<Admin>

The <Admin> component is the root component of a react-admin app. It allows to configure the application adapters and UI.

<Admin> creates a series of context providers to allow its children to access the app configuration. It renders the main routes and layout. It delegates the rendering of the content area to its <Resource> children.

Admin Component

Usage

<Admin> requires only a dataProvider prop, and at least one child <Resource> to work. Here is the most basic example:

// in src/App.js
import { Admin, Resource } from 'react-admin';
import simpleRestProvider from 'ra-data-simple-rest';

import { PostList } from './posts';

const App = () => (
    <Admin dataProvider={simpleRestProvider('http://path.to.my.api')}>
        <Resource name="posts" list={PostList} />
    </Admin>
);

export default App;

<Admin> children can be <Resource> and <CustomRoutes> elements.

In most apps, you need to pass more props to <Admin>. Here is a more complete example taken from the e-commerce demo:

// in src/App.js
import { Admin, Resource, CustomRoutes } from 'react-admin';
import { Route } from "react-router-dom";

import { dataProvider, authProvider, i18nProvider } from './providers';
import { Layout } from './layout';
import { Dashboard } from './dashboard';
import { Login } from './login';
import { lightTheme, darkTheme } from './themes';
import { CustomerList, CustomerEdit } from './customers';
import { OrderList, OrderEdit } from './orders';
import { InvoiceList, InvoiceEdit } from './invoices';
import { ProductList, ProductEdit, ProductCreate } from './products';
import { CategoryList, CategoryEdit, CategoryCreate } from './categories';
import { ReviewList } from './reviews';
import { Segments } from './segments';

const App = () => (
    <Admin
        dataProvider={dataProvider}
        authProvider={authProvider}
        i18nProvider={i18nProvider}
        layout={Layout}
        dashboard={Dashboard}
        loginPage={Login}
        theme={lightTheme}
        darkTheme={darkTheme}
        defaultTheme="light"
    >
        <Resource name="customers" list={CustomerList} edit={CustomerEdit} />
        <Resource name="orders" list={OrderList} edit={OrderEdit} options={{ label: 'Orders' }} />
        <Resource name="invoices" list={InvoiceList} edit={InvoiceEdit} />
        <Resource name="products" list={ProductList} edit={ProductEdit} create={ProductCreate} />
        <Resource name="categories" list={CategoryList} edit={CategoryEdit} create={CategoryCreate} />
        <Resource name="reviews" list={ReviewList} />
        <CustomRoutes>
            <Route path="/segments" element={<Segments />} />
        </CustomRoutes>
    </Admin>
);

To make the main app component more concise, a good practice is to move the resources props to separate files. For instance, the previous example can be rewritten as:

// in src/App.js
import { Admin, Resource, CustomRoutes } from 'react-admin';
import { Route } from "react-router-dom";

import { dataProvider, authProvider, i18nProvider } from './providers';
import { Layout } from './layout';
import { Dashboard } from './dashboard';
import { Login } from './login';
import { lightTheme, darkTheme } from './themes';
import customers from './customers';
import orders from './orders';
import invoices from './invoices';
import products from './products';
import categories from './categories';
import reviews from './reviews';
import { Segments } from './segments';


const App = () => (
    <Admin 
        dataProvider={dataProvider}
        authProvider={authProvider}
        i18nProvider={i18nProvider}
        dashboard={Dashboard}
        loginPage={Login}
        layout={Layout}
        theme={lightTheme}
        darkTheme={darkTheme}
        defaultTheme="light"
    >
        <Resource {...customers} />
        <Resource {...orders} />
        <Resource {...invoices} />
        <Resource {...products} />
        <Resource {...categories} />
        <Resource {...reviews} />
        <CustomRoutes>
            <Route path="/segments" element={<Segments />} />
        </CustomRoutes>
    </Admin>
);

Props

Three main props lets you configure the core features of the <Admin> component:

Here are all the props accepted by the component:

