Conditional rendering with React Router - react-router

I'd like to render some routes with a nav at the top, while rendering other routes (like a sign-up / sign-in page) without any nav.
For the setup with the nav, I have:
const App = () => (
<Router>
<div>
<Nav />
<div>
<Route exact path="/" component={Home} />
<Route path="/account" component={Account} />
<Route path="/news" component={News} />
</div>
<Footer />
</div>
</Router>
);
I'm trying to find the best way of handling this with React Router (seems like it would have to handled with some type of conditional maybe? - "if my current route matches any one of these routes, then render like so else render this.").
Thanks!

You have at least two possibilities:
Use Route "path" property to test the route and render the component. Path property accepts path.to.regexp expressions.
Wrap your component with withRouter method and inside Nav test if the route matches and render null otherwise.
First answer:
const App = () => (
<Router>
<div>
<Route path="/(?!signin|signup)" component={Nav}/>
<div>
<Route exact path="/" component={Home} />
<Route path="/account" component={Account} />
<Route path="/news" component={News} />
</div>
<Footer />
</div>
</Router>
);
Second answer:
import { withRouter } from 'react-router'
const NavWithRouter = withRouter(Nav);
const App = () => (
<Router>
<div>
<NavWithRouter/>
<div>
<Route exact path="/" component={Home} />
<Route path="/account" component={Account} />
<Route path="/news" component={News} />
</div>
<Footer />
</div>
</Router>
);

<Route
path={`foo/(A|B|C)`}
component={() => (<Baz {...props}/>)}
/>
Where A,B,C are the different routes like foo/A.

I usually use two different Layout pages. And within the Layout pages, have a router for the content.
My code will look like this:
<Router>
<Route path="/login" component={AuthLayout} />
<Route path="/logout" component={AuthLayout} />
<Route path="/some/path" component={Layout} />
</Router>
Within each Layout, there will be the usual header / footer / navbars and then another set of routes.
<div className="auth-layout">
<header className="auth-layout__header"></header>
<main className="auth-layout__content">
<Switch>
<Route path="/login" component={Login} />
<Route path="/logout" component={Logout} />
</Switch>
</main>
</div>
In this way, I have a direct mapping from requirements to code. In my code, there are much more differences between the two layouts.

Just use a prop for this & inside the children your are able to conditional render the nav.
<Route exact path="/" render={() => <Home hasNav={false} />}

Related

Render same component for 3 routes

I want my react router to return component only when URL matches either of those 3 paths exactly and return an error when it doesn't. How can I shorten this?
return (
<BrowserRouter>
<Routes>
<Route path="/" element={<Table entries={posts} />} />
<Route path="/evens" element={<Table entries={posts} />} />
<Route path="/odds" element={<Table entries={posts} />} />
<Route ??? element={<ErrorPage />} />
</Routes>
</BrowserRouter>
);
RRDv6 routes take only a string path prop. If you need to render the same component on multiple paths you need to render a Route for each.
To make the code a little more DRY you could try mapping the routes from an array of paths.
Example:
return (
<BrowserRouter>
<Routes>
{["/", "/evens", "/odds"].map(path => (
<Route
key={path}
path={path}
element={<Table entries={posts} />}
/>
)}
<Route path="*" element={<ErrorPage />} />
</Routes>
</BrowserRouter>
);
Now whether or not this is more readable or maintainable is likely up for debate/opinion. It is less repetitive though.

