public new bool Delete(Models.CommonModel commonModel, bool isSave = true)
  {
   if (commonModel.Attachment != null) nContext.Attachments.RemoveRange(commonModel.Attachment);
   nContext.CommonModels.Remove(commonModel);
   return isSave ? nContext.SaveChanges() > 0 : true;
  }

這個(gè)的意思是封印掉繼承的Delete方法，在新的方法中如果存在附加那么先刪除附件，再刪除公共模型。那么如果我們還想調(diào)用基類(lèi)的Delete方法怎么辦？可以用base.Delete。

好了，現(xiàn)在可以開(kāi)始刪除了。

在ArticleController中添加Delete方法

/// <summary>
  /// 刪除
  /// </summary>
  /// <param name="id">文章id</param>
  /// <returns></returns>
  public JsonResult Delete(int id)
  {
   //刪除附件
   var _article = articleService.Find(id);
   if(_article == null) return Json(false);
   //附件列表
   var _attachmentList = _article.CommonModel.Attachment;
   var _commonModel = _article.CommonModel;
   //刪除文章
   if (articleService.Delete(_article))
   {
    //刪除附件文件
    foreach (var _attachment in _attachmentList)
    {
     System.IO.File.Delete(Server.MapPath(_attachment.FileParth));
    }
    //刪除公共模型
    commonModelService.Delete(_commonModel);
    return Json(true);
   }
   else return Json(false);
  }

二、修改文章

這個(gè)部分跟添加文章非常類(lèi)似
首先在ArticleController中添加顯示編輯視圖的Edit

/// <summary>
  /// 修改
  /// </summary>
  /// <param name="id"></param>
  /// <returns></returns>
  public ActionResult Edit(int id)
  {
   return View(articleService.Find(id));
  }

右鍵添加視圖，這個(gè)跟添加類(lèi)似，沒(méi)什么好說(shuō)的直接上代碼

@section scripts{
 <script type="text/javascript" src="~/Scripts/KindEditor/kindeditor-min.js"></script>
 <script type="text/javascript">
  //編輯框
  KindEditor.ready(function (K) {
   window.editor = K.create('#Content', {
    height: '500px',
    uploadJson: '@Url.Action("Upload", "Attachment")',
    fileManagerJson: '@Url.Action("FileManagerJson", "Attachment", new { id = @Model.CommonModel.ModelID })',
    allowFileManager: true,
    formatUploadUrl: false
   });
  //首頁(yè)圖片
   var editor2 = K.editor({
    fileManagerJson: '@Url.Action("FileManagerJson", "Attachment", new {id=@Model.CommonModel.ModelID })'
   });
   K('#btn_picselect').click(function () {
    editor2.loadPlugin('filemanager', function () {
     editor2.plugin.filemanagerDialog({
      viewType: 'VIEW',
      dirName: 'image',
      clickFn: function (url, title) {
       var url;
       $.ajax({
        type: "post",
        url: "@Url.Action("CreateThumbnail", "Attachment")",
        data: { originalPicture: url },
        async: false,
        success: function (data) {
         if (data == null) alert("生成縮略圖失?。?);
         else {
          K('#CommonModel_DefaultPicUrl').val(data);
          K('#imgpreview').attr("src", data);
         }
         editor2.hideDialog();
        }
       });
      }
     });
    });
   });
  });
 </script>
}

@model Ninesky.Models.Article
@using (Html.BeginForm())
{ @Html.AntiForgeryToken()
 <div class="form-horizontal" role="form">
  <h4>添加文章</h4>
  <hr />
  @Html.ValidationSummary(true)
  <div class="form-group">
   <label class="control-label col-sm-2" for="CommonModel_CategoryID">欄目</label>
   <div class="col-sm-10">
    <input id="CommonModel_CategoryID" name="CommonModel.CategoryID" data-options="url:'@Url.Action("JsonTree", "Category", new { model="Article" })'" class="easyui-combotree" style="height: 34px; width: 280px;" value="@Model.CommonModel.CategoryID" />
      @Html.ValidationMessageFor(model => model.CommonModel.CategoryID)</div>
  </div>
  <div class="form-group">
   @Html.LabelFor(model => model.CommonModel.Title, new { @class = "control-label col-sm-2" })
   <div class="col-sm-10">
      @Html.TextBoxFor(model => model.CommonModel.Title, new { @class = "form-control" })
      @Html.ValidationMessageFor(model => model.CommonModel.Title)</div>
  </div>


