Solid Router

A router lets you change your view based on the URL in the browser. This allows your "single-page" application to simulate a traditional multipage site. To use Solid Router, you specify components called Routes that depend on the value of the URL (the "path"), and the router handles the mechanism of swapping them in and out.

Solid Router is a universal router for SolidJS - it works whether you're rendering on the client or on the server. It was inspired by and combines paradigms of React Router and the Ember Router. Routes can be defined directly in your app's template using JSX, but you can also pass your route configuration directly as an object. It also supports nested routing, so navigation can change a part of a component, rather than completely replacing it.

It supports all of Solid's SSR methods and has Solid's transitions baked in, so use it freely with suspense, resources, and lazy components. Solid Router also allows you to define a data function that loads parallel to the routes (render-as-you-fetch).

Getting Started
- Set Up the Router
- Configure Your Routes
Create Links to Your Routes
Dynamic Routes
Data Functions
Nested Routes
Hash Mode Router
Config Based Routing
Router Primitives

Getting Started

Set Up the Router

> npm i @solidjs/router

Install @solidjs/router, then wrap your root component with the Router component:

import { render } from "solid-js/web";
import { Router } from "@solidjs/router";
import App from "./App";

render(
  () => (
    <Router>
      <App />
    </Router>
  ),
  document.getElementById("app")
);

This sets up a context so that we can display the routes anywhere in the app.

Configure Your Routes

Solid Router allows you to configure your routes using JSX:

Use the Routes component to specify where the routes should appear in your app.

import { Routes, Route } from "@solidjs/router"

export default function App() {
  return <>
    <h1>My Site with Lots of Pages</h1>
    <Routes>

    </Routes>
  </>
}

Add each route using the Route component, specifying a path and an element or component to render when the user navigates to that path.

import { Routes, Route } from "@solidjs/router"

import Home from "./pages/Home"
import Users from "./pages/Users"

export default function App() {
  return <>
    <h1>My Site with Lots of Pages</h1>
    <Routes>
      <Route path="/users" component={Users} />
      <Route path="/" component={Home} />
      <Route path="/about" element={<div>This site was made with Solid</div>} />
    </Routes>
  </>
}

Lazy-load route components

This way, the Users and Home components will only be loaded if you're navigating to /users or /home, respectively.

import { lazy } from "solid-js";
import { Routes, Route } from "@solidjs/router"
const Users = lazy(() => import("./pages/Users"));
const Home = lazy(() => import("./pages/Home"));

export default function App() {
  return <>
    <h1>My Site with Lots of Pages</h1>
    <Routes>
      <Route path="/users" component={Users} />
      <Route path="/" component={Home} />
      <Route path="/about" element={<div>This site was made with Solid</div>} />
    </Routes>
  </>
}

Create Links to Your Routes

Use the Link component to create an anchor tag that takes you to a route:

import { lazy } from "solid-js";
import { Routes, Route, Link } from "@solidjs/router"
const Users = lazy(() => import("./pages/Users"));
const Home = lazy(() => import("./pages/Home"));

export default function App() {
  return <>
    <h1>My Site with Lots of Pages</h1>
    <nav>
      <Link href="/about">About</Link>
      <Link href="/">Home</Link>
    </nav>
    <Routes>
      <Route path="/users" component={Users} />
      <Route path="/" component={Home} />
      <Route path="/about" element={<div>This site was made with Solid</div>} />
    </Routes>
  </>
}

If you use NavLink instead of Link, the anchor tag will have an active class if its href matches the current location, and inactive otherwise. Note: By default matching includes locations that are descendents (eg. href /users matches locations /users and /users/123), use the boolean end prop to prevent matching these. This is particularly useful for links to the root route / which would match everything.