Prop Required Type Default Description
dataProvider Required DataProvider - The data provider for fetching resources
children Required ReactNode - The routes to render
authCallbackPage Optional Component AuthCallback The content of the authentication callback page
authProvider Optional AuthProvider - The authentication provider for security and permissions
basename Optional string - The base path for all URLs
catchAll Optional Component NotFound The fallback component for unknown routes
dashboard Optional Component - The content of the dashboard page
darkTheme Optional object - The dark theme configuration
defaultTheme Optional boolean false Flag to default to the light theme
disableTelemetry Optional boolean false Set to true to disable telemetry collection
i18nProvider Optional I18NProvider - The internationalization provider for translations
layout Optional Component Layout The content of the layout
loginPage Optional Component LoginPage The content of the login page
notification Optional Component Notification The notification component
queryClient Optional QueryClient - The react-query client
ready Optional Component Ready The content of the ready page
requireAuth Optional boolean false Flag to require authentication for all routes
store Optional Store - The Store for managing user preferences
theme Optional object - The main (light) theme configuration
title Optional string - The error page title

dataProvider

dataProvider is the only required prop. It must be an object allowing to communicate with the API. React-admin uses the data provider everywhere it needs to fetch or save data.

In many cases, you won’t have to write a data provider, as one of the 50+ existing data providers will probably fit your needs. For instance, if your API is REST-based, you can use the Simple REST Data Provider as follows:

// in src/App.js
import simpleRestProvider from 'ra-data-simple-rest';
import { Admin, Resource } from 'react-admin';

import { PostList } from './posts';

const dataProvider = simpleRestProvider('http://path.to.my.api/');

const App = () => (
    <Admin dataProvider={dataProvider}>
        <Resource name="posts" list={PostList} />
    </Admin>
);

If you need to write your own, the data provider must have the following methods, all returning a promise:

const dataProvider = {
    getList:    (resource, params) => Promise,
    getOne:     (resource, params) => Promise,
    getMany:    (resource, params) => Promise,
    getManyReference: (resource, params) => Promise,
    create:     (resource, params) => Promise,
    update:     (resource, params) => Promise,
    updateMany: (resource, params) => Promise,
    delete:     (resource, params) => Promise,
    deleteMany: (resource, params) => Promise,
}

Check the Writing a Data Provider chapter for detailed instructions on how to write a data provider for your API.

The dataProvider is also the ideal place to add custom HTTP headers, handle file uploads, map resource names to API endpoints, pass credentials to the API, put business logic, reformat API errors, etc. Check the Data Provider documentation for more details.

children

The <Admin> component expects to receive <Resource> and <CustomRoutes> elements as children. They define the routes of the application.

For instance:

const App = () => (
    <Admin dataProvider={dataProvider} dashboard={Dashboard}>
        <Resource name="customers" list={CustomerList} edit={CustomerEdit} />
        <Resource name="orders" list={OrderList} edit={OrderEdit} options={{ label: 'Orders' }} />
        <Resource name="invoices" list={InvoiceList} />
        <Resource name="products" list={ProductList} edit={ProductEdit} create={ProductCreate} />
        <Resource name="categories" list={CategoryList} edit={CategoryEdit} create={CategoryCreate} />
        <Resource name="reviews" list={ReviewList} />
        <CustomRoutes>
            <Route path="/segments" element={<Segments />} />
        </CustomRoutes>
    </Admin>
);

With these children, the <Admin> component will generate the following routes:

  • /: the dashboard
  • /customers: the customer list
  • /customers/:id: the customer edit page
  • /orders: the order list
  • /orders/:id: the order edit page
  • /invoices: the invoice list
  • /products: the product list
  • /products/create: the product creation page
  • /products/:id: the product edit page
  • /categories: the category list
  • /categories/create: the category creation page
  • /categories/:id: the category edit page
  • /reviews: the review list
  • /segments: the segments page

authCallbackPage

React-admin apps contain a special route called /auth-callback to let external authentication providers (like Auth0, Cognito, OIDC servers) redirect users after login. This route renders the AuthCallback component by default, which in turn calls authProvider.handleCallback().

If you need a different behavior for this route, you can render a custom component by passing it as the authCallbackPage prop.

import MyAuthCallbackPage from './MyAuthCallbackPage';

const App = () => (
    <Admin authCallbackPage={MyAuthCallbackPage}>
        ...
    </Admin>
);

Note: You should seldom use this option, even when using an external authentication provider. Since you can already define the /auth-callback route controller via authProvider.handleCallback(), the authCallbackPage prop is only useful when you need the user’s feedback after they logged in.

You can also disable the /auth-callback route altogether by passing authCallbackPage={false}.

See The Authentication documentation for more details.

authProvider

The authProvider is responsible for managing authentication and permissions, usually based on an authentication backend. React-admin uses it to check for authentication status, redirect to the login page when the user is not authenticated, check for permissions, display the user identity, and more.

