Cascader动态加载，表单赋值的问题

[ybning]

• I have searched the issues of this repository and believe that this is not a duplicate.

What problem does this feature solve?

有这样一个场景：
Cascader的数据是动态加载的，现在做表单赋值，但实际动态加载出来的数据没有loadData出来，赋值不上。
请问有什么好的解决方案吗？

https://codesandbox.io/s/x38pooxmo4

What does the proposed API look like?

动态加载的数据能赋值

[ant-design-bot]

Translation of this issue:

---

Cascader dynamic loading, form assignment

• [] I have searched the issues of this repository and believe that this is not a duplicate.

What problem does this feature solve?

There is such a scenario:
Cascader's data is dynamically loaded, and now the form assignment, but the actual dynamic loading of the data without loadData out assignment is not.
Is there any good solution?

Https://codesandbox.io/s/x38pooxmo4

What does the proposed API look like?

Dynamically loaded data can be assigned

[zombieJ]

选择的数据如果未加载，可以在选择的时候触发一个加载，等加载完毕再赋值。

[ybning]

@zombieJ
但实际场景是：表单赋值是不需要进行选择操作的。表单赋值在componentDidMount后拿到数据就执行完成了。