学用MVC4做网站三：3.2浏览栏目
3.2浏览栏目
浏览栏目这块做个一个树形列表，添加栏目的左侧部分只写了句“左侧列表”就是指这个树形列表，等我们写完替换一下就可以了。
先在【CategoryController】里面添加[ManagePartialTree]action，这里的Partial用来说明是分部视图
/// <summary> /// 栏目列表局部树视图 /// </summary> /// <returns></returns> [AdminAuthorize] public ActionResult ManagePartialTree() { return View(); }
右键添加分部视图ManagePartialTree.cshtml。分部视图里用easyui的tree来显示栏目，使用异步加载，视图代码只有一行。
<ul id="ctree" class="easyui-tree" data-options="url:'@Url.Action("ManageTreeChildrenJson", "Category")'"></ul>
这里从[anageTreeChildrenJson]action获取的json数据。
在【CategoryController】添加JsonResult类型的[anageTreeChildrenJson]
/// <summary> /// 子栏目树形控件Json数据 /// </summary> /// <param name="id">栏目id</param> /// <returns></returns> [AdminAuthorize] public JsonResult ManageTreeChildrenJson(int id = 0) { categoryRsy = new CategoryRepository(); var _children = categoryRsy.Children(id); List<Tree> _trees = new List<Tree>(_children.Count()); foreach(var c in _children) { Tree _t = new Tree { id = c.CategoryId, text = c.Name}; switch (c.Type) { case 0: _t.state = "closed"; _t.iconCls = "icon-general"; break; case 1: _t.state = "open"; _t.iconCls = "icon-page"; break; case 2: _t.state = "open"; _t.iconCls = "icon-link"; break; } _trees.Add(_t); } return Json(_trees, JsonRequestBehavior.AllowGet); }
这里默认id=0，根据id查找子栏目，然后遍历子栏目生成树的节点数据。
switch (c.Type) 是根据栏目类型不同来，来设置节点状态并，设置不同的图标。最后以Json类型返回。
修改一下上一节中添加栏目的视图ManageAdd.cshtml，将左侧列表替换成@Html.Action("ManagePartialTree", "Category")。替换后ManageAdd.cshtml
@model Ninesky.Models.Category @{ ViewBag.Title = "ManageAdd"; Layout = "~/Views/Layout/_Manage.cshtml"; } <div class="workspace"> <div class="inside"> <div class="notebar"> <img alt="" src="~/Skins/Default/Manage/Images/Category.gif" />添加栏目 </div> @using (Html.BeginForm()) { @Html.ValidationSummary(true) <fieldset> <legend>栏目</legend> <ul> <li> <div class="editor-label"> @Html.LabelFor(model => model.Type) </div> <div class="editor-field"> @Html.DropDownList("Type") @Html.ValidationMessageFor(model => model.Type) @Html.DisplayDescriptionFor(model => model.Type) </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) @Html.DisplayDescriptionFor(model => model.Name) </div> </li> <li> <div class="editor-label"> @Html.LabelFor(model => model.ParentId) </div> <div class="editor-field"> @Html.TextBox("ParentId", 0, new { @class = "easyui-combotree", data_options = "url:'" + Url.Action("JsonTreeParent", "Category") + "'" }) @Html.ValidationMessageFor(model => model.ParentId) @Html.DisplayDescriptionFor(model => model.ParentId) </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) @Html.DisplayDescriptionFor(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) @Html.DisplayDescriptionFor(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) @Html.DisplayDescriptionFor(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) @Html.DisplayDescriptionFor(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, new { value = 0 }) @Html.ValidationMessageFor(model => model.Order) @Html.DisplayDescriptionFor(model => model.Order) </div> </li> <li> <div class="editor-label"> </div> <div class="editor-field"> <input type="submit" value="添加" /> </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(); } else if (v == "1") { $("#li_model").hide(); $("#li_categoryview").show(); $("#li_contentview").hide(); $("#li_nav").hide(); } else if (v == "2") { $("#li_model").hide(); $("#li_categoryview").hide(); $("#li_contentview").hide(); $("#li_nav").show(); } } </script> @section Scripts { @Styles.Render("~/EasyUi/icon") @Scripts.Render("~/bundles/EasyUi") @Scripts.Render("~/bundles/jqueryval") }
添加一个单页类型节点，在添加一个链接类型节点看一下
点一下栏目树前的小箭头能够显示和关闭下级栏目。但点栏目名称没什么反应，我希望的是点栏目名称能够跳转到栏目详细信息页面~/Category/ManageDetails/id，现在用js实现。打开ManagePartialTree.cshtml，在下面添加脚本。
<script type="text/javascript"> using("tree", function () { $("#ctree").tree({ onClick: function (node) { top.location ="@Url.Action("ManageDetails", "Category")/"+node.id; } }); }); </script>
完工。