  <div class="form-group">
   @Html.LabelFor(model => model.Author, new { @class = "control-label col-sm-2" })
   <div class="col-sm-10">
    @Html.TextBoxFor(model => model.Author, new { @class = "form-control" })
    @Html.ValidationMessageFor(model => model.Author)
   </div>
  </div>

  <div class="form-group">
   @Html.LabelFor(model => model.Source, new { @class = "control-label col-sm-2" })
   <div class="col-sm-10">
    @Html.TextBoxFor(model => model.Source, new { @class = "form-control" })
    @Html.ValidationMessageFor(model => model.Source)
   </div>
  </div>

  <div class="form-group">
   @Html.LabelFor(model => model.Intro, new { @class = "control-label col-sm-2" })
   <div class="col-sm-10">
    @Html.TextAreaFor(model => model.Intro, new { @class = "form-control" })
    @Html.ValidationMessageFor(model => model.Intro)
   </div>
  </div>

  <div class="form-group">
   @Html.LabelFor(model => model.Content, new { @class = "control-label col-sm-2" })
   <div class="col-sm-10">
    @Html.EditorFor(model => model.Content)
    @Html.ValidationMessageFor(model => model.Content)
   </div>
  </div>

  <div class="form-group">
   @Html.LabelFor(model => model.CommonModel.DefaultPicUrl, new { @class = "control-label col-sm-2" })
   <div class="col-sm-10">
    <img id="imgpreview" class="thumbnail" src="@Model.CommonModel.DefaultPicUrl" />
    @Html.HiddenFor(model => model.CommonModel.DefaultPicUrl)
    <a id="btn_picselect" class="easyui-linkbutton">選擇…</a>
    @Html.ValidationMessageFor(model => model.CommonModel.DefaultPicUrl)
   </div>
  </div>

  <div class="form-group">
   <div class="col-sm-offset-2 col-sm-10">
    <input type="submit" value="保存" class="btn btn-default" />
   </div>
  </div>
 </div>
}

開(kāi)始做后臺(tái)接受代碼，在ArticleController中添加如下代碼。

[HttpPost]
  [ValidateInput(false)]
  [ValidateAntiForgeryToken]
  public ActionResult Edit()
  {
   int _id = int.Parse(ControllerContext.RouteData.GetRequiredString("id"));
   var article = articleService.Find(_id);
   TryUpdateModel(article, new string[] { "Author", "Source", "Intro", "Content" });
   TryUpdateModel(article.CommonModel, "CommonModel", new string[] { "CategoryID", "Title", "DefaultPicUrl" });
   if(ModelState.IsValid)
   {
    if (articleService.Update(article))
    {
     //附件處理
     InterfaceAttachmentService _attachmentService = new AttachmentService();
     var _attachments = _attachmentService.FindList(article.CommonModel.ModelID, User.Identity.Name, string.Empty,true).ToList();
     foreach (var _att in _attachments)
     {
      var _filePath = Url.Content(_att.FileParth);
      if ((article.CommonModel.DefaultPicUrl != null && article.CommonModel.DefaultPicUrl.IndexOf(_filePath) >= 0) || article.Content.IndexOf(_filePath) > 0)
      {
       _att.ModelID = article.ModelID;
       _attachmentService.Update(_att);
      }
      else
      {
       System.IO.File.Delete(Server.MapPath(_att.FileParth));
       _attachmentService.Delete(_att);
      }
     }
     return View("EditSucess", article);
    }
   }
   return View(article);
  }

詳細(xì)講解一下吧：

1、[ValidateInput(false)] 表示不驗(yàn)證輸入內(nèi)容。因?yàn)槲恼聝?nèi)容包含html代碼，防止提交失敗。

2、[ValidateAntiForgeryToken]是為了防止偽造跨站請(qǐng)求的，也就說(shuō)只有本真的請(qǐng)求才能通過(guò)。

見(jiàn)圖中的紅線部分，在試圖中構(gòu)造驗(yàn)證字符串，然后再后臺(tái)驗(yàn)證。

3、public ActionResult Edit()?？催@個(gè)方法沒(méi)有接收任何數(shù)據(jù)，我們?cè)俜椒ㄖ惺褂肨ryUpdateModel更新模型。因?yàn)椴荒芡耆嘈庞脩?hù)，比如如果用戶(hù)構(gòu)造一個(gè)CateggoryID過(guò)來(lái)，就會(huì)把文章發(fā)布到其他欄目去。

