如何使用渲染方法之外未声明的反应？

Question

I am using ustated library in my project.

In render method, I am using set like this:

render() {
    return (
            <ApiSubscribe>
                {api => (
                    <button content='CLICK ME' onClick={() => api.setMessage('RENDER CLICK')} />
                )}
            </ApiSubscribe>
    )
}

How can I call api.setMessage OUTSIDE of render? For example in componentDidMount ?

ApiSubscribe is:

export const ApiSubscribe = props => {
    // We also leave the subscribe "to" flexible, so you can have full
    // control over your subscripton from outside of the module
    return <Subscribe to={props.to || [Api]}>{props.children}</Subscribe>;
};

Answer 1

Like this?

class Child extends Component {
  componentDidMount() {
    this.props.api.setMessage('hey')
  }
  render {...}
]

let Parent = () => (
  <ApiSubscribe>
    {api => <Child api={api} />}
  </ApiSubscribe>
)

Answer 2

您可以创建一个HOC来包装您的组件，然后将容器从HOC组件以props的形式传递给子组件。