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feat: automatically generate meta descriptions for articles

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This commit is contained in:
radishzzz 2025-03-12 16:17:37 +00:00
parent 78de8b7911
commit 79f9765688
3 changed files with 51 additions and 10 deletions
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23
src/layouts/Head.astro
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@ -9,13 +9,18 @@ interface Props {
} }
const { postTitle, postDescription, postImage } = Astro.props const { postTitle, postDescription, postImage } = Astro.props
const { title, subtitle, description, author, url, favicon } = themeConfig.site const { title, subtitle, description, author, url, favicon } = themeConfig.site
const { mode, light: { background: lightMode }, dark: { background: darkMode } } = themeConfig.color const { mode, light: { background: lightMode }, dark: { background: darkMode } } = themeConfig.color
const initMetaTheme = mode === 'dark' ? darkMode : lightMode
const { locale, moreLocale } = themeConfig.global const { locale, moreLocale } = themeConfig.global
const { verification = {}, twitterID = '', googleAnalyticsID = '', umamiAnalyticsID = '' } = themeConfig.seo ?? {} const { verification = {}, twitterID = '', googleAnalyticsID = '', umamiAnalyticsID = '' } = themeConfig.seo ?? {}
const { google = '', bing = '', yandex = '', baidu = '' } = verification const { google = '', bing = '', yandex = '', baidu = '' } = verification
const { commentURL = '', imageHostURL = '', customGoogleAnalyticsJS = '', customUmamiAnalyticsJS = '' } = themeConfig.preload const { commentURL = '', imageHostURL = '', customGoogleAnalyticsJS = '', customUmamiAnalyticsJS = '' } = themeConfig.preload
const initMetaTheme = mode === 'dark' ? darkMode : lightMode
const pageTitle = postTitle ? `${postTitle} | ${title}` : `${title} - ${subtitle}`
const pageDescription = postDescription || description
const pageImage = postImage || favicon
--- ---
<head> <head>
@ -25,8 +30,8 @@ const { commentURL = '', imageHostURL = '', customGoogleAnalyticsJS = '', custom
{favicon.toLowerCase().endsWith('.webp') && <link rel="icon" type="image/webp" href={favicon} />} {favicon.toLowerCase().endsWith('.webp') && <link rel="icon" type="image/webp" href={favicon} />}
{favicon.toLowerCase().endsWith('.svg') && <link rel="icon" type="image/svg+xml" href={favicon} />} {favicon.toLowerCase().endsWith('.svg') && <link rel="icon" type="image/svg+xml" href={favicon} />}
{favicon.toLowerCase().endsWith('.png') && <link rel="icon" type="image/png" href={favicon} />} {favicon.toLowerCase().endsWith('.png') && <link rel="icon" type="image/png" href={favicon} />}
<title>{postTitle ? `${postTitle} | ${title}` : `${title} - ${subtitle}`}</title> <title>{pageTitle}</title>
<meta name="description" content={postDescription || description} /> <meta name="description" content={pageDescription} />
<meta name="author" content={author} /> <meta name="author" content={author} />
<meta name="generator" content={Astro.generator} /> <meta name="generator" content={Astro.generator} />
<meta name="theme-color" content={initMetaTheme} /> <meta name="theme-color" content={initMetaTheme} />
@ -52,18 +57,18 @@ const { commentURL = '', imageHostURL = '', customGoogleAnalyticsJS = '', custom
))} ))}
<!-- Facebook Open Graph --> <!-- Facebook Open Graph -->
<meta property="og:title" content={postTitle || title} /> <meta property="og:title" content={pageTitle} />
<meta property="og:type" content={postTitle ? 'article' : 'website'} /> <meta property="og:type" content={postTitle ? 'article' : 'website'} />
<meta property="og:image" content={postImage || favicon} /> <meta property="og:image" content={pageImage} />
<meta property="og:url" content={Astro.url} /> <meta property="og:url" content={Astro.url} />
<meta property="og:description" content={postDescription || subtitle} /> <meta property="og:description" content={pageDescription} />
<meta property="og:site_name" content={title} /> <meta property="og:site_name" content={title} />
<!-- Twitter Card --> <!-- Twitter Card -->
<meta name="twitter:card" content="summary" /> <meta name="twitter:card" content="summary" />
<meta name="twitter:title" content={postTitle || title} /> <meta name="twitter:title" content={pageTitle} />
<meta name="twitter:description" content={postDescription || subtitle} /> <meta name="twitter:description" content={pageDescription} />
<meta name="twitter:image" content={postImage || favicon} /> <meta name="twitter:image" content={pageImage} />
{twitterID && ( {twitterID && (
<> <>
<meta name="twitter:site" content={twitterID} /> <meta name="twitter:site" content={twitterID} />

4
src/pages/posts/[slug].astro
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@ -3,6 +3,7 @@ import Comments from '@/components/Comments/index.astro'
import PostTime from '@/components/PostTime.astro' import PostTime from '@/components/PostTime.astro'
import Layout from '@/layouts/Layout.astro' import Layout from '@/layouts/Layout.astro'
import { checkSlugDuplication } from '@/utils/content' import { checkSlugDuplication } from '@/utils/content'
import { generateDescription } from '@/utils/description'
import { generatePostPaths } from '@/utils/i18n/route' import { generatePostPaths } from '@/utils/i18n/route'
import { getCollection } from 'astro:content' import { getCollection } from 'astro:content'
@ -18,12 +19,13 @@ export async function getStaticPaths() {
} }
const { post } = Astro.props const { post } = Astro.props
const description = generateDescription(post)
const { Content, remarkPluginFrontmatter } = await post.render() const { Content, remarkPluginFrontmatter } = await post.render()
--- ---
<Layout <Layout
postTitle={post.data.title} postTitle={post.data.title}
postDescription={post.data.description} postDescription={description}
postImage={post.data.image} postImage={post.data.image}
> >
<article class="heti mb-12.6"> <article class="heti mb-12.6">

34
src/utils/description.ts Normal file
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@ -0,0 +1,34 @@
import type { CollectionEntry } from 'astro:content'
import MarkdownIt from 'markdown-it'
import sanitizeHtml from 'sanitize-html'
const parser = new MarkdownIt()
// Generate an excerpt from Markdown content
export function generateExcerpt(content: string, length: number = 100): string {
if (!content)
return ''
// Convert Markdown to plain text
const plainText = sanitizeHtml(parser.render(content), {
allowedTags: [],
allowedAttributes: {},
})
// Replace line breaks with spaces
const normalizedText = plainText.replace(/\s+/g, ' ')
const excerpt = normalizedText.slice(0, length).trim()
// Add ellipsis if text was truncated
const needsEllipsis = normalizedText.length > length
return needsEllipsis ? `${excerpt}...` : excerpt
}
// Automatically generate a description for the article
export function generateDescription(post: CollectionEntry<'posts'>): string {
// If the article already has a description, return it directly
if (post.data.description)
return post.data.description
// Otherwise, generate an excerpt from the article content as the description
return generateExcerpt(post.body)
}