Both of these components have these props:

prop	type	description
href	string	The path of the route to navigate to. This will be resolved relative to the route that the link is in, but you can preface it with `/` to refer back to the root.
noScroll	boolean	If true, turn off the default behavior of scrolling to the top of the new page
replace	boolean	If true, don't add a new entry to the browser history. (By default, the new page will be added to the browser history, so pressing the back button will take you to the previous route.)
state	unknown	Push this value to the history stack when navigating

NavLink additionally has:

prop	type	description
inactiveClass	string	The class to show when the link is inactive (when the current location doesn't match the link)
activeClass	string	The class to show when the link is active
end	boolean	If `true`, only considers the link to be active when the curent location matches the `href` exactly; if `false`, check if the current location starts with `href`

If you have a same-domain path that you want to link to without going through the router, set rel="external" on the link component.

The Navigate Component

Solid Router provides a Navigate component that works similarly to Link and NavLink, but it will immediately navigate to the provided path as soon as the component is rendered. It also uses the href prop, but you have the additional option of passing a function to href that returns a path to navigate to:

function getPath ({navigate, location}) {
  //navigate is the result of calling useNavigate(); location is the result of calling useLocation(). 
  //You can use those to dynamically determine a path to navigate to
  return "/some-path";
}

//Navigating to /redirect will redirect you to the result of getPath
<Route path="/redirect">
  <Navigate href={getPath}/>
</Route>

Dynamic Routes

If you don't know the path ahead of time, you might want to treat part of the path as a flexible parameter that is passed on to the component.

import { lazy } from "solid-js";
import { Routes, Route } from "@solidjs/router"
const Users = lazy(() => import("./pages/Users"));
const User = lazy(() => import("./pages/User"));
const Home = lazy(() => import("./pages/Home"));

export default function App() {
  return <>
    <h1>My Site with Lots of Pages<h1/>
    <Routes>
      <Route path="/users" component={Users} />
      <Route path="/users/:id" component={User} />
      <Route path="/" component={Home} />
      <Route path="/about" element={<div>This site was made with Solid</div>} />
    </Routes>
  </>
}

The colon indicates that id can be any string, and as long as the URL fits that pattern, the User component will show.

You can then access that id from within a route component with useParams:

//async fetching function
import { fetchUser } ...

export default function User () {

  const params = useParams();

  const [userData] = createResource(() => params.id, fetchUser);

  return <a href={userData.twitter}>{userData.name}</a>
}

Optional Parameters

Parameters can be specified as optional by adding a question mark to the end of the parameter name:

//Matches stories and stories/123 but not stories/123/comments
<Route path='/stories/:id?' element={<Stories/>} />

Wildcard Routes

:param lets you match an arbitrary name at that point in the path. You can use * to match any end of the path:

//Matches any path that begins with foo, including foo/, foo/a/, foo/a/b/c
<Route path='foo/*' component={Foo}/>

If you want to expose the wild part of the path to the component as a parameter, you can name it:

<Route path='foo/*any' element={<div>{useParams().any}</div>}/>

Note that the wildcard token must be the last part of the path; foo/*any/bar won't create any routes.

Multiple Paths

Routes also support defining multiple paths using an array. This allows a route to remain mounted and not rerender when switching between two or more locations that it matches:

//Navigating from login to register does not cause the Login component to re-render
<Route path={["login", "register"]} component={Login}/>

Data Functions

In the above example, the User component is lazy-loaded and then the data is fetched. With route data functions, we can instead start fetching the data parallel to loading the route, so we can use the data as soon as possible.

To do this, create a function that fetches and returns the data using createResource. Then pass that function to the data prop of the Route component.

import { lazy } from "solid-js";
import { Route } from "@solidjs/router";
import { fetchUser } ... 

const User = lazy(() => import("/pages/users/[id].js"));

//Data function
function UserData({params, location, navigate, data}) {
  const [user] = createResource(() => params.id, fetchUser);
  return user;
}

//Pass it in the route definition
<Route path="/users/:id" component={User} data={UserData} />;

When the route is loaded, the data function is called, and the result can be accessed by calling useRouteData() in the route component.

