ASP.NET MVC5网站开发显示文章列表（九）

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 rel="nofollow noopener noreferrer" href="#" class="easyui-linkbutton" data-options="iconCls:'icon-edit',plain:true" >修改</a>
  <a rel="nofollow noopener noreferrer" href="#" class="easyui-linkbutton" data-options="iconCls:'icon-remove',plain:true" ">删除</a>
  <a rel="nofollow noopener noreferrer" 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 rel="nofollow noopener noreferrer" 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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