MVC4做网站后台:栏目管理2、修改栏目
接上节添加栏目。
修改栏目与添加栏目非常相似，主要区别在于先向视图传递要修改栏目的model。另外在保存时比添加栏目验证要更多一些。
1、要验证父栏目不能是其本身；
2、父栏目不能是其子栏目；
3、父栏目不能是单页栏目
4、父栏目不能是外部链接
……
另外还有一个ParentParth字段，如果父栏目修改了，其本身和所有子栏目的该字段都要修改。
那么先在控制器中添加一个局部视图action
/// <summary> /// 修改栏目 /// </summary> /// <param name="id">栏目Id</param> /// <returns>局部视图</returns> public PartialViewResult Modify(int id) { return PartialView(categoryRepository.Find(id)); }
再添加其视图，内容基本同，添加栏目
@model Ninesky.Models.Category <div class="c_navbar">栏目管理 >> 修改栏目</div> @using (Html.BeginForm()) { @Html.AntiForgeryToken() <div class="fs_wapper"> <div class="header">修改栏目</div>@Html.HiddenFor(model => model.CategoryId) @Html.ValidationSummary() <table class="fieldset"> <tr> <th>@Html.LabelFor(model => model.Name)<span>*</span></th> <td>@Html.EditorFor(model => model.Name) @Html.ValidationMessageFor(model => model.Name) @Html.DisplayDescriptionFor(model => model.Name)</td> </tr> <tr> <th>@Html.LabelFor(model => model.ParentId)<span>*</span></th> <td> <input id="ParentId" name="ParentId" style="width: 200px;" data-url="@Url.Action("Tree", "Category")" value="@Model.ParentId" /> @Html.ValidationMessageFor(model => model.ParentId) </td> </tr> <tr> <th>@Html.LabelFor(model => model.Type)<span>*</span></th> <td> <input id="Type" name="Type" value="@Model.Type" /> @Html.ValidationMessageFor(model => model.Type) </td> </tr> <tr> <th>@Html.LabelFor(model => model.Model)<span>*</span></th> <td> <input id="Model" name="Model" value="@Model.Model" data-url="@Url.Action("Items", "Module", new { id = 1 })" /> @Html.ValidationMessageFor(model => model.Model) @Html.DisplayDescriptionFor(model => model.Model) </td> </tr> <tr> <th>@Html.LabelFor(model => model.CategoryView)<span>*</span></th> <td> <input id="CategoryView" class="easyui-combobox" name="CategoryView" data-options="valueField:'Name',textField:'Name',url:'@Url.Action("Views", "View", new { controllerName="Category" })'" value="@Model.CategoryView"> @Html.ValidationMessageFor(model => model.CategoryView) </td> </tr> <tr> <th>@Html.LabelFor(model => model.ContentView)<span>*</span></th> <td> <input id="ContentView" class="easyui-combobox" name="ContentView" data-url="@Url.Action("Views", "View")" data-options="valueField:'Name',textField:'Name',url:'@Url.Action("Views", "View", new { controllerName="Article" })'" value="@Model.ContentView"> @Html.ValidationMessageFor(model => model.ContentView) </td> </tr> <tr> <th>@Html.LabelFor(model => model.LinkUrl)<span>*</span></th> <td> @Html.EditorFor(model => model.LinkUrl) @Html.ValidationMessageFor(model => model.LinkUrl) @Html.DisplayDescriptionFor(model => model.LinkUrl) </td> </tr> <tr> <th>@Html.LabelFor(model => model.Order)<span>*</span></th> <td> @Html.EditorFor(model => model.Order) @Html.ValidationMessageFor(model => model.Order) @Html.DisplayDescriptionFor(model => model.Order) </td> </tr> <tr> <th>@Html.LabelFor(model => model.ContentOrder)<span>*</span></th> <td> <input id="ContentOrder" name="ContentOrder" class="easyui-combobox" style="width: 200px;" data-options="url:'@Url.Action("OrderList", "Item", new {area="" })',valueField:'Value',textField:'Name'" value="@Model.ContentOrder" /> @Html.ValidationMessageFor(model => model.ContentOrder) @Html.DisplayDescriptionFor(model => model.ContentOrder) </td> </tr> <tr> <th>@Html.LabelFor(model => model.PageSize)<span>*</span></th> <td> @Html.EditorFor(model => model.PageSize) @Html.ValidationMessageFor(model => model.PageSize) @Html.DisplayDescriptionFor(model => model.PageSize) </td> </tr> <tr> <th>@Html.LabelFor(model => model.RecordUnit)<span>*</span></th> <td> @Html.EditorFor(model => model.RecordUnit) @Html.ValidationMessageFor(model => model.RecordUnit) @Html.DisplayDescriptionFor(model => model.RecordUnit) </td> </tr> <tr> <th>@Html.LabelFor(model => model.RecordName)<span>*</span></th> <td> @Html.EditorFor(model => model.RecordName) @Html.ValidationMessageFor(model => model.RecordName) @Html.DisplayDescriptionFor(model => model.RecordName) </td> </tr> <tr> <th></th> <td> <a id="CategoryModify_Save" href="javascript:void()" class="easyui-linkbutton">修改</a> </td> </tr> </table> </div> @Scripts.Render("~/Areas/Admin/Scripts/Category.js"); <script type="text/javascript"> CategoryModify_Ready(); </script> @Scripts.Render("~/bundles/jqueryval")
