angularjs 的指令template中使用ng-if="{{item.name}}" 报错

.directive('formComs',function(){
  return {
    restrict:'E',
   template:'<div ng-if="{{item.name}} " class="item-input item-stacked-label" id="{{item.id}}" name="{{item.title}}">'+
                    '<span class="input-label">{{item.title}}</span>'+
                    '<input type="text">'+
              '</div>'  ,
    replace:true,
  }
})

html:<form-coms ng-repeat="item in items" ></form-coms>

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根据 https://docs.angularjs.org/api/ng/directive/ngIf，ng-if 的值是 expression。所以改成ng-if="item.name" 就好了