Pages Functions でフロントエンド向け API を作る

import { Routes, Route } from "react-router-dom";

import Posts from "./components/posts";
import Post from "./components/post";

function App() {
	return (
		<Routes>
			<Route path="/" element={<Posts />} />
			<Route path="/posts/:id" element={<Post />} />
		</Routes>
	);
}

export default App;

import React, { useEffect, useState } from "react";
import { Link } from "react-router-dom";

const Posts = () => {
	const [posts, setPosts] = useState([]);

	useEffect(() => {
		const getPosts = async () => {
			const resp = await fetch("/api/posts");
			const postsResp = await resp.json();
			setPosts(postsResp);
		};

		getPosts();
	}, []);

	return (
		<div>
			<h1>Posts</h1>
			{posts.map((post) => (
				<div key={post.id}>
					<h2>
						<Link to={`/posts/${post.id}`}>{post.title}</Link>
					</h2>
				</div>
			))}
		</div>
	);
};

export default Posts;

import React, { useEffect, useState } from "react";
import { Link, useParams } from "react-router-dom";

const Post = () => {
	const [post, setPost] = useState({});
	const { id } = useParams();

	useEffect(() => {
		const getPost = async () => {
			const resp = await fetch(`/api/post/${id}`);
			const postResp = await resp.json();
			setPost(postResp);
		};

		getPost();
	}, [id]);

	if (!Object.keys(post).length) return <div />;

	return (
		<div>
			<h1>{post.title}</h1>
			<p>{post.text}</p>
			<p>
				<em>Published {new Date(post.published_at).toLocaleString()}</em>
			</p>
			<p>
				<Link to="/">Go back</Link>
			</p>
		</div>
	);
};

export default Post;

import posts from "./post/data";

export function onRequestGet() {
	return Response.json(posts);
}

const posts = [
	{
		id: 1,
		title: "My first blog post",
		text: "Hello world! This is my first blog post on my new Cloudflare Workers + Pages blog.",
		published_at: new Date("2020-10-23"),
	},
	{
		id: 2,
		title: "Updating my blog",
		text: "It's my second blog post! I'm still writing and publishing using Cloudflare Workers + Pages :)",
		published_at: new Date("2020-10-26"),
	},
];

export default posts;

wrangler pages deploy blog-frontend

git init
git remote add origin https://github.com/<YOUR-GH-USERNAME>/<REPOSITORY-NAME>
git add .
git commit -m "Initial commit"
git branch -M main
git push -u origin main