MVC4制作网站教程第四章 浏览栏目4.2

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。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。