Suspense

情報

• 最新のReactバージョンを使用していることを確認してください
• Next.jsでtRPCの*自動*SSRとともにSuspenseを使用する場合、クエリが失敗すると、<ErrorBoundary />があっても、サーバー上でページ全体がクラッシュします。

使用方法

ヒント

useSuspenseQueryとuseSuspenseInfiniteQueryはどちらも[data, query]のタプルを返し、データの直接使用と説明的な変数名へのリネームを容易にします。

useSuspenseQuery()

tsx
// @filename: pages/index.tsx
import React from 'react';
import { trpc } from '../utils/trpc';
 
function PostView() {
  const [post, postQuery] = trpc.post.byId.useSuspenseQuery({ id: '1' });
          
const post: {
    id: string;
    title: string;
}
 
  return <>{/* ... */}</>;
}

tsx
// @filename: pages/index.tsx
import React from 'react';
import { trpc } from '../utils/trpc';
 
function PostView() {
  const [post, postQuery] = trpc.post.byId.useSuspenseQuery({ id: '1' });
          
const post: {
    id: string;
    title: string;
}
 
  return <>{/* ... */}</>;
}

useSuspenseInfiniteQuery()

tsx
// @filename: pages/index.tsx
import React from 'react';
import { trpc } from '../utils/trpc';
function PostView() {
  const [pages, allPostsQuery] = trpc.post.all.useSuspenseInfiniteQuery(
    {},
    {
      getNextPageParam(lastPage) {
        return lastPage.nextCursor;
      },
    },
  );
  const { isFetching, isFetchingNextPage, fetchNextPage, hasNextPage } =
    allPostsQuery;
  return <>{/* ... */}</>;
}

tsx
// @filename: pages/index.tsx
import React from 'react';
import { trpc } from '../utils/trpc';
function PostView() {
  const [pages, allPostsQuery] = trpc.post.all.useSuspenseInfiniteQuery(
    {},
    {
      getNextPageParam(lastPage) {
        return lastPage.nextCursor;
      },
    },
  );
  const { isFetching, isFetchingNextPage, fetchNextPage, hasNextPage } =
    allPostsQuery;
  return <>{/* ... */}</>;
}

useSuspenseQueries()

useQueries()のSuspense対応版。

tsx
const Component = (props: { postIds: string[] }) => {
  const [posts, postQueries] = trpc.useSuspenseQueries((t) =>
    props.postIds.map((id) => t.post.byId({ id })),
  );
  return <>{/* [...] */}</>;
};

tsx
const Component = (props: { postIds: string[] }) => {
  const [posts, postQueries] = trpc.useSuspenseQueries((t) =>
    props.postIds.map((id) => t.post.byId({ id })),
  );
  return <>{/* [...] */}</>;
};