//pages/users/[id].js
import { useRouteData } from '@solidjs/router';
export default function User() {
  const user = useRouteData();
  return <h1>{user().name}</h1>;
}

As its only argument, the data function is passed an object that you can use to access route information:

key	type	description
params	object	The route parameters (same value as calling `useParams()` inside the route component)
location	`{ pathname, search, hash, query, state, key}`	An object that you can use to get more information about the path (corresponds to `useLocation()`)
navigate	`(to: string, options?: NavigateOptions) => void`	A function that you can call to navigate to a different route instead (corresponds to `useNavigate()`)
data	unknown	The data returned by the parent's data function, if any. (Data will pass through any intermediate nesting.)

A common pattern is to export the data function that corresponds to a route in a dedicated route.data.js file. This way, the data function can be imported without loading anything else.

import { lazy } from "solid-js";
import { Route } from "@solidjs/router";
import { fetchUser } ... 
import UserData from "./pages/users/[id].data.js";
const User = lazy(() => import("/pages/users/[id].js"));

// In the Route definition
<Route path="/users/:id" component={User} data={UserData} />;

Nested Routes

The following two route definitions have the same result:

<Route path="/users/:id" component={User} />

<Route path="/users">
  <Route path="/:id" component={User} />
</Route>

/users/:id renders the <User/> component, and /users/ is an empty route.

Only leaf Route nodes (innermost Route components) are given a route. If you want to make the parent its own route, you have to specify it separately:

//This won't work the way you'd expect
<Route path="/users" component={Users}>
  <Route path="/:id" component={User} />
</Route>

//This works
<Route path="/users" component={Users} />
<Route path="/users/:id" component={User} />

//This also works
<Route path="/users">
  <Route path="/" component={Users} />
  <Route path="/:id" component={User} />
</Route>

You can also take advantage of nesting by adding a parent element with an <Outlet/>.

import { Outlet } from "@solidjs/router";

function PageWrapper () {
  return <div>
    <h1> We love our users! </h1>
    <Outlet/>
    <Link href="/">Back Home</Link>
  </div>
}

<Route path="/users" component={PageWrapper}>
  <Route path="/" component={Users}/>
  <Route path="/:id" component={User} />
</Route>

The routes are still configured the same, but now the route elements will appear inside the parent element where the <Outlet/> was declared.

You can nest indefinitely - just remember that only leaf nodes will become their own routes. In this example, the only route created is /layer1/layer2, and it appears as three nested divs.

<Route path='/' element={<div>Onion starts here <Outlet /></div>}>
  <Route path='layer1' element={<div>Another layer <Outlet /></div>}>
    <Route path='layer2' element={<div>Innermost layer</div>}></Route>
  </Route>
</Route>

If you declare a data function on a parent and a child, the result of the parent's data function will be passed to the child's data function as the data property of the argument, as described in the last section. This works even if it isn't a direct child, because by default every route forwards its parent's data.

Hash Mode Router

By default, Solid Router uses location.pathname as route path. You can simply switch to hash mode through the source property on <Router> component.

import { Router, hashIntegration } from '@solidjs/router'

<Router source={hashIntegration()}><App></Router>

Config Based Routing

You don't have to use JSX to set up your routes; you can pass an object directly with useRoutes:

import { lazy } from "solid-js";
import { render } from "solid-js/web";
import { Router, useRoutes, Link } from "@solidjs/router";

const routes = [
  {
    path: "/users",
    component: lazy(() => import("/pages/users.js"))
  },
  {
    path: "/users/:id",
    component: lazy(() => import("/pages/users/[id].js")),
    children: [
      { path: "/", component: lazy(() => import("/pages/users/[id]/index.js")) },
      { path: "/settings", component: lazy(() => import("/pages/users/[id]/settings.js")) },
      { path: "/*all", component: lazy(() => import("/pages/users/[id]/[...all].js")) }
    ]
  },
  {
    path: "/",
    component: lazy(() => import("/pages/index.js"))
  },
  {
    path: "/*all",
    component: lazy(() => import("/pages/[...all].js"))
  }
];

function App() {
  const Routes = useRoutes(routes);
  return (
    <>
      <h1>Awesome Site</h1>
      <Link class="nav" href="/">
        Home
      </Link>
      <Link class="nav" href="/users">
        Users
      </Link>
      <Routes />
    </>
  );
}

render(
  () => (
    <Router>
      <App />
    </Router>
  ),
  document.getElementById("app")
);

