MVC4制作网站教程第四章 更新栏目4.3

php  /  管理员 发布于 7年前   152

序
 一、用户
 二、用户组
 三、栏目
3.1添加栏目
3.2浏览栏目 
3.3更新栏目 

上次在树形列表里面点击栏目名称后跳转到详细信息页面~/Category/ManageDetails/id。在详细页面里点修改，来完成栏目资料修改。

 先打开【CategoryController】添加[ManageDetails(int id)]action 

/// <summary>    /// 栏目详细资料    /// </summary>    /// <param name="id"></param>    /// <returns></returns>    public ActionResult ManageDetails(int id)    {      categoryRsy = new CategoryRepository();      var _node = categoryRsy.Find(id);      if (_node == null)      {        Error _e = new Error { Title = "栏目不存在", Details = "栏目不存在", Cause = Server.UrlEncode("<li>栏目已经删除</li>"), Solution = Server.UrlEncode("<li>返回<a href='https:/article/" + Url.Action("Manage", "Cayegory") + "'>栏目栏目管理</a></li>") };        return RedirectToAction("ManageError", "Prompt", _e);      }      ModuleRepository _moduleRsy = new ModuleRepository();      var _modules = _moduleRsy.List(true);      List<SelectListItem> _slimodule = new List<SelectListItem>(_modules.Count());      foreach (Module _module in _modules)      {        if (_node.Model == _module.Model) _slimodule.Add(new SelectListItem { Text = _module.Name, Value = _module.Model, Selected = true });        else _slimodule.Add(new SelectListItem { Text = _module.Name, Value = _module.Model });      }      ViewData.Add("Model", _slimodule);      var _type = TypeSelectList;      _type.SingleOrDefault(t => t.Value == _node.Type.ToString()).Selected = true;      ViewData.Add("Type", _type);      return View(_node);    }

代码先是看栏目是否存在，不存在跳转到错误页面，后面是添加"Model“和“Type”的ViewData
右键添加强类型视图ManageDetails.cshtml,内容基本与ManageAdd.cshtml类似 

