How to create a protected route with react-router-dom
and storing the response in localStorage, so that when a user tries to open next time they can view their details again. After login, they should redirect to the dashboard page.
All functionality is added in ContextApi. Codesandbox link : Code
I tried but was not able to achieve it
Route Page
import React, { useContext } from "react";
import { globalC } from "./context";
import { Route, Switch, BrowserRouter } from "react-router-dom";
import About from "./About";
import Dashboard from "./Dashboard";
import Login from "./Login";
import PageNotFound from "./PageNotFound";
function Routes() {
const { authLogin } = useContext(globalC);
console.log("authLogin", authLogin);
return (
<BrowserRouter>
<Switch>
{authLogin ? (
<>
<Route path="/dashboard" component={Dashboard} exact />
<Route exact path="/About" component={About} />
</>
) : (
<Route path="/" component={Login} exact />
)}
<Route component={PageNotFound} />
</Switch>
</BrowserRouter>
);
}
export default Routes;
Context Page
import React, { Component, createContext } from "react";
import axios from "axios";
export const globalC = createContext();
export class Gprov extends Component {
state = {
authLogin: null,
authLoginerror: null
};
componentDidMount() {
var localData = JSON.parse(localStorage.getItem("loginDetail"));
if (localData) {
this.setState({
authLogin: localData
});
}
}
loginData = async () => {
let payload = {
token: "ctz43XoULrgv_0p1pvq7tA",
data: {
name: "nameFirst",
email: "internetEmail",
phone: "phoneHome",
_repeat: 300
}
};
await axios
.post(`https://app.fakejson.com/q`, payload)
.then((res) => {
if (res.status === 200) {
this.setState({
authLogin: res.data
});
localStorage.setItem("loginDetail", JSON.stringify(res.data));
}
})
.catch((err) =>
this.setState({
authLoginerror: err
})
);
};
render() {
// console.log(localStorage.getItem("loginDetail"));
return (
<globalC.Provider
value={{
...this.state,
loginData: this.loginData
}}
>
{this.props.children}
</globalC.Provider>
);
}
}
<BrowserRouter>
<Switch>
{authLogin ? (
<>
<Route path="/dashboard" component={Dashboard} exact />
<Route exact path="/About" component={About} />
</>
) : (
<Route path="/" component={Login} exact />
)}
<Route component={PageNotFound} />
</Switch>
</BrowserRouter>
The Switch
doesn't handle rendering anything other than Route
and Redirect
components. If you want to "nest" like this then you need to wrap each in generic routes, but that is completely unnecessary.
Your login component also doesn't handle redirecting back to any "home" page or private routes that were originally being accessed.
react-router-dom
v6 and v7In version 6/7 custom route components no longer work, the preferred method is to use an auth layout component.
import { Navigate, Outlet } from 'react-router-dom'; // Note 1
const PrivateRoutes = () => {
const location = useLocation();
const { authLogin } = useContext(globalC);
if (authLogin === undefined) {
return null; // or loading indicator/spinner/etc
}
return authLogin
? <Outlet />
: <Navigate to="/login" replace state={{ from: location }} />;
}
...
<BrowserRouter>
<Routes>
<Route path="/" element={<PrivateRoutes />} >
<Route path="dashboard" element={<Dashboard />} />
<Route path="about" element={<About />} />
</Route>
<Route path="/login" element={<Login />} />
<Route path="*" element={<PageNotFound />} />
</Routes>
</BrowserRouter>
or
const routes = [
{
path: "/",
element: <PrivateRoutes />,
children: [
{
path: "dashboard",
element: <Dashboard />,
},
{
path: "about",
element: <About />
},
],
},
{
path: "/login",
element: <Login />,
},
{
path: "*",
element: <PageNotFound />
},
];
...
export default function Login() {
const location = useLocation();
const navigate = useNavigate();
const { authLogin, loginData } = useContext(globalC);
useEffect(() => {
if (authLogin) {
const { from } = location.state || { from: { pathname: "/" } };
navigate(from, { replace: true });
}
}, [authLogin, location, navigate]);
return (
<div
style={{ height: "100vh" }}
className="d-flex justify-content-center align-items-center"
>
<button type="button" onClick={loginData} className="btn btn-primary">
Login
</button>
</div>
);
}
1 React-Router-DOM v7 react-router
is the primary entry point, import components from react-router
instead of react-router-dom
. See v7 Installation for details.
react-router-dom
v5Create a PrivateRoute
component that consumes your auth context.
const PrivateRoute = (props) => {
const location = useLocation();
const { authLogin } = useContext(globalC);
if (authLogin === undefined) {
return null; // or loading indicator/spinner/etc
}
return authLogin ? (
<Route {...props} />
) : (
<Redirect
to={{
pathname: "/login",
state: { from: location }
}}
/>
);
};
Update your Login
component to handle redirecting back to the original route being accessed.
export default function Login() {
const location = useLocation();
const history = useHistory();
const { authLogin, loginData } = useContext(globalC);
useEffect(() => {
if (authLogin) {
const { from } = location.state || { from: { pathname: "/" } };
history.replace(from);
}
}, [authLogin, history, location]);
return (
<div
style={{ height: "100vh" }}
className="d-flex justify-content-center align-items-center"
>
<button type="button" onClick={loginData} className="btn btn-primary">
Login
</button>
</div>
);
}
Render all your routes in a "flat list"
function Routes() {
return (
<BrowserRouter>
<Switch>
<PrivateRoute path="/dashboard" component={Dashboard} />
<PrivateRoute path="/About" component={About} />
<Route path="/login" component={Login} />
<Route component={PageNotFound} />
</Switch>
</BrowserRouter>
);
}