# Authentication Support

API Platform Admin delegates the authentication support to React Admin. Refer to the chapter dedicated to authentication in the React Admin documentation for more information.

In short, you have to tweak the data provider and the API documentation parser like this:

// components/admin/Admin.tsx

import Head from "next/head";
import { useState } from "react";
import { Navigate, Route } from "react-router-dom";
import { CustomRoutes } from "react-admin";
import {
  fetchHydra as baseFetchHydra,
  HydraAdmin,
  hydraDataProvider as baseHydraDataProvider,
  useIntrospection,
} from "@api-platform/admin";
import { parseHydraDocumentation } from "@api-platform/api-doc-parser";
import authProvider from "utils/authProvider";
import { ENTRYPOINT } from "config/entrypoint";

const getHeaders = () => localStorage.getItem("token") ? {
  Authorization: `Bearer ${localStorage.getItem("token")}`,
} : {};
const fetchHydra = (url, options = {}) =>
  baseFetchHydra(url, {
    ...options,
    headers: getHeaders,
  });
const RedirectToLogin = () => {
  const introspect = useIntrospection();

  if (localStorage.getItem("token")) {
    introspect();
    return <></>;
  }
  return <Navigate to="/login" />;
};
const apiDocumentationParser = (setRedirectToLogin) => async () => {
  try {
    setRedirectToLogin(false);

    return await parseHydraDocumentation(ENTRYPOINT, { headers: getHeaders });
  } catch (result) {
    const { api, response, status } = result;
    if (status !== 401 || !response) {
      throw result;
    }

    // Prevent infinite loop if the token is expired
    localStorage.removeItem("token");

    setRedirectToLogin(true);

    return {
      api,
      response,
      status,
    };
  }
};
const dataProvider = (setRedirectToLogin) => baseHydraDataProvider({
  entrypoint: ENTRYPOINT,
  httpClient: fetchHydra,
  apiDocumentationParser: apiDocumentationParser(setRedirectToLogin),
});

const Admin = () => {
  const [redirectToLogin, setRedirectToLogin] = useState(false);

  return (
    <>
      <Head>
        <title>API Platform Admin</title>
      </Head>

      <HydraAdmin dataProvider={dataProvider(setRedirectToLogin)} authProvider={authProvider} entrypoint={window.origin}>
        <CustomRoutes>
          {redirectToLogin ? <Route path="/" element={<RedirectToLogin />} /> : null}
        </CustomRoutes>
      </HydraAdmin>
    </>
  );
}
export default Admin;

For the implementation of the auth provider, you can find a working example in the API Platform’s demo application.

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# Authentication Support