Routes not working in react-router v4 - reactjs

Question

I am trying to setup react router in my react application. The versions I am using are
"react-dom": "^16.2.0",
"react-redux": "^5.0.6",
"react-router-dom": "^4.2.2",
"react-router-redux": "^5.0.0-alpha.9",
"redux": "^3.7.2",
I am using reacr-router-redux for this appilication.
Application Flow: I have two pages in my application: Login Page and App Page. Landing page should be Login Page and when I click on Login button then it should take me to the App Page. There are three sections in App Page: Header, Sidebar and Content Section. Content section is dynamic and renders two different layouts depending on which link is clicked in sidebar. Only one component at a time can be rendered in content section.
Problem: I have defined routes. I get landed to LoginPage correctly. When I click to Login, I get navigated to app page also correctly. But when I click a link on sidebar, all the components (sidebar, header and content section) disappears.
My code
main index.js
import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import registerServiceWorker from './registerServiceWorker';
import Root from './Container/Root'
import {Provider} from 'react-redux'
import {ConnectedRouter} from 'react-router-redux'
import store, {history} from './store'
ReactDOM.render(
<Provider store={store}>
<ConnectedRouter history={history}>
<div>
<Root />
</div>
</ConnectedRouter>
</Provider>,
document.getElementById('root'));
registerServiceWorker();
Root/index.js
import React, {Component, PropTypes } from 'react'
import { Provider } from 'react-redux'
import LoginPage from '../../Pages/LoginPage'
import App from '../../Container/App/App'
import { Route, Link } from 'react-router-dom'
const styles = {
container: {
height: '100vh',
width : '100vw',
position: 'relative'
}
}
class Root extends Component {
render () {
return (
<div>
<div>
<main>
<Route exact path="/" component={LoginPage} />
<Route exact path="/app" component={App} />
</main>
</div>
</div>
)
}
}
export default Root
App.js (here's where the problem is)
import React, { Component } from 'react';
import { Route, Link } from 'react-router-dom'
import Sidebar from '../../Components/Sidebar'
import TriviaPanel from '../../Components/TriviaPanel'
import Header from '../../Components/Header'
import ImagePanel from '../../Components/ImagePanel'
import LoginPage from '../../Pages/LoginPage'
class App extends Component {
render() {
return (
<div>
{/*<LoginPage/> */}
<Header/>
<Sidebar/>
<div>
<main>
<Route component={TriviaPanel} />
<Route exact path="/trivia" component={TriviaPanel} />
<Route exact path="/image" component={ImagePanel} />
</main>
</div>
</div>
);
}
}
export default App;
MenuPanel/index.js (This is the sidebar I change the content component from)
import React, { Component } from 'react';
import { push } from 'react-router-redux'
import { bindActionCreators } from 'redux'
import { connect } from 'react-redux'
const styles = require('./sidebar.css');
class MenuPanel extends Component {
constructor(){
super();
this.state = {
activePanel: "trivia"
}
}
toImagePage(){
this.setState({activePanel:"image"},()=>{
this.props.toImagePage()
})
}
toTriviaPage(){
this.setState({activePanel:"trivia"},()=>{
this.props.toTriviaPage()
})
}
render() {
return (
<div>
<div className="navbar-side">
<div className="tessact-logo"></div>
<div className={`navbar-item ${this.state.activePanel == "trivia"? "active":""}`} onClick={() => this.toTriviaPage()}>
<a className="navbar-item-link"><span className="fa fa-comment"></span> TRIVIA</a>
</div>
<div className={`navbar-item ${this.state.activePanel == "image"? "active":""}`} onClick={() => this.toImagePage()}>
<a className="navbar-item-link"><span className="fa fa-picture-o"></span> IMAGES</a>
<div className="navbar-item-inside">
<a className="navbar-item-inside-link">PERSONSS</a>
<a className="navbar-item-inside-link">BRANDS</a>
<a className="navbar-item-inside-link">OBJECTS</a>
</div>
</div>
<div className="navbar-item">
<a className="navbar-item-link"><span className="fa fa-tags"></span> KEYWORDS</a>
</div>
</div>
</div>
);
}
}
const mapDispatchToProps = dispatch => bindActionCreators({
toTriviaPage: () => push('/trivia'),
toImagePage: () => push('/image')
}, dispatch)
export default connect(
null,
mapDispatchToProps
)(MenuPanel)
I tried this also
class App extends Component {
render() {
return (
<BrowserRouter>
<div>
{/*<LoginPage/> */}
<Header/>
<Sidebar/>
<switch>
<Route exact path="/trivia" component={TriviaPanel}/>
<Route exact path="/image" component={ImagePanel}/>
</switch>
<Route component={TriviaPanel}/>
</div>
</BrowserRouter>
);
}
}
export default App;
What is wrong in what I am doing? In previous versions of router it was pretty simple to define child routes and everything. I am new to this router v4.

Answer 1

The problem is with your routes. i faced the same problem recently. so here is your problem. you clicked the link for 'app'. the url becomes
http://localhost/app
now all routes defined inisde the app component must be /app/link.
therefore
<link to='/trivia'>Trivia</link> //example. use whatever metohd you are using to route instead. use the given url
<Route exact path="/trivia" component={TriviaPanel}/>
becomes
<link to='/app/trivia'>Trivia</link>
<Route exact path="/app/trivia" component={TriviaPanel}/>
this tells react that it needs to go into the app component and then search for the route tag in its jsx to render.