If you use a standard authentication strategy, you can use one of the existing auth providers. For instance, to use Auth0, you can use ra-auth-auth0:

// in src/App.tsx
import React, { useEffect, useRef, useState } from 'react';
import { Admin, Resource } from 'react-admin';
import { Auth0AuthProvider } from 'ra-auth-auth0';
import { Auth0Client } from '@auth0/auth0-spa-js';
import dataProvider from './dataProvider';
import posts from './posts';

const auth0 = new Auth0Client({
    domain: import.meta.env.VITE_AUTH0_DOMAIN,
    clientId: import.meta.env.VITE_AUTH0_CLIENT_ID,
    cacheLocation: 'localstorage',
    authorizationParams: {
        audience: import.meta.env.VITE_AUTH0_AUDIENCE,
    },
});

const authProvider = Auth0AuthProvider(auth0, {
    loginRedirectUri: import.meta.env.VITE_LOGIN_REDIRECT_URL,
    logoutRedirectUri: import.meta.env.VITE_LOGOUT_REDIRECT_URL,
});

const App = () => {
    return (
        <Admin
            authProvider={authProvider}
            dataProvider={dataProvider}
        >
            <Resource name="posts" {...posts} />
        </Admin>
    );
};
export default App;

If your authentication backend isn’t supported, you’ll have to write your own authProvider. It’s an object with 6 methods, each returning a Promise:

const authProvider = {
    login: params => Promise.resolve(),
    logout: params => Promise.resolve(),
    checkAuth: params => Promise.resolve(),
    checkError: error => Promise.resolve(),
    getIdentity: params => Promise.resolve(),
    getPermissions: params => Promise.resolve(),
};

const App = () => (
    <Admin authProvider={authProvider} dataProvider={simpleRestProvider('http://path.to.my.api')}>
        ...
    </Admin>
);

The Auth Provider also lets you configure redirections after login/logout, anonymous access, refresh tokens, roles and user groups. The Auth Provider documentation explains how to implement these functions in detail.

basename

Use this prop to make all routes and links in your Admin relative to a “base” portion of the URL pathname that they all share. This is required when using the BrowserHistory to serve the application under a sub-path of your domain (for example https://marmelab.com/ra-enterprise-demo), or when embedding react-admin inside a single-page app with its own routing.

import { Admin } from 'react-admin';
import { createBrowserHistory } from 'history';

const history = createBrowserHistory();
const App = () => (
    <Admin basename="/admin" history={history}>
        ...
    </Admin>
);

See Using React-Admin In A Sub Path for more usage examples.

catchAll

When users type URLs that don’t match any of the children <Resource> components, they see a default “Not Found” page.

Not Found

You can customize this page to use the component of your choice by passing it as the catchAll prop. To fit in the general design, use Material UI’s <Card> component, and react-admin’s <Title> component:

// in src/NotFound.js
import * as React from "react";
import Card from '@mui/material/Card';
import CardContent from '@mui/material/CardContent';
import { Title } from 'react-admin';

export default () => (
    <Card>
        <Title title="Not Found" />
        <CardContent>
            <h1>404: Page not found</h1>
        </CardContent>
    </Card>
);
// in src/App.js
import * as React from "react";
import { Admin } from 'react-admin';
import simpleRestProvider from 'ra-data-simple-rest';

import NotFound from './NotFound';

const App = () => (
    <Admin catchAll={NotFound} dataProvider={simpleRestProvider('http://path.to.my.api')}>
        // ...
    </Admin>
);

Tip: If your custom catchAll component contains react-router <Route> components, this allows you to register new routes displayed within the react-admin layout easily. Note that these routes will match after all the react-admin resource routes have been tested. To add custom routes before the react-admin ones, and therefore override the default resource routes, see the custom pages section instead.

dashboard

By default, the homepage of an admin app is the list of the first child <Resource>. But you can also specify a custom component instead. To fit in the general design, use Material UI’s <Card> component, and react-admin’s <Title> component to set the title in the AppBar:

// in src/Dashboard.js
import * as React from "react";
import Card from '@mui/material/Card';
import CardContent from '@mui/material/CardContent';
import { Title } from 'react-admin';
export default () => (
    <Card>
        <Title title="Welcome to the administration" />
        <CardContent>Lorem ipsum sic dolor amet...</CardContent>
    </Card>
);
// in src/App.js
import * as React from "react";
import { Admin } from 'react-admin';
import simpleRestProvider from 'ra-data-simple-rest';

import Dashboard from './Dashboard';

const App = () => (
    <Admin dashboard={Dashboard} dataProvider={simpleRestProvider('http://path.to.my.api')}>
        // ...
    </Admin>
);

