useGetList

This hook calls dataProvider.getList() when the component mounts. It’s ideal for getting a list of records. It supports filtering, sorting, and pagination.

Syntax

const { data, total, isLoading, error, refetch } = useGetList(
    resource,
    {
        pagination: { page, perPage },
        sort: { field, order },
        filter,
        meta
    },
    options
);

The meta argument is optional. It can be anything you want to pass to the data provider, e.g. a list of fields to show in the result.

The options parameter is optional, and is passed to react-query’s useQuery hook. It may contain the following options:

  • cacheTime
  • enabled
  • initialData
  • initialDataUpdatedAt
  • isDataEqual
  • keepPreviousData
  • meta
  • notifyOnChangeProps
  • notifyOnChangePropsExclusions
  • onError
  • onSettled
  • onSuccess
  • placeholderData
  • queryKeyHashFn
  • refetchInterval
  • refetchIntervalInBackground
  • refetchOnMount
  • refetchOnReconnect
  • refetchOnWindowFocus
  • retry
  • retryOnMount
  • retryDelay
  • select
  • staleTime
  • structuralSharing
  • suspense
  • useErrorBoundary

Check react-query’s useQuery hook documentation for details on each of these options.

The react-query query key for this hook is [resource, 'getList', { pagination, sort, filter, meta }].

Usage

import { useGetList } from 'react-admin';

const LatestNews = () => {
    const { data, total, isLoading, error } = useGetList(
        'posts',
        { 
            pagination: { page: 1, perPage: 10 },
            sort: { field: 'published_at', order: 'DESC' }
        }
    );
    if (isLoading) { return <Loading />; }
    if (error) { return <p>ERROR</p>; }
    return (
        <>
            <h1>Latest news</h1>
            <ul>
                {data.map(record =>
                    <li key={record.id}>{record.title}</li>
                )}
            </ul>
            <p>{data.length} / {total} articles</p>
        </>
    );
};

Partial Pagination

If your data provider doesn’t return the total number of records (see Partial Pagination), you can use the pageInfo field to determine if there are more records to fetch.

import { useState } from 'react';
import { useGetList } from 'react-admin';

const LatestNews = () => {
    const [page, setPage] = useState(1);
    const { data, pageInfo, isLoading, error } = useGetList(
        'posts',
        { 
            pagination: { page, perPage: 10 },
            sort: { field: 'published_at', order: 'DESC' }
        }
    );
    if (isLoading) { return <Loading />; }
    if (error) { return <p>ERROR</p>; }
    const { hasNextPage, hasPreviousPage } = pageInfo;

    const getNextPage = () => setPage(page + 1);

    return (
        <>
            <h1>Latest news</h1>
            <ul>
                {data.map(record =>
                    <li key={record.id}>{record.title}</li>
                )}
            </ul>
            {hasNextPage && <button onClick={getNextPage}>More articles</button>}
        </>
    );
};

Alternately, you can use the useInfiniteGetList hook to keep the previous pages on screen while loading new pages - just like users see older content when they scroll down their feed on social media.

Live Updates

If you want to subscribe to live updates on the list of records (topic: resource/[resource]), use the useGetListLive hook instead.

-import { useGetList } from 'react-admin';
+import { useGetListLive } from '@react-admin/ra-realtime';

const LatestNews = () => {
-   const { data, total, isLoading, error } = useGetList('posts', {
+   const { data, total, isLoading, error } = useGetListLive('posts', {
        pagination: { page: 1, perPage: 10 },
        sort: { field: 'published_at', order: 'DESC' },
    });
    if (isLoading) {
        return <Loading />;
    }
    if (error) {
        return <p>ERROR</p>;
    }

    return (
        <ul>
            {data.map(item => (
                <li key={item.id}>{item.title}</li>
            ))}
        </ul>
    );
};

The data will automatically update when a new record is created, or an existing record is updated or deleted.

TypeScript

The useGetList hook accepts a generic parameter for the record type:

import { useGetList } from 'react-admin';

type Post = {
    id: number;
    title: string;
};

const LatestNews = () => {
    const { data: posts, total, isLoading, error } = useGetList<Post>(
        'posts',
        { 
            pagination: { page: 1, perPage: 10 },
            sort: { field: 'published_at', order: 'DESC' }
        }
    );
    if (isLoading) { return <Loading />; }
    if (error) { return <p>ERROR</p>; }
    return (
        <>
            <h1>Latest news</h1>
            <ul>
                {/* TypeScript knows that posts is of type Post[] */}
                {posts.map(post =>
                    <li key={post.id}>{post.title}</li>
                )}
            </ul>
            <p>{posts.length} / {total} articles</p>
        </>
    );
};