react admin article : https://gkueny.fr/react-admin

have-to-login.component.js

import React, {Component} from 'react';
import * as firebase      from 'firebase';

class HaveToLogginComponent extends Component {
    
    constructor() {
        super();
        this.state = {
            authenticate : false   
        }
    }
    componentDidMount() {
        this.checkUserStatus();
    }
    componentDidUpdate() {
        this.checkUserStatus();
    }
  
    checkUserStatus = () => {
        firebase.auth().onAuthStateChanged( user => {

            let statut = user
                ? true
                : false;

            this.updateUserStatus(statut);
        });
    };

    updateUserStatus = (isLogIn) => {
        // User not login, and previously authenticate
        if (!isLogIn && this.state.authenticate)
            this.setState({
                authenticate : false
            });
        // User login, and previously not authenticate
        else if (isLogIn && !this.state.authenticate)
            this.setState({
                authenticate : true
            });
    }
    
    render() {
        if (this.props.state.user.userLogin)
            return this.props.children;
        else
            return <p> error </p>;
    }
}

HaveToLogginComponent.propTypes = {
    children    : React.PropTypes.object
};

export default HaveToLogginComponent;

react-admin

//react admin

solution-2.js

import React, {Component} from 'react';

export default class AdminComponent extends Component
{
    constructor() {
        this.isAuthenticate = false;
    }
    componentDidMount() {
        this.checkLogin();
    }
    componentDidUpdate() {
        this.checkLogin();
    }

    checkLogin() {
        this.isAuthenticate = false;
        if(this.props.functionOfContainerWhichCheckLogin())
            this.isAuthenticate = true;
        else            
            this.props.functionWhichGoToLogin();
    }

    render() {
        if(!this.isAuthenticate) {
            return null;
        } else {
            return (
                <p> Admin </p>
            );
        }
    }
}