Surveyjs：choicesVisibleIf基于项目属性

问题描述

是否可以根据商品属性在Dropdown中启用/禁用元素？

var json = {
  questions: [
  {
    type: "dropdown",name: "car",title: "What car are you driving?",isrequired: true,colCount: 0,choices: [
      { title: "One",value: "91",isDeleted: true },{ title: "Two",isDeleted: false },{ title: "Three",isDeleted: false }
    ],/** What is the expression should I use here? */
    choicesVisibleIf: "{item}.isDeleted == false"
  }
  ]};

这里是游乐场：https://plnkr.co/edit/LIp8pZbyXVB3UfBD

谢谢。

解决方法

我认为tt从restFul Api中获取choicesByUrl并在/ getChoices？isDeleted = true .....处添加isDeleted过滤器会更容易，因为无论如何标题和值都是动态的

var json = {
    questions: [
        {
            type: "dropdown",name: "car",title: "What car are you driving?",isRequired: true,colCount: 0,choicesByUrl: {
                        url: "https://getChoices/rest/v2?isDeleted=false",valueName: "title"
                    }
        }
    ]
};