Custom home page

darkTheme

If you want to support both light and dark mode, you can provide a darkTheme in addition to the theme prop. The app will use the darkTheme by default for users who prefer the dark mode at the OS level, and users will be able to switch from light to dark mode using a new app bar button leveraging the <ToggleThemeButton> component.

import { Admin } from 'react-admin';
import { darkTheme, lightTheme } from './themes';

const App = () => (
    <Admin
        dataProvider={dataProvider}
        theme={lightTheme}
        darkTheme={darkTheme}
    >
        ...
    </Admin>
);

Tip: To disable OS preference detection and always use one theme by default, see the defaultTheme prop.

defaultTheme

If you provide both a lightTheme and a darkTheme, react-admin will choose the default theme to use for each user based on their OS preference. This means that users using dark mode will see the dark theme by default. Users can then switch to the other theme using the <ToggleThemeButton> component.

If you prefer to always default to the light or the dark theme regardless of the user’s OS preference, you can set the defaultTheme prop to either light or dark:

import { Admin } from 'react-admin';

const App = () => (
    <Admin
        dataProvider={dataProvider}
        theme={lightTheme}
        darkTheme={darkTheme}
        defaultTheme="light"
    >
        ...
    </Admin>
);

disableTelemetry

In production, react-admin applications send an anonymous request on mount to a telemetry server operated by marmelab. You can see this request by looking at the Network tab of your browser DevTools:

https://react-admin-telemetry.marmelab.com/react-admin-telemetry

The only data sent to the telemetry server is the admin domain (e.g. “example.com”) - no personal data is ever sent, and no cookie is included in the response. The react-admin team uses these domains to track the usage of the framework.

You can opt out of telemetry by simply adding disableTelemetry to the <Admin> component:

// in src/App.js
import * as React from "react";
import { Admin } from 'react-admin';

const App = () => (
    <Admin disableTelemetry>
        // ...
    </Admin>
);

i18nProvider

The i18nProvider props let you translate the GUI. For instance, to switch the UI to French instead of the default English:

// in src/i18nProvider.js
import polyglotI18nProvider from 'ra-i18n-polyglot';
import fr from 'ra-language-french';

export const i18nProvider = polyglotI18nProvider(() => fr, 'fr');

// in src/App.js
import { i18nProvider } from './i18nProvider';

const App = () => (
    <Admin 
        dataProvider={dataProvider}
        i18nProvider={i18nProvider}
    >
        {/* ... */}
    </Admin>
);

The Translation Documentation details this process.

layout

If you want to deeply customize the app header, the menu, or the notifications, the best way is to provide a custom layout component. It must contain a {children} placeholder, where react-admin will render the resources.

React-admin offers predefined layouts for you to use:

  • <Layout>: The default layout. It renders a top app bar and the navigation menu in a side bar.
  • <ContainerLayout>: A centered layout with horizontal navigation.
import { Admin } from 'react-admin';
import { ContainerLayout } from '@react-admin/ra-navigation';

export const App = () => (
    <Admin dataProvider={dataProvider} layout={ContainerLayout}>
        // ...
    </Admin>
);

These layouts can be customized by passing props to them. For instance, you can pass a custom appBar prop to <Layout> to override the default app bar:

// in src/MyLayout.js
import { Layout } from 'react-admin';
import MyAppBar from './MyAppBar';

export const MyLayout = (props) => <Layout {...props} appBar={MyAppBar} />;

Then, pass it to the <Admin> component as the layout prop:

// in src/App.js
import { Admin } from 'react-admin';
import { MyLayout } from './MyLayout';

const App = () => (
    <Admin dataProvider={dataProvider} layout={MyLayout}>
        // ...
    </Admin>
);

Refer to each component documentation to understand the props it accepts.

Finally, you can also pass a custom component as the layout prop. It must contain a {children} placeholder, where react-admin will render the content. Use the default <Layout> as a starting point, and check the Theming documentation for examples.

loginPage

If you want to customize the Login page, or switch to another authentication strategy than a username/password form, pass a component of your own as the loginPage prop. React-admin will display this component whenever the /login route is called.

import MyLoginPage from './MyLoginPage';

const App = () => (
    <Admin loginPage={MyLoginPage}>
        ...
    </Admin>
);

You can also disable it completely along with the /login route by passing false to this prop.

