ListLiveUpdate

<ListLiveUpdate> refreshes its parent ListContext (e.g in a <ListBase>) when a record is created, updated, or deleted. It therefore displays up-to-date data in real-time.

This feature requires a valid is an Enterprise Edition subscription.

Installation

npm install @react-admin/ra-core-ee
# or
yarn add @react-admin/ra-core-ee

Usage

Add the <ListLiveUpdate> in your <ListBase> children:

import { ListBase, RecordsIterator } from 'ra-core';
import { ListLiveUpdate } from '@react-admin/ra-core-ee';

const PostList = () => (
    <ListBase>
        <ul>
            <RecordsIterator
                render={record => <li>{record.title} - {record.views}</li>}
            />
        </ul>
        <ListLiveUpdate />
    </ListBase>
);

To trigger a refresh of <ListLiveUpdate>, the API has to publish an event containing at least the following data:

{
    topic : '/resource/{resource}',
    event: {
        type: '{deleted || created || updated}',
        payload: { ids: [{listOfRecordIdentifiers}]},
    }
}

This also works with <ReferenceManyFieldBase> or <ReferenceArrayFieldBase>:

import { ShowBase, RecordsIterator } from 'ra-core';
import { ReferenceManyFieldBase, ListLiveUpdate } from '@react-admin/ra-core-ee';

const AuthorShow = () => (
    <ShowBase>
        <div style={{ display: 'flex', flexDirection: 'column', gap: '1rem' }}>
            {/* Other author details here */}
            <ReferenceManyFieldBase
                reference="books"
                target="author_id"
                label="Books"
            >
                <ul>
                    <RecordsIterator
                        render={record => <li>{record.title}</li>}
                    />
                </ul>
                <ListLiveUpdate />
            </ReferenceManyFieldBase>
        </div>
    </ShowBase>
);

Props

Prop	Required	Type	Default	Description
onEventReceived	Optional	function	-	A function that allows to customize side effects when an event is received

onEventReceived

The <ListLiveUpdate> allows you to customize the side effects triggered when it receives a new event, by passing a function to the onEventReceived prop:

import { ListBase, RecordsIterator, useNotify, useRefresh } from 'ra-core';
import { ReferenceManyFieldBase, ListLiveUpdate } from '@react-admin/ra-core-ee';

const PostList = () => {
    const notify = useNotify();
    const refresh = useRefresh();

    const handleEventReceived = (event) => {
        const count = get(event, 'payload.ids.length', 1);
        notify(`${count} items updated by another user`);
        refresh();
    };

    return (
        <ListBase>
            <ul>
                <RecordsIterator
                    render={record => <li>{record.title} - {record.views}</li>}
                />
            </ul>
            <ListLiveUpdate onEventReceived={handleEventReceived} />
        </ListBase>
    );
};