js代码与add类似，粘贴了，看代码吧。
效果
重点是，后台处理代码。
首先考虑在父栏目修改时要更改其子栏目的所有ParentParth字段。
首先打开Ninesky.Areas.Admin.Repository.InterfaceCategory接口。
添加函数
/// <summary> /// 修改子栏目父路径 /// </summary> /// <param name="originalParth">原路径</param> /// <param name="newParh">新路径</param> /// <returns>布尔值。true表示添加成功，false表示失败。</returns> bool ChangeChildrenParentParth(string originalParth, string newParh);
Ninesky.Areas.Admin.Repository.CategoryRepository写其实现代码。
public bool ChangeChildrenParentParth(string originalParth, string newParh) { using (NineskyContext _nineskyContext = new NineskyContext()) { var _children = _nineskyContext.Categorys.Where(c => c.ParentPath.IndexOf(originalParth) == 0); foreach(var _child in _children) { _child.ParentPath = _child.ParentPath.Replace(originalParth, newParh); } return _nineskyContext.SaveChanges() > 0; } }
下面就是做控制器的修改处理action了。都写了注释就不解释了。
[HttpPost] public JsonResult Modify(Category category) { JsonViewModel _jdata = new JsonViewModel(); if (ModelState.IsValid)//模型验证通过 { var _category = categoryRepository.Find(category.CategoryId); //父栏目 if (category.ParentId == 0) category.ParentPath = "0"; else { var _parentCategory = categoryRepository.Find(category.ParentId); if (_parentCategory == null) ModelState.AddModelError("ParentId", "父栏目不存在。"); else if (_parentCategory.Type != 0) ModelState.AddModelError("ParentId", "父栏目不是常规栏目，不能添加子栏目。"); //此处验证父栏目不能是其本身 else if (category.ParentId == category.CategoryId) ModelState.AddModelError("ParentId", "父栏目不能是其本身。"); //此处验证父栏目不能是其子栏目 else if (_parentCategory.ParentPath.IndexOf(_category.ParentPath + "," + _category.CategoryId) == 0) ModelState.AddModelError("ParentId", "父栏目不能是其子栏目。"); //设置父栏目路径 else category.ParentPath = _parentCategory.ParentPath + "," + _parentCategory.CategoryId; } //根据栏目类型验证字段 switch (category.Type) { case 0://常规栏目 if (string.IsNullOrEmpty(category.Model))//模型为空 { category.ContentView = category.LinkUrl = category.RecordUnit = category.RecordName = null; category.ContentOrder = category.PageSize = null; } else { if (string.IsNullOrEmpty(category.CategoryView)) ModelState.AddModelError("CategoryView", "栏目视图不能为空。"); if (string.IsNullOrEmpty(category.ContentView)) ModelState.AddModelError("ContentView", "内容视图不能为空。"); if (category.ContentOrder == null) ModelState.AddModelError("ContentOrder", "内容排序方式不能为空。"); if (category.PageSize == null) ModelState.AddModelError("PageSize", "每页记录数不能为空。"); if (string.IsNullOrEmpty(category.RecordUnit)) ModelState.AddModelError("RecordUnit", "记录单位不能为空。"); if (string.IsNullOrEmpty(category.RecordName)) ModelState.AddModelError("RecordName", "记录名称不能为空。"); category.LinkUrl = null; } break; case 1://单页栏目 if (categoryRepository.Children(category.CategoryId).Count() != 0) ModelState.AddModelError("Type", "存在子栏目，无法将栏目类型设为单页栏目。"); if (string.IsNullOrEmpty(category.CategoryView)) ModelState.AddModelError("CategoryView", "栏目视图不能为空。"); category.Model = category.ContentView = category.LinkUrl = category.RecordUnit = category.RecordName = null; category.ContentOrder = category.PageSize = null; break; case 2: if (categoryRepository.Children(category.CategoryId).Count() != 0) ModelState.AddModelError("Type", "存在子栏目，无法将栏目类型设为外部链接。"); if (string.IsNullOrEmpty(category.LinkUrl)) ModelState.AddModelError("LinkUrl", "链接地址不能为空。"); category.Model = category.CategoryView = category.ContentView = category.RecordUnit = category.RecordName = category.ContentView = null; category.ContentOrder = category.PageSize = null; break; } //存在逻辑验证错误 if (!ModelState.IsValid) return Json(new JsonViewModel(ModelState)); else { if (categoryRepository.Modify(category)) { //判断父栏目是否更改 if (category.ParentId != _category.ParentId) categoryRepository.ChangeChildrenParentParth(_category.ParentPath + "," + category.CategoryId, category.ParentPath + "," + category.CategoryId); return Json(new JsonViewModel() { Success = true, Message = "修改栏目成功！" }); } else return Json(new JsonViewModel() { Success = false, Message = "数据未发生更改。" }); } } //模型验证失败 else return Json(new JsonViewModel(ModelState)); }
代码见网盘或群Ninesky2013-12-06.rar