這個(gè)是在路由中獲取id參數(shù)

再看這兩行，略有不同
第一行直接更新article模型。第一個(gè)參數(shù)是要更新的模型，第二個(gè)參數(shù)是更新的字段。
第二行略有不同，增加了一個(gè)前綴參數(shù)，我們看視圖生成的代碼 @Html.TextBoxFor(model => model.CommonModel.Title 是帶有前綴CommonModel的。所以這里必須使用前綴來(lái)更新視圖。

三、修改文章列表

寫(xiě)完文章后，就要更改文章列表代碼用來(lái)刪除和修改文章。
打開(kāi)List視圖，修改部分由2處。

1、js腳本部分

<script type="text/javascript">
 $("#article_list").datagrid({
  loadMsg: '加載中……',
  pagination:true,
  url: '@Url.Action("JsonList","Article")',
  columns: [[
   { field: 'ModelID', title: 'ID', checkbox: true },
   { field: 'CategoryName', title: '欄目'},
   { field: 'Title', title: '標(biāo)題'},
   { field: 'Inputer', title: '錄入', align: 'right' },
   { field: 'Hits', title: '點(diǎn)擊', align: 'right' },
   { field: 'ReleaseDate', title: '發(fā)布日期', align: 'right', formatter: function (value, row, index) { return jsonDateFormat(value); } },
   { field: 'StatusString', title: '狀態(tài)', width: 100, align: 'right' }
  ]],
  toolbar: '#toolbar',
  idField: 'ModelID',
  onDblClickRow: function (rowIndex, rowData) { window.parent.addTab("修改文章", "@Url.Action("Edit","Article")/" + rowData.ModelID, "icon-page"); }
 });
 //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')
  });
 });

 //修改事件
 function eidt() {
  var rows = $("#article_list").datagrid("getSelections");
  if (!rows || rows.length < 1) {
   $.messager.alert("提示", "請(qǐng)選擇要修改的行!");
   return;
  }
  else if (rows.length != 1) {
   $.messager.alert("提示", "僅能選擇一行!");
   return;
  }
  else {
   window.parent.addTab("修改文章", "@Url.Action("Edit","Article")/" + rows[0].ModelID, "icon-page");
  }
 }
 //刪除
 function del()
 {
  var rows = $("#article_list").datagrid("getSelections");
  if (!rows || rows.length < 1) {
   $.messager.alert("提示", "未選擇任何行!");
   return;
  }
  else if (rows.length > 0) {
   $.messager.confirm("確認(rèn)", "您確定要?jiǎng)h除所選行嗎？", function (r) {
    if (r) {
     $.messager.progress();
     $.each(rows, function (index, value) {
      $.ajax({
       type: "post",
       url: "@Url.Action("Delete", "Article")",
       data: { id: value.ModelID },
       async: false,
       success: function (data) {
       }
      });
     });
     $.messager.progress('close');
     //清除選擇行
     rows.length = 0;
     $("#article_list").datagrid('reload');
    }
   });
   return;
  }
 }
</script>

增加了修改方法、刪除方法，在datagrid里添加行雙擊進(jìn)入修改視圖的方法

onDblClickRow: function (rowIndex, rowData) { window.parent.addTab("修改文章", "@Url.Action("Edit","Article")/" + rowData.ModelID, "icon-page"); }