react-router-dom switch not rendering components after dynamic path

I`ve been following an e-commerce tutorial and building on top of it. Im new to React and React Router Dom.
I've set a dynamic path for individual product pages, and now i' trying to add some new paths i.e. contact, about, etc.. If I add the new paths above the dynamic path they are rendered properly, but if I place the routes under the one with the dynamic path, for example the /hello, they won't render. Is this normal behaviour??
<Router>
<div>
<Navbar totalItems={cart.total_items} />
<Switch>
<Route exact path="/">
<Home products={products} handleAddToCart={handleAddToCart} fetchProduct={fetchProduct} />
</Route>
<Route exact path="/checkout">
<Checkout cart={cart} order={order} handleCaptureCheckout={handleCaptureCheckout} error={errorMessage} refreshCart={refreshCart} />
</Route>
<Route exact path="/cart">
<Cart
cart={cart}
handleUpdateCartQuantity={handleUpdateCartQuantity}
handleRemoveFromCart={handleRemoveFromCart}
handleEmptyCart={handleEmptyCart}
/>
</Route>
<Route exact path="/contact">
<Contact />
</Route>
<Route exact path="/:id">
<Details product={product} handleAddToCart={handleAddToCart} />
</Route>
<Route exact path="/hello">
<h1>Hello World</h1>
</Route>
</Switch>
</div>
<Router>
Yes, this behavior is completely normal, and expected. Recall that the Switch component "Renders the first child <Route> or <Redirect> that matches the location." This means that in the Switch component path order and specificity matter!
A path "/hello" is more specific than "/:id", so depending on route order may or may not be matched first. Or in other words, "/hello" can always be matched to "/:id", but not always the other way around.
You should always order the routes from more specific paths to less specific paths, and if done correctly there should be a near zero need for the exact prop.
"/hello" is more specific than "/:id" which is more specific than "/".
<Switch>
<Route path="/checkout">
<Checkout ... />
</Route>
<Route path="/cart">
<Cart ... />
</Route>
<Route path="/contact">
<Contact />
</Route>
<Route path="/hello">
<h1>Hello World</h1>
</Route>
<Route path="/:id">
<Details ... />
</Route>
<Route path="/">
<Home ... />
</Route>
</Switch>
If you had a nested "/contact/add" route for example, this is more specific than "/contact" and should be listed higher/before in the Switch.
Try removing the exact from the Route.
<Route exact path="/:id">
to:
<Route path="/:id">

React Router 4 not rendering 404 on routes not found

I'm working on a React app that is using React Router 4. All of my routes are working great, however, if I go to a route that is not on the list I am not getting my 404 page. Any idea what I'm missing?
I'm using React 16 and React Router 4. This is for a sample app like Indeed.
export default function App() {
const companyRoutes = () => (
<Main>
<Route exact path="/companies/new" component={NewCompanyPage} />
<SubNav>
<PageBody companyPages>
<Switch>
<Route exact path="/companies" component={CompanyPage} />
<Route path="/companies/:companyId/edit" component={EditCompanyPage} />
<Route path="/companies/:companyId/jobs/:jobId/edit" component={EditJobPage} />
<Route path="/companies/:companyId/jobs/new" component={NewJobPage} />
<Route path="/companies/:companyId/jobs" component={CompanyJobsPage} />
<Route path="/companies/:companyId/locations" component={CompanyLocationsPage} />
<Route path="/companies/:companyId/recruiters" component={CompanyRecruitersPage} />
<Route path="/companies/:companyId/settings" component={CompanySettingsPage} />
<Route path="/companies/:companyId/applicants" component={CompanyApplicantsPage} />
</Switch>
</PageBody>
</SubNav>
</Main>
)
const jobRoutes = () => (
<Main>
<PageBody>
<Switch>
<Route exact path="/jobs" component={JobsPage} />
<Route path="/jobs/:jobId" component={JobPage} />
<Route path="/jobs/:jobId/apply" component={NewApplicationPage} />
</Switch>
</PageBody>
</Main>
)
const profileRoutes = () => (
<Main>
<SubNav>
<PageBody>
<Switch>
<Route exact path="/profiles" component={ProfilePage} />
<Route path="/profiles/:profileId/resume" component={ResumePage} />
<Route path="/profiles/:profileId/edit" component={EditProfilePage} />
<Route path="/profiles/:profileId/applications" component={ApplicationsPage} />
<Route path="/profiles/:profileId/settings" component={ProfileSettingsPage} />
</Switch>
</PageBody>
</SubNav>
</Main>
)
const loginRoutes = () => (
<LoginMain>
<Switch>
<Route exact path="/login" component={LoginPage} />
<Route exact path="/sign_up" component={LoginPage} />
</Switch>
</LoginMain>
)
const MainRoutes = () => (
<div>
<Route path="/companies" component={companyRoutes} />
<Route path="/jobs" component={jobRoutes} />
<Route path="/login" component={loginRoutes} />
<Route path="/profiles" component={profileRoutes} />
</div>
)
return (
<BrowserRouter>
<div>
<Route path="/" component={MainRoutes} />
<Route path="/404" component={NotFoundPage} />
</div>
</BrowserRouter>
)
}
[UPDATE]: Here you will find a proper, better tested example.
Not tested but try:
return (
<BrowserRouter>
<Switch>
<Route path="/" component={MainRoutes} />
<Route component={NotFoundPage} />
</Switch>
</BrowserRouter>
)
The idea is that inside a Switch, the router will try every route from the first one to the last one until it finds a corresponding path.
By having <Route component={NotFoundPage} /> at the very bottom of your routing, with no path specified, it will act as a wildcard, catching all unmatched urls.

