ASP.NET MVC5 网站开发实践(二) Member区域

上次做了显示文章列表，再实现修改和删除文章这部分内容就结束了，这次内容比较简单，由于做过了添加文章，修改文章非常类似，就是多了一个TryUpdateModel部分更新模型数据。

一、删除文章

由于公共模型跟，文章，附件有关联，所以这里的删除次序很重要，如果先删除模型，那么文章ModelID和附件的ModelID多会变成null，所以要先先删除文章和附件再删除公共模型。

由于公共模型和附件是一对多的关系，我们把删除公共模型和删除附件写在一起。

在BLL的BaseRepository类中有默认的Delete方法，但这个方法中仅删除模型，不会删除外键，所以在CommonModelRepository在new一个出来封印掉默认的方法。

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;}

这个的意思是封印掉继承的Delete方法，在新的方法中如果存在附加那么先删除附件，再删除公共模型。那么如果我们还想调用基类的Delete方法怎么办？可以用base.Delete。

好了，现在可以开始删除了。

在ArticleController中添加Delete方法

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

二、修改文章

这个部分跟添加文章非常类似

首先在ArticleController中添加显示编辑视图的Edit

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

右键添加视图，这个跟添加类似，没什么好说的直接上代码

@section scripts{<script type="text/javascript" src="~/Scripts/KindEditor/kindeditor-min.js"></script><script type="text/javascript">//编辑框
        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});//首页图片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("生成缩略图失败！");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">栏目</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">选择…</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>
}

开始做后台接受代码，在ArticleController中添加如下代码。

[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)){//附件处理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);}

详细讲解一下吧：

1、[ValidateInput(false)] 表示不验证输入内容。因为文章内容包含html代码，防止提交失败。

2、[ValidateAntiForgeryToken]是为了防止伪造跨站请求的，也就说只有本真的请求才能通过。

见图中的红线部分，在试图中构造验证字符串，然后再后台验证。

3、public ActionResult Edit()。看这个方法没有接收任何数据，我们再方法中使用TryUpdateModel更新模型。因为不能完全相信用户，比如如果用户构造一个CateggoryID过来，就会把文章发布到其他栏目去。

这个是在路由中获取id参数

再看这两行，略有不同

第一行直接更新article模型。第一个参数是要更新的模型，第二个参数是更新的字段。

第二行略有不同，增加了一个前缀参数，我们看视图生成的代码 @Html.TextBoxFor(model => model.CommonModel.Title 是带有前缀CommonModel的。所以这里必须使用前缀来更新视图。

三、修改文章列表

写完文章后，就要更改文章列表代码用来删除和修改文章。

打开List视图，修改部分由2处。

1、js脚本部分

<script type="text/javascript">$("#article_list").datagrid({loadMsg: '加载中……',pagination:true,url: '@Url.Action("JsonList","Article")',columns: [[{ field: 'ModelID', title: 'ID', checkbox: true },{ field: 'CategoryName', title: '栏目'},{ field: 'Title', title: '标题'},{ field: 'Inputer', title: '录入', align: 'right' },{ field: 'Hits', title: '点击', align: 'right' },{ field: 'ReleaseDate', title: '发布日期', align: 'right', formatter: function (value, row, index) { return jsonDateFormat(value); } },{ field: 'StatusString', title: '状态', width: 100, align: 'right' }]],toolbar: '#toolbar',idField: 'ModelID',onDblClickRow: function (rowIndex, rowData) { window.parent.addTab("修改文章", "@Url.Action("Edit","Article")/" + rowData.ModelID, "icon-page"); }});//查找$("#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", "请选择要修改的行!");return;}else if (rows.length != 1) {$.messager.alert("提示", "仅能选择一行!");return;}else {window.parent.addTab("修改文章", "@Url.Action("Edit","Article")/" + rows[0].ModelID, "icon-page");}}//删除function del(){var rows = $("#article_list").datagrid("getSelections");if (!rows || rows.length < 1) {$.messager.alert("提示", "未选择任何行!");return;}else if (rows.length > 0) {$.messager.confirm("确认", "您确定要删除所选行吗？", function (r) {if (r) {$.messager.progress();$.each(rows, function (index, value) {$.ajax({type: "post",url: "@Url.Action("Delete", "Article")",data: { id: value.ModelID },async: false,success: function (data) {}});});$.messager.progress('close');//清除选择行rows.length = 0;$("#article_list").datagrid('reload');}});return;}}
</script>

增加了修改方法、删除方法，在datagrid里添加行双击进入修改视图的方法

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

我的文章列表与全部文章类似，并简化掉了部分内容那个，更加简单，直接上代码了

Article控制器中添加

/// <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() });}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);}

为MyList右键添加视图

<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()">删除</a><a href="#" class="easyui-linkbutton" data-options="iconCls:'icon-reload',plain:true" onclick="$('#article_list').datagrid('reload');">刷新</a></div><div class="form-inline"><label>标题</label> <input id="textbox_title" class="input-easyui" style="width:280px" /><label>添加日期</label><input id="datebox_fromdate" type="datetime" class="easyui-datebox" style="width:120px" /> -<input id="datebox_todate" type="datetime" class="easyui-datebox" style="width:120px; " /><a href="#" id="btn_search" data-options="iconCls:'icon-search'" class="easyui-linkbutton">查询</a></div></div>
<table id="article_list"></table>
<script src="~/Scripts/Common.js"></script>
<script type="text/javascript">$("#article_list").datagrid({loadMsg: '加载中……',pagination:true,url: '@Url.Action("MyJsonList", "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',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", "请选择要修改的行!");return;}else if (rows.length != 1) {$.messager.alert("提示", "仅能选择一行!");return;}else {window.parent.addTab("修改文章", "@Url.Action("Edit","Article")/" + rows[0].ModelID, "icon-page");}}//删除function del(){var rows = $("#article_list").datagrid("getSelections");if (!rows || rows.length < 1) {$.messager.alert("提示", "未选择任何行!");return;}else if (rows.length > 0) {$.messager.confirm("确认", "您确定要删除所选行吗？", function (r) {if (r) {$.messager.progress();$.each(rows, function (index, value) {$.ajax({type: "post",url: "@Url.Action("Delete", "Article")",data: { id: value.ModelID },async: false,success: function (data) {}});});$.messager.progress('close');//清除选择行
                    rows.length = 0;$("#article_list").datagrid('reload');}});return;}}
</script>