use*_*583 5 javascript reactjs react-router
我想集中精力于withRouter包装的组件。但是,当我给组件提供引用时,会收到有关将引用分配给无状态组件的警告。我假设这是因为ref被附加到withRouter HOC而不是我的组件上,因为它是有状态的。我的常规设置如下所示:
// InnerComponent.js
class InnerComponent extends Component {
constructor(props) {
super(props);
}
}
export default withRouter(InnerComponent);
// App.js
class App extends Component {
constructor(props) {
super(props);
this.myRef = React.createRef();
}
render() {
return (
<Router>
<InnerComponent ref={this.myRef}>
</Router>
);
}
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我看到这个问题以前曾被问过,但从未得到回答。我是React的新手,如果我遗漏了一些明显的东西,请原谅我。提前致谢。
编辑:我很确定我需要的是这里:https : //reacttraining.com/react-router/web/api/withRouter,在withRouter文档的wraptedComponentRef部分中,但我不知道如何实现它。
根据@Ranjith Kumar 的回答,我提出了以下解决方案:
withRef选项)const withRouterAndRef = Wrapped => {
const WithRouter = withRouter(({ forwardRef, ...otherProps }) => (
<Wrapped ref={forwardRef} {...otherProps} />
))
const WithRouterAndRef = React.forwardRef((props, ref) => (
<WithRouter {...props} forwardRef={ref} />
))
const name = Wrapped.displayName || Wrapped.name
WithRouterAndRef.displayName = `withRouterAndRef(${name})`
return WithRouterAndRef
}
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用法是一样的:
// Before
export default withRouter(MyComponent)
// After
export default withRouterAndRef(MyComponent)
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小智 6
使用 HOC 转发内部组件引用的withRouterHOC组件
const withRouterInnerRef = (WrappedComponent) => {
class InnerComponentWithRef extends React.Component {
render() {
const { forwardRef, ...rest } = this.props;
return <WrappedComponent {...rest} ref={forwardRef} />;
}
}
const ComponentWithRef = withRouter(InnerComponentWithRef, { withRef: true });
return React.forwardRef((props, ref) => {
return <ComponentWithRef {...props} forwardRef={ref} />;
});
}
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用法
class InnerComponent extends Component {
constructor(props) {
super(props);
}
}
export default withRouterInnerRef(InnerComponent);
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我认为你可以像这样使用React.forwardRef(https://reactjs.org/docs/forwarding-refs.html ):
// InnerComponent.js
class InnerComponent extends Component {
constructor(props) {
super(props);
}
}
export default withRouter(InnerComponent);
// App.js
const InnerComponentWithRef = React.forwardRef((props, ref) => <InnerComponent ref={ref} props={props} />);
class App extends Component {
constructor(props) {
super(props);
this.myRef = React.createRef();
}
render() {
return (
<Router>
<InnerComponentWithRef ref={this.myRef}>
</Router>
);
}
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注意:未经测试的代码!
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