启用 redux-form 并将焦点设置为字段

默认情况下我禁用了表单字段，当用户单击按钮 Edit 时，它将启用该字段.我也想把重点放在这个领域，但我不知道怎么做.我已经为该字段创建了 ref 并在其上尝试了一些 focus() 函数，但它没有工作.您可以在 sandbox 上试用.

I've got disabled form field by default and when user clicks on button Edit, it will enable the field. I also want to set focus on the field, but I don't know how. I've created ref to the field and tried some focus() function on it, but it hasn't worked. You can try it here on sandbox.