{"id":22270,"date":"2023-09-01T08:49:43","date_gmt":"2023-08-31T23:49:43","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=22270"},"modified":"2023-09-09T18:38:57","modified_gmt":"2023-09-09T09:38:57","slug":"%e3%80%90next-js%e3%80%91app-router%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=22270","title":{"rendered":"\u3010Next.js\u3011App Router\u306b\u3064\u3044\u3066"},"content":{"rendered":"\n

Next.js13\u304b\u3089\u767b\u5834\u3057\u305fApp Router\u3068\u3044\u3046\u6a5f\u80fd\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

\u306a\u305c\u3053\u306e\u6280\u8853\u304c\u51fa\u3066\u304d\u305f\u306e\u304b\uff1f<\/h2>\n\n\n\n

\u4eca\u307e\u3067\u306eNext.js\u306f\u30c7\u30fc\u30bf\u53d6\u5f97\u306f\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30a4\u30c9\u3068\u3044\u3046\u5f62\u3067\u660e\u78ba\u306b\u5f79\u5272\u304c\u5206\u304b\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

\u3057\u304b\u3057\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30a4\u30c9\u306e\u7aef\u672b\u306e\u6027\u80fd\u306f\u30e6\u30fc\u30b6\u30fc\u306b\u3088\u3063\u3066\u307e\u3061\u307e\u3061\u3067\u3059\u3002\uff08\u578b\u843d\u3061\u306ePC\u3084\u30b9\u30de\u30db\u306a\u3069\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u4eba\u3082\u591a\u3044\u3067\u3059\u3002\uff09\u306a\u306e\u3067\u3001\u6027\u80fd\u3092\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3057\u3084\u3059\u3044\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u601d\u3044\u5207\u3063\u3066\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3082\u884c\u3063\u3066\u3057\u307e\u304a\u3046\u3068\u3044\u3046\u306e\u304c\u57fa\u672c\u601d\u60f3\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u3053\u3046\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u30e6\u30fc\u30b6\u30fc\u8d77\u56e0\u3067\u30da\u30fc\u30b8\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u843d\u3061\u308b\u3068\u3044\u3046\u3053\u3068\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

\u7279\u5fb4<\/h2>\n\n\n\n

React18\u306eRSC\u3068SSR\u3092\u4f75\u7528\u3057\u3066\u3044\u308b\u3002<\/p>\n\n\n\n

RSC\u3001Server Action\u3001Experimental Hooks\u304c\u5229\u7528\u53ef\u80fd\u306b\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n

\u305d\u3082\u305d\u3082\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u307e\u3060\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u90e8\u5206\u3082\u3042\u308b\u3002<\/p>\n\n\n\n

\u30a4\u30e1\u30fc\u30b8<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

SubTree\uff08\u30b5\u30d6\u30c4\u30ea\u30fc\uff09<\/h3>\n\n\n\n

app\u968e\u5c64\u304b\u3089\u305d\u308c\u305e\u308c\u5206\u5c90\u3057\u3066\u3044\u308b\u305d\u308c\u305e\u308c\u306e\u584a\u306e\u3053\u3068\u3092SubTree\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n\n\n\n

Segment<\/h3>\n\n\n\n

SubTree\u5185\u306e\u5404\u8981\u7d20(aaa\u3001bbb\u306a\u3069)\u306e\u3053\u3068\u3067\u3059\u3002\u5404\u30bb\u30b0\u30e1\u30f3\u30c8\u306fURL\u30d1\u30b9\u3067\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u4e0a\u8a18\u4f8b\u3067\u3044\u3048\u3070\u3001\u300chttps:\/\/xxx.com\/aaa\u300d\u3084\u3001\u300chttps:\/\/xxx.com\/bbb\/ccc\u300d\u306a\u3069\u3068\u3044\u3063\u305f\u611f\u3058\u3067\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n

app\u30c7\u30a3\u30ec\u30af\u30c8\u30ea<\/h2>\n\n\n\n

app\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u914d\u4e0b\u306b\u306f\u3042\u3089\u304b\u3058\u3081\u6c7a\u3081\u3089\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u540d\u304c\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

