CircleAround · ms2sato · Jan 17, 2025
diff --git a/contentlayer.config.ts b/contentlayer.config.ts
@@ -0,0 +1,18 @@
+
+import { defineDocumentType, makeSource } from 'contentlayer2/source-files'
+
+export const Post = defineDocumentType(() => ({
+  name: 'Post', // オブジェクトの名前
+  filePathPattern: `posts/**/*.md`, // どのパスにあるかの指定。
+  fields: { // Post が持つプロパティを指定する
+    title: { type: 'string', required: true }, // titleは文字列で必須
+    date: { type: 'date', required: true }, // dateは日時で必須
+  },
+  computedFields: { // 単純な値のプロパティではなく、計算で取得できるプロパティ
+    // url は 文字列を返す。
+    url: { type: 'string', resolve: (post) => `/${post._raw.flattenedPath}` },
+  },
+}))
+
+// contents ディレクトリがコンテンツのルート。型としては Post を利用
+export default makeSource({ contentDirPath: 'contents', documentTypes: [Post] })
diff --git a/contents/posts/post-1.md b/contents/posts/post-1.md
@@ -0,0 +1,5 @@
+---
+title: My First Post
+date: 2021-12-24
+---
+Ullamco et nostrud magna commodo nostrud ...
diff --git a/contents/posts/post-2.md b/contents/posts/post-2.md
@@ -0,0 +1,5 @@
+---
+title: My Second Post
+date: 2021-12-24
+---
+Ullamco et nostrud magna commodo nostrud ...
diff --git a/contents/posts/post-3.md b/contents/posts/post-3.md
@@ -0,0 +1,5 @@
+---
+title: My Third Post
+date: 2021-12-24
+---
+Ullamco et nostrud magna commodo nostrud ...
diff --git a/src/app/page.tsx b/src/app/page.tsx
@@ -1,101 +1,34 @@
-import Image from "next/image";
 
-export default function Home() {
+import Link from 'next/link'
+import { compareDesc, format, parseISO } from 'date-fns'
+import { allPosts, Post } from 'contentlayer/generated'
+
+function PostCard(post: Post) {
   return (
-    <div className="grid grid-rows-[20px_1fr_20px] items-center justify-items-center min-h-screen p-8 pb-20 gap-16 sm:p-20 font-[family-name:var(--font-geist-sans)]">
-      <main className="flex flex-col gap-8 row-start-2 items-center sm:items-start">
-        <Image
-          className="dark:invert"
-          src="/next.svg"
-          alt="Next.js logo"
-          width={180}
-          height={38}
-          priority
-        />
-        <ol className="list-inside list-decimal text-sm text-center sm:text-left font-[family-name:var(--font-geist-mono)]">
-          <li className="mb-2">
-            Get started by editing{" "}
-            <code className="bg-black/[.05] dark:bg-white/[.06] px-1 py-0.5 rounded font-semibold">
-              src/app/page.tsx
-            </code>
-            .
-          </li>
-          <li>Save and see your changes instantly.</li>
-        </ol>
+    <div className="mb-8">
+      <h2 className="mb-1 text-xl">
+        <Link href={post.url} className="text-blue-700 hover:text-blue-900 dark:text-blue-400">
+          {post.title}
+        </Link>
+      </h2>
+      <time dateTime={post.date} className="mb-2 block text-xs text-gray-600">
+        {format(parseISO(post.date), 'LLLL d, yyyy')}
+      </time>
+      <div className="text-sm [&>*]:mb-3 [&>*:last-child]:mb-0" dangerouslySetInnerHTML={{ __html: post.body.html }} />
+    </div>
+  )
+}
 
-        <div className="flex gap-4 items-center flex-col sm:flex-row">
-          <a
-            className="rounded-full border border-solid border-transparent transition-colors flex items-center justify-center bg-foreground text-background gap-2 hover:bg-[#383838] dark:hover:bg-[#ccc] text-sm sm:text-base h-10 sm:h-12 px-4 sm:px-5"
-            href="https://vercel.com/new?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            <Image
-              className="dark:invert"
-              src="/vercel.svg"
-              alt="Vercel logomark"
-              width={20}
-              height={20}
-            />
-            Deploy now
-          </a>
-          <a
-            className="rounded-full border border-solid border-black/[.08] dark:border-white/[.145] transition-colors flex items-center justify-center hover:bg-[#f2f2f2] dark:hover:bg-[#1a1a1a] hover:border-transparent text-sm sm:text-base h-10 sm:h-12 px-4 sm:px-5 sm:min-w-44"
-            href="https://nextjs.org/docs?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            Read our docs
-          </a>
-        </div>
-      </main>
-      <footer className="row-start-3 flex gap-6 flex-wrap items-center justify-center">
-        <a
-          className="flex items-center gap-2 hover:underline hover:underline-offset-4"
-          href="https://nextjs.org/learn?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <Image
-            aria-hidden
-            src="/file.svg"
-            alt="File icon"
-            width={16}
-            height={16}
-          />
-          Learn
-        </a>
-        <a
-          className="flex items-center gap-2 hover:underline hover:underline-offset-4"
-          href="https://vercel.com/templates?framework=next.js&utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <Image
-            aria-hidden
-            src="/window.svg"
-            alt="Window icon"
-            width={16}
-            height={16}
-          />
-          Examples
-        </a>
-        <a
-          className="flex items-center gap-2 hover:underline hover:underline-offset-4"
-          href="https://nextjs.org?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <Image
-            aria-hidden
-            src="/globe.svg"
-            alt="Globe icon"
-            width={16}
-            height={16}
-          />
-          Go to nextjs.org →
-        </a>
-      </footer>
+export default function Home() {
+  const posts = allPosts.sort((a, b) => compareDesc(new Date(a.date), new Date(b.date)))
+  console.log('posts', posts)
+
+  return (
+    <div className="mx-auto max-w-xl py-8">
+      <h1 className="mb-8 text-center text-2xl font-black">Next.js + Contentlayer Example</h1>
+      {posts.map((post, idx) => (
+        <PostCard key={idx} {...post} />
+      ))}
     </div>
-  );
+  )
 }