@model Ninesky.Models.Category@{  ViewBag.Title = "栏目信息";  Layout = "~/Views/Layout/_Manage.cshtml";}<div class="workspace">  <div class="inside">    <div class="notebar">      <img alt="" src="https:/article/~/Skins/Default/Manage/Images/Category.gif" />栏目信息    </div>    @using (Html.BeginForm("ManageUpdate","Category"))    {      @Html.ValidationSummary(true)      <fieldset>        <legend>详细资料</legend>        <ul>          @Html.HiddenFor(model => model.CategoryId)          <li><div class="editor-label">  @Html.LabelFor(model => model.CategoryId)</div><div class="editor-field">  @Html.DisplayTextFor(model => model.CategoryId)</div>          </li>          <li><div class="editor-label">  @Html.LabelFor(model => model.Name)</div><div class="editor-field">  @Html.EditorFor(model => model.Name)  @Html.ValidationMessageFor(model => model.Name)</div>          </li>          <li><div class="editor-label">  @Html.LabelFor(model => model.ParentId)</div><div class="editor-field">  @Html.TextBoxFor(model => model.ParentId, new { @class = "easyui-combotree", data_options = "url:'" + Url.Action("JsonTreeParent", "Category") + "'" })  @Html.ValidationMessageFor(model => model.ParentId)</div>          </li>          <li><div class="editor-label">  @Html.LabelFor(model => model.Type)</div><div class="editor-field">  @Html.DropDownList("Type")  @Html.ValidationMessageFor(model => model.Type)</div>          </li>          <li id="li_model"><div class="editor-label">  @Html.LabelFor(model => model.Model)</div><div class="editor-field">  @Html.DropDownList("Model")  @Html.ValidationMessageFor(model => model.Model)</div>          </li>          <li id="li_categoryview"><div class="editor-label">  @Html.LabelFor(model => model.CategoryView)</div><div class="editor-field">  @Html.EditorFor(model => model.CategoryView)  @Html.ValidationMessageFor(model => model.CategoryView)</div>          </li>          <li id="li_contentview"><div class="editor-label">  @Html.LabelFor(model => model.ContentView)</div><div class="editor-field">  @Html.EditorFor(model => model.ContentView)  @Html.ValidationMessageFor(model => model.ContentView)</div>          </li>          <li id="li_nav"><div class="editor-label">  @Html.LabelFor(model => model.Navigation)</div><div class="editor-field">  @Html.EditorFor(model => model.Navigation)  @Html.ValidationMessageFor(model => model.Navigation)</div>          </li>          <li><div class="editor-label">  @Html.LabelFor(model => model.Order)</div><div class="editor-field">  @Html.EditorFor(model => model.Order)  @Html.ValidationMessageFor(model => model.Order)</div>          </li>          <li><div class="editor-label">  <input id="Submit1" type="submit" value="修改" /></div><div class="editor-field">  </div>          </li>        </ul>      </fieldset>    }  </div></div><div class="left">  <div class="top"></div>  @Html.Action("ManagePartialTree", "Category")</div><div class="split"></div><div class="clear"></div><script type="text/javascript">  Details();  $("#Type").change(function () {    Details();  });  function Details() {    var v = $("#Type").val();    if (v == "0") {      $("#li_model").show();      $("#li_categoryview").show();      $("#li_contentview").show();      $("#li_nav").hide();      $("#Navigation").val("");    }    else if (v == "1") {      $("#li_model").hide();      $("#li_categoryview").show();      $("#li_contentview").hide();      $("#ContentView").val("");      $("#li_nav").hide();      $("#Navigation").val("");    }    else if (v == "2") {      $("#li_model").hide();      $("#li_categoryview").hide();      $("#CategoryView").val("");      $("#li_contentview").hide();      $("#ContentView").val("");      $("#li_nav").show();    }  }</script>@section Scripts {  @Styles.Render("~/EasyUi/icon")  @Scripts.Render("~/bundles/EasyUi")  @Scripts.Render("~/bundles/jqueryval")}

注意的是 @using (Html.BeginForm("ManageUpdate","Category"))这句；表示点修改按钮的后是向ManageUpdate提交数据。下面开始做这个action 

在【CategoryController】里添加httppost方式的[ManageUpdate]action 

/// <summary>    /// 修改栏目信息    /// </summary>    /// <param name="category"></param>    /// <returns></returns>    public ActionResult ManageUpdate(Category category)    {      switch (category.Type)      {        case 0:          category.Navigation = "";          break;        case 1:          category.Model = "";          category.ContentView = "";          category.Navigation = "";          break;        case 2:          category.Model = "";          category.CategoryView = "";          category.ContentView = "";          break;      }      categoryRsy = new CategoryRepository();      if (categoryRsy.Update(category))      {        Notice _n = new Notice { Title = "修改栏目成功", Details = "修改栏目成功！", DwellTime = 5, NavigationName = "栏目详细信息", NavigationUrl = Url.Action("ManageDetails", "Category", new { id = category.CategoryId }) };        return RedirectToAction("ManageNotice", "Prompt", _n);      }      else      {        Error _e = new Error { Title = "修改栏目失败", Details = "在修改栏目信息时，未能保存到数据库", Cause = "系统错误", Solution = Server.UrlEncode("<li>返回<a href='https:/article/" + Url.Action("ManageDetails", "Category", new { id = category.CategoryId }) + "'>栏目详细资料</a>页面，修改信息后重新操作</li><li>联系网站管理员</li>") };        return RedirectToAction("ManageError", "Prompt", _e);      }    }

很简单，首先是判断栏目类型，根据栏目类型清除无关数据，然后将修改保存到数据库。
试一下将“测试栏目”改成“公司简介” 

保存成功！

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