the official example of customized tables using render is simple: 
  https://www.iviewui.com/compo.
defines a slightly more complex layout of its own, using Select components and bidirectional binding.
</Button>
</div> tried to customize it with render. It took a long time and searched the Internet for a long time, but it didn"t succeed. 
 is mainly reflected in this problem: 
- v-model/v-for/:value/:key doesn"t know how to write with render;
I hope God will give me some advice.
