Angularjs下拉联动（2）

<select ng-model="devicetype" ng-options="x.category for x in devices" ng-change="changeType(devicetype)">
    <option value="">--设备--</option>
</select>

$scope.devices = [
     {"category":"大家电"},
         {"category":"红外感应"},
     {"category":"监控"},
     {"category":"灯光"},
]
// 根据大类来获取设备列表
$scope.changeType = function(x){
    $log.log(x.category)
    //TODO: 真正使用肯定是要用$http来请求设备列表
    //暂时测试使用下面的
    switch(x.category){
    case "大家电":
            $scope.yourdevices = [
                {"dev":"电视机(mac:32309fsaf)"},
                {"dev":"洗衣机(mac:32309fsaf)"},
                {"dev":"冰箱(mac:32309dqsq)"},
                {"dev":"空调(mac:32309fsaf)"}
            ];
            break;
    }
}

<select ng-model="yourdevice" ng-options="x.dev for x in yourdevices" ng-change="changeDev(yourdevice)">
    <option value="">--你的设备--</option>
</select>

$scope.changeDev = function (x) {
  $log.log(x.dev)
  switch (x.dev) {
    case '电视机(mac:32309fsaf)':
      $scope.params = [
        {
          'display_name': '开关',
          'data_type': 'bool',
          'data_range': [ '开','关']
        },
        {
          'display_name': '温度',
          'data_type': 'num',
          'data_range': [30]
        }
      ]
      //此处将json转换成对象，方便下面的属性相关操作，例如“开关”属性，要找去其相关的类型数据和值
      var paramsarr = $scope.params;
      var paramobj = {
      };
      paramsarr.forEach(function (v, i) {
        paramobj[v.display_name] = v;
      })
      $scope.paramobjs = paramobj;
  }
}

<select ng-model="param" ng-options="p.display_name for p in params" ng-change="changeParam(param.display_name)">
    <option value="">--属性--</option>
</select>

//获取数据类型和数据值
$scope.changeParam = function (x) {
  var pobj = $scope.paramobjs;
  $scope.views = pobj[x];
  $scope.type = $scope.views.data_type
  $log.log($scope.views)
}

<div ng-switch="type">
        <div ng-switch-when="bool" style="margin: -20px auto auto 90px;">
            <label ng-repeat="x in views.data_range">
                <input type="radio" name="radio" value="{{x}}">{{x}}
            </label>
        </div>
        <div ng-switch-when="num" style="margin: -20px auto auto 90px;">
            <select ng-model="compare">
                <option value="0">&lt;</option>
                <option value="1">=</option>
                <option value="2">&gt;</option>
            </select>
            {{views.data_range}}
            <input type="text">
        </div>
    </div>