前端项目实战壹佰伍拾柒react-admin+material ui-react-admin之useGetIdentity

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import { useGetIdentity, useGetOne } from 'react-admin';

const PostDetail = ({ id }) => {
    const { data: post, isLoading: postLoading } = useGetOne('posts', { id });
    const { data: identity, isLoading: identityLoading } = useGetIdentity();
    if (postLoading || identityLoading) return <>Loading...</>;
    if (!post.lockedBy || post.lockedBy === identity.id) {
        // post isn't locked, or is locked by me
        return <PostEdit post={post} />
    } else {
        // post is locked by someone else and cannot be edited
        return <PostShow post={post} />
    }
}

返回一个包含加载状态、错误状态和标识的对象