2、

四、我的文章列表

我的文章列表與全部文章類(lèi)似，并簡(jiǎn)化掉了部分內(nèi)容那個(gè)，更加簡(jiǎn)單，直接上代碼了
Article控制器中添加

/// <summary>
  /// 文章列表Json【注意權(quán)限問(wèn)題，普通人員是否可以訪問(wèn)？】
  /// </summary>
  /// <param name="title">標(biāo)題</param>
  /// <param name="input">錄入</param>
  /// <param name="category">欄目</param>
  /// <param name="fromDate">日期起</param>
  /// <param name="toDate">日期止</param>
  /// <param name="pageIndex">頁(yè)碼</param>
  /// <param name="pageSize">每頁(yè)記錄</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() });
  }

  public ActionResult MyList()
  {
   return View();
  }

  /// <summary>
  /// 我的文章列表
  /// </summary>
  /// <param name="title"></param>
  /// <param name="fromDate"></param>
  /// <param name="toDate"></param>
  /// <param name="pageIndex"></param>
  /// <param name="pageSize"></param>
  /// <returns></returns>
  public ActionResult MyJsonList(string title, Nullable<DateTime> fromDate, Nullable<DateTime> toDate, int pageIndex = 1, int pageSize = 20)
  {
   int _total;
   var _rows = commonModelService.FindPageList(out _total, pageIndex, pageSize, "Article", title, 0, string.Empty, 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() }, JsonRequestBehavior.AllowGet);
  }
為MyList右鍵添加視圖
<div id="toolbar">
 <div>
  <a href="#" class="easyui-linkbutton" data-options="iconCls:'icon-edit',plain:true" onclick="eidt()">修改</a>
  <a href="#" class="easyui-linkbutton" data-options="iconCls:'icon-remove',plain:true" onclick="del()">刪除</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>標(biāo)題</label> <input id="textbox_title" class="input-easyui" style="width:280px" />
  <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">查詢(xún)</a>
 </div>

</div>
<table id="article_list"></table>
<script src="~/Scripts/Common.js"></script>
<script type="text/javascript">
 $("#article_list").datagrid({
  loadMsg: '加載中……',
  pagination:true,
  url: '@Url.Action("MyJsonList", "Article")',
  columns: [[
   { field: 'ModelID', title: 'ID', checkbox: true },
   { field: 'CategoryName', title: '欄目'},
   { field: 'Title', title: '標(biāo)題'},
   { field: 'Inputer', title: '錄入', align: 'right' },
   { field: 'Hits', title: '點(diǎn)擊', align: 'right' },
   { field: 'ReleaseDate', title: '發(fā)布日期', align: 'right', formatter: function (value, row, index) { return jsonDateFormat(value); } },
   { field: 'StatusString', title: '狀態(tài)', width: 100, align: 'right' }
  ]],
  toolbar: '#toolbar',
  idField: 'ModelID',
  onDblClickRow: function (rowIndex, rowData) { window.parent.addTab("修改文章", "@Url.Action("Edit","Article")/" + rowData.ModelID, "icon-page"); }
 });
 //查找
 $("#btn_search").click(function () {
  $("#article_list").datagrid('load', {
   title: $("#textbox_title").val(),
   fromDate: $("#datebox_fromdate").datebox('getValue'),
   toDate: $("#datebox_todate").datebox('getValue')
  });
 });

 //修改事件
 function eidt() {
  var rows = $("#article_list").datagrid("getSelections");
  if (!rows || rows.length < 1) {
   $.messager.alert("提示", "請(qǐng)選擇要修改的行!");
   return;
  }
  else if (rows.length != 1) {
   $.messager.alert("提示", "僅能選擇一行!");
   return;
  }
  else {
   window.parent.addTab("修改文章", "@Url.Action("Edit","Article")/" + rows[0].ModelID, "icon-page");
  }
 }
 //刪除
 function del()
 {
  var rows = $("#article_list").datagrid("getSelections");
  if (!rows || rows.length < 1) {
   $.messager.alert("提示", "未選擇任何行!");
   return;
  }
  else if (rows.length > 0) {
   $.messager.confirm("確認(rèn)", "您確定要?jiǎng)h除所選行嗎？", function (r) {
    if (r) {
     $.messager.progress();
     $.each(rows, function (index, value) {
      $.ajax({
       type: "post",
       url: "@Url.Action("Delete", "Article")",
       data: { id: value.ModelID },
       async: false,
       success: function (data) {
       }
      });
     });
     $.messager.progress('close');
     //清除選擇行
     rows.length = 0;
     $("#article_list").datagrid('reload');
    }
   });
   return;
  }
 }
</script>

要注意的是刪除文章時(shí)刪除的次序，修改文章時(shí)TryUpdateModel的使用，希望本文對(duì)大家的學(xué)習(xí)有所幫助。

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