Keep redux store values after redirecting to another page

When a user clicks a link it will guide the user to a checkout page.
selectSlot(slot){
window.location = `/checkout/${slot.target.value}`
}
My approach won't keep the redux store values.
How can I keep those values?
Here are the router definitions
<Provider store={store}>
<ConnectedRouter history={history}>
<Router>
<Switch>
<Route exact path="/" component={MainLayout} />
<Route exact path="/index.html" component={MainLayout} />
<Route path="/checkout" component={CheckoutLayout} />
<Route component={NotFound}/>
</Switch>
</Router>
</ConnectedRouter>
</Provider>
I am using Link from react-router-dom for the purpose and works for me. You can read about it here

Nested Routes in React Router v4

I'm trying to set up some nested routes to add a common layout. Check the code out:
<Router>
<Route component={Layout}>
<div>
<Route path='/abc' component={ABC} />
<Route path='/xyz' component={XYZ} />
</div>
</Route>
</Router>
While this works perfectly fine, I still get the warning:
Warning: You should not use <Route component> and <Route children> in the same
route; will be ignored
CESCO's answer renders first the component AppShell then one of the components inside Switch. But these components are NOT going to render inside AppShell, they will NOT be children of AppShell.
In v4 to wrap components you don't put anymore your Routes inside another Route, you put your Routes directly inside a component.
I.E : for the wrapper instead of <Route component={Layout}> you directly use <Layout>.
Full code :
<Router>
<Layout>
<Route path='/abc' component={ABC} />
<Route path='/xyz' component={XYZ} />
</Layout>
</Router>
The change is probably explained by the idea to make React Router v4 to be pure
React so you only use React elements like with any other React element.
EDIT : I removed the Switch component as it's not useful here. See when it's useful here.
You need to use the switch component to nesting to work nice. Also, see this question
// main app
<div>
// not setting a path prop, makes this always render
<Route component={AppShell}/>
<Switch>
<Route exact path="/" component={Login}/>
<Route path="/dashboard" component={AsyncDashboard(userAgent)}/>
<Route component={NoMatch}/>
</Switch>
</div>
And version-4 components do not take children, instead, you should use the render prop.
<Router>
<Route render={(props)=>{
return <div>Whatever</div>}>
</Route>
</Router>
Try:
<Router>
<Layout>
<Route path='/abc' component={ABC} />
<Route path='/xyz' component={XYZ} />
</Layout>
</Router>
If you do not want Layout to run at loaded. Use this method:
<div className="container">
<Route path="/main" component={ChatList}/>
<Switch>
<Route exact path="/" component={Start} />
<Route path="/main/single" component={SingleChat} />
<Route path="/main/group" component={GroupChat} />
<Route path="/login" component={Login} />
</Switch>
</div>
Whenever history changes, componentWillReceiveProps in the ChatList will run.
You can also try this :
<Route exact path="/Home"
render={props=>(
<div>
<Layout/>
<Archive/>
</div>
)}
/>