"easyui-linkbutton\" data-options=\"iconCls:\'icon-reload\',plain:true\" onclick=\"$(\'#article_list\').datagrid(\'reload\');\">刷新</a>
 </div>
 <div class=\"form-inline\">
  <label>栏目</label><input id=\"combo_category\" data-options=\"url:\'@Url.Action(\"JsonTree\", \"Category\", new { model=\"Article\" })\'\" class=\"easyui-combotree\" />
  <label>标题</label> <input id=\"textbox_title\" class=\"input-easyui\" style=\"width:280px\" />
  <label>录入人</label><input id=\"textbox_inputer\" class=\"input-easyui\" />
  <label>添加日期</label>
  <input id=\"datebox_fromdate\" type=\"datetime\" class=\"easyui-datebox\" style=\"width:120px\" /> -
  <input id=\"datebox_todate\" type=\"datetime\" class=\"easyui-datebox\" style=\"width:120px; \" />
  <a href=\"#\" id=\"btn_search\" data-options=\"iconCls:\'icon-search\'\" class=\"easyui-linkbutton\">查询</a>
 </div>

</div>
<table id=\"article_list\"></table>
<script src=\"~/Scripts/Common.js\"></script>
<script type=\"text/javascript\">
 $(\"#article_list\").datagrid({
  loadMsg: \'加载中……\',
  pagination:true,
  url: \'@Url.Action(\"JsonList\",\"Article\")\',
  columns: [[
   { field: \'ModelID\', title: \'ID\', checkbox: true },
   { field: \'CategoryName\', title: \'栏目\'},
   { field: \'Title\', title: \'标题\'},
   { field: \'Inputer\', title: \'录入\', align: \'right\' },
   { field: \'Hits\', title: \'点击\', align: \'right\' },
   { field: \'ReleaseDate\', title: \'发布日期\', align: \'right\', formatter: function (value, row, index) { return jsonDateFormat(value); } },
   { field: \'StatusString\', title: \'状态\', width: 100, align: \'right\' }
  ]],
  toolbar: \'#toolbar\',
  idField: \'ModelID\',
 });
 //查找
 $(\"#btn_search\").click(function () {
  $(\"#article_list\").datagrid(\'load\', {
   title: $(\"#textbox_title\").val(),
   input: $(\"#textbox_inputer\").val(),
   category: $(\"#combo_category\").combotree(\'getValue\'),
   fromDate: $(\"#datebox_fromdate\").datebox(\'getValue\'),
   toDate: $(\"#datebox_todate\").datebox(\'getValue\')
  });
 });

 }
</script>

上面都是easyui-datagrid的内容。
总体思路是BLL中实现查询公共模型列表,web中添加一个JsonList方法调用BLL中的方法并返回列表的Json类型。然后再添加一个List调用JsonList用来显示。下篇文章做删除和修改操作,希望大家会持续关注。

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