layout<\/td>\u30ec\u30a4\u30a2\u30a6\u30c8\u3092\u5b9a\u7fa9\u3059\u308b\u3002app\u76f4\u4e0b\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u30eb\u30fc\u30c8\u30ec\u30a4\u30a2\u30a6\u30c8\u3068\u307f\u306a\u3055\u308c\u307e\u3059\u3002
\u5f93\u6765\u306epage-router\u3067\u3044\u3048\u3070\u300c_app.tsx\u300d\u3068\u540c\u3058\u3088\u3046\u306b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5168\u4f53\u3067\u9069\u7528\u3057\u305f\u3044\u8a2d\u5b9a\u306f\u3053\u3061\u3089\u306b\u304b\u3051\u307e\u3059\u3002
\u306a\u304a\u3001\u660e\u793a\u7684\u306b\u5b9f\u88c5\u3057\u306a\u304f\u3066\u3082page\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u81ea\u52d5\u7684\u306blayout\u306b\u6e21\u3055\u308c\u3066\u30e9\u30c3\u30d7\u3055\u308c\u307e\u3059\u3002
\u306a\u304a\u3001\u3053\u3061\u3089layout\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u5171\u901a\u90e8\u54c1\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u5185\u5bb9\u306f\u518d\u5ea6\u30da\u30fc\u30b8\u8aad\u307f\u8fbc\u307f\u304c\u8d77\u3053\u3089\u306a\u3044\u9650\u308a\u306f\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306f\u884c\u308f\u308c\u306a\u3044\u4ed5\u69d8\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\uff08\u30d1\u30fc\u30b7\u30e3\u30eb\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\uff09<\/td><\/tr>
error<\/td>\u30a8\u30e9\u30fc\u30d0\u30a6\u30f3\u30c0\u30ea\u30fc<\/td><\/tr>
loading<\/td>\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u3001\u3053\u308c\u3092\u7528\u610f\u3057\u305f\u5834\u5408\u306f\u30da\u30fc\u30b8\u5168\u4f53\u304c\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u5bfe\u8c61\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u30da\u30fc\u30b8\u306e\u4e2d\u306e\u30d5\u30a7\u30c3\u30c1\u90e8\u5206\u306e\u307f\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u5bfe\u8c61\u3068\u3059\u308b\u3068\u3044\u3046\u3088\u3046\u306a\u6307\u5b9a\u3082\u53ef\u80fd\u3067\u3059\u3002<\/td><\/tr>
page<\/td>\u5bfe\u8c61\u306e\u30bb\u30b0\u30e1\u30f3\u30c8\u306e\u30e6\u30fc\u30b6\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u8a18\u8ff0\u3059\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002<\/td><\/tr>
not-found<\/td>\u30da\u30fc\u30b8\u304c\u898b\u3064\u304b\u3089\u306a\u3044\u5834\u5408\u306e\u30da\u30fc\u30b8\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u307e\u3059\u3002
import { notFound } from 'next\/navigation'
notFound\u3092\u3044\u3064\u51fa\u3059\u304b\u306e\u5236\u5fa1\u306f\u4e0a\u8a18\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u5b9f\u88c5\u30b3\u30fc\u30c9\u306b\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u305f\u3046\u3048\u3067\u5b9f\u65bd\u3057\u307e\u3059\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u4e0a\u8a18\u306e\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u914d\u7f6e\u3057\u305f\u5834\u5408\u306b\u81ea\u52d5\u7684\u306bNext.js\u304c\u30e9\u30c3\u30d7\u3057\u305f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u3066\u304f\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002layout.tsx\u3001error.tsx\u3001loading.tsx\u3001page.tsx\u3092\u305d\u308c\u305e\u308c\u7528\u610f\u3057\u305f\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u968e\u5c64\u3067\u30e9\u30c3\u30d7\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

