Reactjs 无法将react 路由状态从路由传递给子组件

当将JSX作为Route的子组件呈现时，路由属性不会传递给它们.

<Route path="/password-reset/:reset_key?" exact>
  <AuthLayout>        // <-- no route props
    <PasswordReset /> // <-- no route props
  </AuthLayout>
</Route>

使用renderprops 访问布线props ，并将其显式传递给AuthLayout和其他嵌套组件.

<Route
  path="/password-reset/:reset_key?"
  exact
  render={routeProps => (
    <AuthLayout {...routeProps}>
      <PasswordReset {...routeProps} />
    </AuthLayout>
  )}
/>

或者，你也可以用withRouter个高阶组件来装饰所有这些组件，以注入最近的Route英尺S路由props 作为props .

授权布局:

import React  from 'react';
import './auth.css';
import PropTypes from "prop-types";
import { withRouter } from "react-router-dom";
import { connect } from "react-redux";

class AuthLayout extends React.Component {
  componentDidMount() {
    if (this.props.auth.isAuthenticated) {
      this.props.history.push('/');
    }
  }

  render() {
    return (
      <div className="auth-background">
        <img
          alt=""
          className="logo"
          src={require("./logo1.png")}
        />
        <div id='auth-form'>
          {this.props.children}
        </div>
      </div>
    );
  }
}

const mapStateToProps = (state) => ({
  auth: state.auth
});

export default withRouter(connect(mapStateToProps)(AuthLayout));

请注意，情况并非如此.

import { withRouter } from "react-router-dom";

class LoginForm extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      email: '',
      password: '',
      errors: {}
    }
  }

  handleSubmit = values => {
    const { history, location } = this.props;
    const { email, password } = values;
    const userData = { email, password };

    const redirectUrl = location?.state?.redirectUrl ?? "/";

    this.props.loginUser(userData, redirectUrl, history);
  };

  render() {
    ...
  }
}

export default withRouter(Login);

由于Reaction类组件实际上已被弃用，因此您还可以考虑将这些类组件转换为函数组件，并使用适当的Reaction-Router-DOM挂钩.

示例:

授权布局:

import React  from 'react';
import './auth.css';
import { useHistory } from "react-router-dom";
import { useSelector } from "react-redux";

const AuthLayout = ({ children }) => {
  const history = useHistory();

  const isAuthenticated = useSelector(state => state.auth.isAuthenticated);

  React.useEffect(() => {
    if (isAuthenticated) {
      history.push("/");
    }
  }, [history, isAuthenticated]);

  return (
    <div className="auth-background">
      <img
        alt=""
        className="logo"
        src={require("./logo1.png")}
      />
      <div id='auth-form'>
        {children}
      </div>
    </div>
  );
};

export default AuthLayout;

请注意，情况并非如此.

import { useDispatch } from "react-redux";
import { useHistory, useLocation } from "react-router-dom";

const LoginForm = () =>  {
  const dispatch = useDispatch();
  const history = useHistory();
  const { state } = useLocation();

  const [email, setEmail] = React.useState("");
  const [password, setPassword] = React.useState("");
  const [errors, setErrors] = React.useState({});

  const handleSubmit = values => {
    const { history, location } = this.props;
    const { email, password } = values;
    const userData = { email, password };

    const redirectUrl = state?.redirectUrl ?? "/";

    dispatch(loginUser(userData, redirectUrl, history));
  };

  return (
    ...
  );
}

export default Login;

另一种 Select 仍然是重构路由代码，以呈现与MainLayout类似的单个AuthLayout.

示例:

<Switch>
  <Route path={["/password-reset/:reset_key?", "/register", "/login"]}>
    <AuthLayout>
      <Switch>
        <Route path="/password-reset/:reset_key?" component={PasswordReset} />
        <Route path="/register" component={Register} />
        <Route path="/login" component={Login} />
      </Switch>
    </AuthLayout>
  </Route>
                      
  {/* Other MainLayout routes */}
  <Route>
    <MainLayout>
      <Switch>
        <Route path="/search" component={SearchResults} />
        <Route path="/user/:user_id" component={Profile} />
        <PrivateRoute path="/settings" component={Settings} />

        <Route path="/communities/view/:community_id" component={CommunityView} />
        <PrivateRoute path="/communities/edit/:community_id" component={CommunityEdit} />
        <PrivateRoute path="/communities/new" component={CommunityNew} />
        <Route path="/communities" component={CommunityDashboard} />

        <Route path='/404' component={Error404} />
        <Route path="/" exact component={Dashboard} />
        <Redirect from='*' to='/404' />
      </Switch>
    </MainLayout>
  </Route>
</Switch>