SanYeCao-blog/src/pages/rss.xml.js

import rss from '@astrojs/rss';
import { pagesGlobToRssItems } from '@astrojs/rss';
import { getCollection } from 'astro:content';

export async function GET(context) {
    const posts = await getCollection("blog");
    return rss({
        title: 'Astro Learner | Blog',
        description: 'My journey learning Astro',
        site: context.site,
        items: await pagesGlobToRssItems(import.meta.glob('./**/*.md')),
        items: posts.map((post) => ({
            title: post.data.title,
            pubDate: post.data.pubDate,
            description: post.data.description,
            link: `/posts/${post.id}/`,
        })),
        customData: `<language>en-us</language>`,
    })
}