Router Primitives

Solid Router provides a number of primitives that read off the Router and Route context.

useParams

Retrieves a reactive, store-like object containing the current route path parameters as defined in the Route.

const params = useParams();

// fetch user based on the id path parameter
const [user] = createResource(() => params.id, fetchUser);

useNavigate

Retrieves method to do navigation. The method accepts a path to navigate to and an optional object with the following options:

resolve (boolean, default true): resolve the path against the current route
replace (boolean, default false): replace the history entry
scroll (boolean, default true): scroll to top after navigation
state (any, default undefined): pass custom state to location.state

Note: The state is serialized using the structured clone algorithm which does not support all object types.

const navigate = useNavigate();

if (unauthorized) {
  navigate("/login", { replace: true });
}

useLocation

Retrieves reactive location object useful for getting things like pathname

const location = useLocation();

const pathname = createMemo(() => parsePath(location.pathname));

useSearchParams

Retrieves a tuple containing a reactive object to read the current location's query parameters and a method to update them. The object is a proxy so you must access properties to subscribe to reactive updates. Note values will be strings and property names will retain their casing.

The setter method accepts an object whose entries will be merged into the current query string. Values '', undefined and null will remove the key from the resulting query string. Updates will behave just like a navigation and the setter accepts the same optional second parameter as navigate and auto-scrolling is disabled by default.

const [searchParams, setSearchParams] = useSearchParams();

return (
  <div>
    <span>Page: {searchParams.page}</span>
    <button onClick={() => setSearchParams({ page: searchParams.page + 1 })}>Next Page</button>
  </div>
);

useIsRouting

Retrieves signal that indicates whether the route is currently in a Transition. Useful for showing stale/pending state when the route resolution is Suspended during concurrent rendering.

const isRouting = useIsRouting();

return (
  <div classList={{ "grey-out": isRouting() }}>
    <MyAwesomeConent />
  </div>
);

useRouteData

Retrieves the return value from the data function.

In previous versions you could use numbers to access parent data. This is no longer supported. Instead the data functions themselves receive the parent data that you can expose through the specific nested routes data.

const user = useRouteData();

return <h1>{user().name}</h1>;

useMatch

useMatch takes an accessor that returns the path and creates a Memo that returns match information if the current path matches the provided path. Useful for determining if a given path matches the current route.

const match = useMatch(() => props.href);

return <div classList={{ active: Boolean(match()) }} />;

useRoutes

Used to define routes via a config object instead of JSX. See Config Based Routing.

Name		Name	Last commit message	Last commit date
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README.md		README.md
babel.config.cjs		babel.config.cjs
package-lock.json		package-lock.json
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tsconfig.test.json		tsconfig.test.json

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Solid Router

Getting Started

Set Up the Router

Configure Your Routes

Create Links to Your Routes

The Navigate Component

Dynamic Routes

Optional Parameters

Wildcard Routes

Multiple Paths

Data Functions

Nested Routes

Hash Mode Router

Config Based Routing

Router Primitives

useParams

useNavigate

useLocation

useSearchParams

useIsRouting

useRouteData

useMatch

useRoutes

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Solid Router

Getting Started

Set Up the Router

Configure Your Routes

Create Links to Your Routes

The Navigate Component

Dynamic Routes

Optional Parameters

Wildcard Routes

Multiple Paths

Data Functions

Nested Routes

Hash Mode Router

Config Based Routing

Router Primitives

useParams

useNavigate

useLocation

useSearchParams

useIsRouting

useRouteData

useMatch

useRoutes

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