See The Authentication documentation for more details.

Tip: Before considering writing your own login page component, please take a look at how to change the default background image or the Material UI theme. See the Authentication documentation for more details.

notification

You can override the notification component, for instance to change the notification duration. A common use case is to change the autoHideDuration, and force the notification to remain on screen longer than the default 4 seconds. For instance, to create a custom Notification component with a 5 seconds default:

// in src/MyNotification.js
import { Notification } from 'react-admin';

const MyNotification = () => <Notification autoHideDuration={5000} />;

export default MyNotification;

To use this custom notification component, pass it to the <Admin> component as the notification prop:

// in src/App.js
import MyNotification from './MyNotification';
import dataProvider from './dataProvider';

const App = () => (
    <Admin notification={MyNotification} dataProvider={dataProvider}>
        // ...
    </Admin>
);

queryClient

React-admin uses react-query to fetch, cache and update data. Internally, the <Admin> component creates a react-query QueryClient on mount, using react-query’s “aggressive but sane” defaults:

  • Queries consider cached data as stale
  • Stale queries are refetched automatically in the background when:
    • New instances of the query mount
    • The window is refocused
    • The network is reconnected
    • The query is optionally configured with a refetch interval
  • Query results that are no longer used in the current page are labeled as “inactive” and remain in the cache in case they are used again at a later time.
  • By default, “inactive” queries are garbage collected after 5 minutes.
  • Queries that fail are silently retried 3 times, with exponential backoff delay before capturing and displaying an error to the UI.
  • Query results by default are structurally shared to detect if data has actually changed and if not, the data reference remains unchanged to better help with value stabilization with regards to useMemo and useCallback.

If you want to override the react-query default query and mutation default options, or use a specific client or mutation cache, you can create your own QueryClient instance and pass it to the <Admin queryClient> prop:

import { Admin } from 'react-admin';
import { QueryClient } from 'react-query';

const queryClient = new QueryClient({
    defaultOptions: {
        queries: {
            retry: false,
            structuralSharing: false,
        },
        mutations: {
            retryDelay: 10000,
        },
    },
});

const App = () => (
    <Admin queryClient={queryClient} dataProvider={...}>
        ...
    </Admin>
);

To know which options you can pass to the QueryClient constructor, check the react-query documentation and the query options and mutation options sections.

The common settings that react-admin developers often overwrite are:

import { QueryClient } from 'react-query';

const queryClient = new QueryClient({
    defaultOptions: {
        queries: {
            /**
             * The time in milliseconds after data is considered stale.
             * If set to `Infinity`, the data will never be considered stale.
             */
            staleTime: 10000,
            /**
             * If `false`, failed queries will not retry by default.
             * If `true`, failed queries will retry infinitely., failureCount: num
             * If set to an integer number, e.g. 3, failed queries will retry until the failed query count meets that number.
             * If set to a function `(failureCount, error) => boolean` failed queries will retry until the function returns false.
             */
            retry: false,
            /**
             * If set to `true`, the query will refetch on window focus if the data is stale.
             * If set to `false`, the query will not refetch on window focus.
             * If set to `'always'`, the query will always refetch on window focus.
             * If set to a function, the function will be executed with the latest data and query to compute the value.
             * Defaults to `true`.
             */
            refetchOnWindowFocus: false,
        },
    },
});

ready

When you run an <Admin> with no child <Resource> nor <CustomRoutes>, react-admin displays a “ready” screen:

Empty Admin

You can replace that “ready” screen by passing a custom component as the ready prop:

import * as React from 'react';
import { Admin } from 'react-admin';

const Ready = () => (
    <div>
        <h1>Admin ready</h1>
        <p>You can now add resources</p>
    </div>
)

const App = () => (
    <Admin ready={Ready}>
        ...
    </Admin>
);

requireAuth

Some pages in react-admin apps may allow anonymous access. For that reason, react-admin starts rendering the page layout before knowing if the user is logged in. If all the pages require authentication, this default behaviour creates an unwanted “flash of UI” for users who never logged in, before the authProvider redirects them to the login page.

If you know your app will never accept anonymous access, you can force the app to wait for the authProvider.checkAuth() to resolve before rendering the page layout, by setting the <Admin requireAuth> prop.

const App = () => (
    <Admin dataProvider={dataProvider} authProvider={authProvider} requireAuth>
        <Resource name="posts" list={PostList} />
    </Admin>
);

store

The <Admin> component initializes a Store for user preferences using localStorage as the storage engine. You can override this by passing a custom store prop.

