Zy76278

### What problem does this feature solve? 比如远程搜索接口返回有三个字段，name、age、code,其中name为label，code为value，搜索需要根据name和age字段查询。 现在设置name为label，code为value，输入年龄，option的list数组里面有数据，但是页面下拉框里显示没有数据 ### What does the proposed API look like? 在组件上绑定一个属性，可以是字符串和数组，然后查询时可以根据里面的字段以及label查询和匹配option选项，没设置该属性时默认根据label查询

Do environment variables support collections

1

**Please describe feature/problem details and the solution you'd like.** Now I have a chain request, and the later request needs the result of the previous request. Now I set an...