<Layout>\n    <ErrorBoundary fallback={<Error \/>}>\n        <Suspense fallback={<Loading \/>}>\n            <Page \/>\n        <\/Suspense>\n    <\/ErrorBoundary>\n<\/Layout><\/code><\/pre>\n\n\n\n
\u305f\u3060\u3057\u3001loading\u306b\u95a2\u3057\u3066\u306f\u5168\u3066\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u304a\u3044\u3066loading\u304c\u52d5\u304f\u308f\u3051\u3067\u306f\u306a\u3044\u3068\u3044\u3046\u72b6\u6cc1\u306e\u65b9\u304c\u591a\u3044\u3067\u3059\u3002\u4e00\u90e8\u30d5\u30a7\u30c3\u30c1\u3057\u305f\u3044\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3060\u3051\u9069\u7528\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u304c\u4e00\u822c\u7684\u306a\u306e\u3067\u5b9f\u8cea\u7684\u306bloding.tsx\u3092\u5358\u4f53\u3067\u4f7f\u3046\u3053\u3068\u306f\u958b\u767a\u306b\u304a\u3044\u3066\u306f\u7a00\u3067\u3059\u3002<\/p>\n\n\n\n
\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u500b\u5225\u306b\u30d5\u30a7\u30c3\u30c1\u3057\u305f\u3044\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5468\u308a\u3060\u3051Suspense\u3092\u4f7f\u3063\u3066\u30e9\u30c3\u30d7\u3059\u308b\u5b9f\u88c5\u304c\u30e1\u30a4\u30f3\u306b\u306a\u308a\u307e\u3059\u3002\uff08\u305d\u3046\u3059\u308b\u3068loading.tsx\u3068\u3044\u3046\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u81ea\u4f53\u304c\u4e0d\u8981\u306b\u306a\u308a\u307e\u3059\u3002\uff09<\/p>\n\n\n\n
        <Suspense fallback={<loading\u7528\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8 \/>}>\n          <\u30d5\u30a7\u30c3\u30c1\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\/>\n        <\/Suspense><\/code><\/pre>\n\n\n\n
Error<\/h3>\n\n\n\n
'use client'\n\nexport default function Error({ error }: { error: Error }) {\n  return (\n    <div>\n      <p>\n        Data fetching in server failed\n      <\/p>\n    <\/div>\n  )\n}<\/code><\/pre>\n\n\n\n
\u30b5\u30fc\u30d0\u30fc\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u767a\u751f\u3057\u305f\u30a8\u30e9\u30fc\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u65b9\u3067\u8868\u793a\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u3001\u4e00\u756a\u4e0a\u306b\u300c'use client'\u300d\u3068\u3044\u3046\u69cb\u6587\u3092\u4f7f\u3046\u3053\u3068\u3067\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u3059\u308b\u3053\u3068\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\u4ed5\u7d44\u307f<\/h3>\n\n\n\n
app\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u914d\u4e0b\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u5168\u3066\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u300c\u30b5\u30fc\u30d0\u30fc\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u300d\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u8ffd\u52a0\u3057\u305f\u3044\u5834\u5408<\/h3>\n\n\n\n
app\u30d5\u30a9\u30eb\u30c0\u306e\u914d\u4e0b\u306b\u300ccomponents\u300d\u3068\u3044\u3046\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3066\u305d\u306e\u4e0b\u306b\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u914d\u7f6e\u3057\u3066\u3044\u304f\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n
Nested-Layout<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u3053\u306e\u3088\u3046\u306a\u5f62\u3067app\u914d\u4e0b\u306b\u30d5\u30a9\u30eb\u30c0\u3092\u5165\u308c\u5b50\u306b\u3057\u3066\u914d\u7f6e\u3057\u3066layout\u3084page\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u3082\u914d\u7f6e\u3057\u3066\u3044\u304f\u3068URL\u3082\u5165\u308c\u5b50\u306b\u306a\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
\u4e0a\u8a18\u4f8b\u3067\u3044\u3048\u3070\u3001third\u306epage\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3044\u5834\u5408\u306f\u300chttp:\/\/localhost:3000\/second\/third\/\u300d\u3068\u6307\u5b9a\u3059\u308c\u3070\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n
dynamic segment<\/h2>\n\n\n\n
\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u968e\u5c64\u3092\u7528\u610f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
users\n\u2514[userId]\n\u3000\u2514page.tsx\n\u2514page.tsx<\/code><\/pre>\n\n\n\n
[userId]\u30d5\u30a9\u30eb\u30c0\u306e\u4e2d\u306epage.tsx\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9f\u88c5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
import { notFound } from 'next\/navigation'\n\nasync function fetchUser(userId: string) {\n  const url = `${process.env.url}\/rest\/v1\/users?id=eq.${userId}`\n  const res = await fetch(\n    url,cache: 'no-store',\n    }\n  )\n  const users = await res.json()\n  return users[0]\n}\n\nexport default async function UserDetailPage({ params }: PageProps) {\n  const user = await fetchUser(params.userId)\n  if (!user) return notFound()\n  return (\n    <div className=\"mt-16 p-8\">\n      <p>\n        <strong className=\"mr-3\">Name:<\/strong> {user.name}\n      <\/p>\n      <p>\n        <strong className=\"mr-3\">Age:<\/strong> {user.age}\n      <\/p>\n    <\/div>\n  )\n}<\/code><\/pre>\n\n\n\n
URL\u3068\u3057\u3066\u306f\u3001\u300c\u89aa\u30bb\u30b0\u30e1\u30f3\u30c8\/{userId}\u300d\u307f\u305f\u3044\u306a\u611f\u3058\u3067\u4e0a\u8a18\u51e6\u7406\u304c\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u307e\u3059\u3002\u8a73\u7d30\u30da\u30fc\u30b8\u306e\u8868\u793a\u306a\u3069\u306b\u4f7f\u3048\u307e\u3059\u3002<\/p>\n\n\n\n
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export async function generateStaticParams() {\n  const res = await fetch(URL)\n  const users = await res.json()\n\n  return users.map((user) => ({\n    userId: user.id.toString(),\n  }))\n}<\/code><\/pre>\n\n\n\n
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