Reputation: 1446
i have component that import a Link from react-router-dom
import React, { Component } from 'react';
import { Link } from 'react-router-dom';
class Sidebar extends Component{
render() {
return (
<div className="be-left-sidebar">
<div className="left-sidebar-wrapper"><a href="#" className="left-sidebar-toggle">Blank Page</a>
<div className="left-sidebar-spacer">
<div className="left-sidebar-scroll">
<div className="left-sidebar-content">
<ul className="sidebar-elements">
<li className="divider">Menu</li>
<li className="parent"><a href="#"><i className="icon mdi mdi-home" /><span>Home</span></a>
<ul className="sub-menu">
<li><Link to='/'>Home</Link>
</li>
</ul>
</li>
</ul>
</div>
</div>
</div>
<div className="progress-widget">
<div className="progress-data"><span className="progress-value">60%</span><span className="name">Current Project</span></div>
<div className="progress">
<div style={{width: '60%'}} className="progress-bar progress-bar-primary" />
</div>
</div>
</div>
</div>
);
}
};
export default Sidebar;
then console.log shows an error
Warning: Failed context type: The context router is marked as required in Link, but its value is undefined.
Cannot read property 'history' of undefined
`
i am new in react and i am using react router v4.1.1
anyone can help me? thanks
Upvotes: 0
Views: 670
Reputation: 10964
In React router v4, we have Switch, Route and Link components that we import from react-router-dom and configure our router as follows:
import { Switch, Route, Link } from 'react-router-dom';
<span>LINKS:</span>
<ul>
<li onClick={this.props.goToDefault}><Link to={'/'}>Go To Default</Link></li>
<li onClick={this.props.goToSub1}><Link to={'/left-sub1'}>Go To One</Link></li>
<li onClick={this.props.goToSub2}><Link to={'/left-sub2'}>Go To Two</Link></li>
</ul>
<Switch>
<Route exact path='/' component={LeftSubDefault} />
<Route path='/left-sub1' component={LeftSubOne} />
<Route path='/left-sub2' component={LeftSubTwo} />
</Switch>
In the app.js or whatever your entry file is. Wrap your App component inside BrowserRouter as follows:
import { BrowserRouter } from 'react-router-dom';
<BrowserRouter>
<App />
</BrowserRouter>
Here is a wonderful article that may help.
Upvotes: 0
Reputation: 798
Make sure you have your component appearing inside <Router>
component.
Upvotes: 1