在React中的多个上下文提供者之间传递数据

Question

我有几个上下文提供程序（UserContextProvider和PostContextProvider）。我需要在PostContextProvider内部使用UserContextProvider中的值（用户），该怎么做？

class CustomUserManager(BaseUserManager):
    use_in_migrations = True

    ...

//user context

export const UserContext = React.createContext({ user: null});
export const UserContextProvider = (props) => {
 const [user, setUser] = useState(null);

 const getUser = async () => {
    ...fetch user data form the api
    setUser(response.data);
 }

 return <UserContext.Provider value={user}>{props.children}</UserContext.Provider>;
}

//post context

export const PostContext = React.createContext({ post: null});
export const PostContextProvider = (props) => {
 const [post, setPost] = useState(null);

 const getUser = async () => {
    ...fetch post data form the api
    setPost(response.data);
 }

 return <PostContext.Provider value={post}>{props.children}</PostContext.Provider>;
}