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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;
}
</div>
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);
}
</div>
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));
}
</div>
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>
}
</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(