为什么 ng-model 没有定义？

Question

我有一个表单中的三个 angular-ui-bootstrap typehead

<form>
<div class="form-group">
   <label for="fieldname" class="col-md-3 control-label">Name</label>
   <div class="col-md-6">
      <input type="text" ng-model="newItem.customSelected" typeahead="name as name.name for name in members | filter:{name:$viewValue}" class="form-control" />
   </div>
</div>
<div class="form-group">
   <label for="fieldhname" class="col-md-3 control-label">House name</label>
   <div class="col-md-6">
      <input type="text" ng-model="newItem.customSelected1" typeahead="house_name as house_name.house_name for house_name in family | filter:{house_name:$viewValue}" class="form-control" />

   </div>
</div>
<div class="form-group">
   <label for="" class="col-md-3 control-label"><?php echo $this->lang->line('label_family_id'); ?></label>
   <div class="col-md-6">
      <input type="text" ng-model="newItem.customSelected2" typeahead="fm as fm.family_reg_no for fm in family | filter:{family_reg_no:$viewValue}" class="form-control" />
   </div>
</div>
<div class="col-md-3"></div>
<input type="button" class="finish btn-success btn" ng-click="search(newItem)" value="Search"/>
</form>

搜索按钮调用函数，

$scope.search = function(item) {
    item['id']=item.customSelected.id;
    item['family_id']=item.customSelected1.id;
    item['family_id']=item.customSelected2.id;
     delete data.customSelected;




     FamilyMemSearch.get(item, function (response) { // success

            $scope.tableData = response.data; // store result to variable

            }, function (error) { // ajax loading error
                Data.errorMsg(); // display error notification
            });

      };

但它显示错误 customSelected1,customSelected2 未定义。

Answer 1

ngModel只有在第一次更改值后才会自动创建属性。如果您不初始化item.customSelected1，item.customSelected2并在页面加载后立即单击搜索，则值将为undefined。

尝试初始化您的item.customSelected1和item.customSelected2

app.controller("yourController",function($scope){
    $scope.newItem= {};
    $scope.newItem.customSelected1 = {};
    $scope.newItem.customSelected2 = {};
});