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MVC4制作網(wǎng)站教程第四章 瀏覽欄目4.2

 更新時間：2016年08月23日 10:33:56   作者：洞庭夕照  
這篇文章主要為大家詳細(xì)介紹了MVC4制作網(wǎng)站教程，瀏覽欄目功能實現(xiàn)代碼，具有一定的參考價值，感興趣的小伙伴們可以參考一下

序

一、用戶

二、用戶組

三、欄目

3.1添加欄目

3.2瀏覽欄目

瀏覽欄目這塊做個一個樹形列表，添加欄目的左側(cè)部分只寫了句“左側(cè)列表”就是指這個樹形列表，等我們寫完替換一下就可以了。

先在【CategoryController】里面添加[ManagePartialTree]action，這里的Partial用來說明是分部視圖

/// <summary>
    /// 欄目列表局部樹視圖
    /// </summary>
    /// <returns></returns>
    [AdminAuthorize]
    public ActionResult ManagePartialTree()
    {
      return View();
    }

右鍵添加分部視圖ManagePartialTree.cshtml。分部視圖里用easyui的tree來顯示欄目，使用異步加載，視圖代碼只有一行。

復(fù)制代碼 代碼如下:
<ul id="ctree" class="easyui-tree" data-options="url:'@Url.Action("ManageTreeChildrenJson", "Category")'"></ul>

這里從[anageTreeChildrenJson]action獲取的json數(shù)據(jù)。

在【CategoryController】添加JsonResult類型的[anageTreeChildrenJson]

/// <summary>
    /// 子欄目樹形控件Json數(shù)據(jù)
    /// </summary>
    /// <param name="id">欄目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);
    }

這里默認(rèn)id=0，根據(jù)id查找子欄目，然后遍歷子欄目生成樹的節(jié)點數(shù)據(jù)。

switch (c.Type) 是根據(jù)欄目類型不同來，來設(shè)置節(jié)點狀態(tài)并，設(shè)置不同的圖標(biāo)。最后以Json類型返回。

修改一下上一節(jié)中添加欄目的視圖ManageAdd.cshtml，將左側(cè)列表替換成@Html.Action("ManagePartialTree", "Category")。替換后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" />添加欄目
    </div>
    @using (Html.BeginForm())
    {
      @Html.ValidationSummary(true)

      <fieldset>
        <legend>欄目</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")
}

添加一個單頁類型節(jié)點，在添加一個鏈接類型節(jié)點看一下

點一下欄目樹前的小箭頭能夠顯示和關(guān)閉下級欄目。但點欄目名稱沒什么反應(yīng)，我希望的是點欄目名稱能夠跳轉(zhuǎn)到欄目詳細(xì)信息頁面~/Category/ManageDetails/id，現(xiàn)在用js實現(xiàn)。打開ManagePartialTree.cshtml，在下面添加腳本。

<script type="text/javascript">
  using("tree", function () {
    $("#ctree").tree({
      onClick: function (node) {
        top.location ="@Url.Action("ManageDetails", "Category")/"+node.id;
      }
    });
  });
</script>

完工。

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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