学用MVC4做网站三：3.2浏览栏目

序

一、用户

二、用户组

三、栏目

3.1添加栏目

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。