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[slug].js
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/
[slug].js
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import Head from 'next/head'
import { useRouter } from 'next/router'
import ErrorPage from 'next/error'
import Container from '../../components/container'
import PostBody from '../../components/post-body'
import MoreStories from '../../components/more-stories'
import Header from '../../components/header'
import PostHeader from '../../components/post-header'
import SectionSeparator from '../../components/section-separator'
import Layout from '../../components/layout'
import PostTitle from '../../components/post-title'
import { CMS_NAME } from '../../lib/constants'
import { postQuery, postSlugsQuery } from '../../lib/queries'
import { urlForImage, usePreviewSubscription } from '../../lib/sanity'
import { sanityClient, getClient, overlayDrafts } from '../../lib/sanity.server'
export default function Post({ data = {}, preview }) {
const router = useRouter()
const slug = data?.post?.slug
const {
data: { post, morePosts },
} = usePreviewSubscription(postQuery, {
params: { slug },
initialData: data,
enabled: preview && slug,
})
if (!router.isFallback && !slug) {
return <ErrorPage statusCode={404} />
}
return (
<Layout preview={preview}>
<Container>
<Header />
{router.isFallback ? (
<PostTitle>Loading…</PostTitle>
) : (
<>
<article>
<Head>
<title>
{post.title} | Next.js Blog Example with {CMS_NAME}
</title>
{post.coverImage?.asset?._ref && (
<meta
key="ogImage"
property="og:image"
content={urlForImage(post.coverImage)
.width(1200)
.height(627)
.fit('crop')
.url()}
/>
)}
</Head>
<PostHeader
title={post.title}
coverImage={post.coverImage}
date={post.date}
author={post.author}
/>
<PostBody content={post.content} />
</article>
<SectionSeparator />
{morePosts.length > 0 && <MoreStories posts={morePosts} />}
</>
)}
</Container>
</Layout>
)
}
export async function getStaticProps({ params, preview = false }) {
const { post, morePosts } = await getClient(preview).fetch(postQuery, {
slug: params.slug,
})
return {
props: {
preview,
data: {
post,
morePosts: overlayDrafts(morePosts),
},
},
// If webhooks isn't setup then attempt to re-generate in 1 minute intervals
revalidate: process.env.SANITY_REVALIDATE_SECRET ? undefined : 60,
}
}
export async function getStaticPaths() {
const paths = await sanityClient.fetch(postSlugsQuery)
return {
paths: paths.map((slug) => ({ params: { slug } })),
fallback: true,
}
}