For instance, you can store the data in memory instead of localStorage. This is useful e.g. for tests, or for apps that should not persist user data between sessions:

import { Admin, Resource, memoryStore } from 'react-admin';

const App = () => (
    <Admin dataProvider={dataProvider} store={memoryStore()}>
        <Resource name="posts" />
    </Admin>
);

Check the Preferences documentation for more details.

theme

Material UI supports theming. This lets you customize the look and feel of an admin by overriding fonts, colors, and spacing. You can provide a custom Material UI theme by using the theme prop.

For instance, to use a dark theme by default:

import { defaultTheme } from 'react-admin';

const theme = {
    ...defaultTheme,
    palette: { mode: 'dark' },
};

const App = () => (
    <Admin theme={theme} dataProvider={simpleRestProvider('http://path.to.my.api')}>
        // ...
    </Admin>
);

Dark theme

If you want to support both a light and a dark theme, check out the <Admin darkTheme> prop.

For more details on predefined themes and custom themes, refer to the Theming chapter of the react-admin documentation.

title

On error pages, the header of an admin app uses ‘React Admin’ as the main app title. Use the title to customize it.

const App = () => (
    <Admin title="My Custom Admin" dataProvider={simpleRestProvider('http://path.to.my.api')}>
        // ...
    </Admin>
);

Declaring resources at runtime

You might want to dynamically define the resources when the app starts. To do so, you have two options: using a function as <Admin> child, or unplugging it to use a combination of AdminContext and <AdminUI> instead.

Using a Function As <Admin> Child

The <Admin> component accepts a function as one of its children and this function can return a Promise. If you also defined an authProvider, the child function will receive the result of a call to authProvider.getPermissions() (you can read more about this in the Auth Provider chapter).

For instance, getting the resource from an API might look like:

import * as React from "react";
import { Admin, Resource } from 'react-admin';
import simpleRestProvider from 'ra-data-simple-rest';

import { PostList } from './posts';
import { CommentList } from './comments';

const knownResources = [
    <Resource name="posts" list={PostList} />,
    <Resource name="comments" list={CommentList} />,
];

const fetchResources = permissions =>
    fetch('https://myapi/resources', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
        },
        body: JSON.stringify(permissions),
    })
    .then(response => response.json())
    .then(json => knownResources.filter(resource => json.resources.includes(resource.props.name)));

const App = () => (
    <Admin dataProvider={simpleRestProvider('http://path.to.my.api')}>
        {fetchResources}
    </Admin>
);

Unplugging the <Admin> using <AdminContext> and <AdminUI>

Setting Resources dynamically using the children-as-function syntax may not be enough in all cases, because this function can’t execute hooks.

So it’s impossible, for instance, to have a dynamic list of resources based on a call to the dataProvider (since the dataProvider is only defined after the <Admin> component renders).

To overcome this limitation, you can build your own <Admin> component using two lower-level components: <AdminContext> (responsible for putting the providers in contexts) and <AdminUI> (responsible for displaying the UI). Through this approach you’ll have to bring your own i18n provider and store. Luckily react-admin provides easy to use defaults for you. Here is an example:

import * as React from 'react';
import { useEffect, useState } from 'react';
import {
    AdminContext,
    AdminUI,
    defaultI18nProvider,
    localStorageStore,
    Resource,
    ListGuesser,
    Loading,
    useDataProvider,
} from 'react-admin';

const store = localStorageStore();

function App() {
    return (
        <AdminContext dataProvider={myDataProvider} i18nProvider={defaultI18nProvider} store={store}>
            <AsyncResources />
        </AdminContext>
    );
}

function AsyncResources() {
    const [resources, setResources] = useState([]);
    const dataProvider = useDataProvider();

    useEffect(() => {
        // Note that the `getResources` is not provided by react-admin. You have to implement your own custom verb.
        dataProvider.getResources().then(r => setResources(r));
    }, []);

    return (
        <AdminUI ready={Loading}>
            {resources.map(resource => (
                <Resource name={resource.name} key={resource.key} list={ListGuesser} />
            ))}
        </AdminUI>
    );
}

In this example, we override the <AdminUI ready> component to prevent the admin from displaying the ready screen in development while the list of resources is empty.