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* chore: make canonicalUrl required * docs: explain env variable on required canonicalUrl * refactor: rename "canonicalUrl" to "site" * chore: changeset
150 lines
4.6 KiB
Markdown
150 lines
4.6 KiB
Markdown
# @astrojs/rss 📖
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This package brings fast RSS feed generation to blogs and other content sites built with [Astro](https://astro.build/). For more information about RSS feeds in general, see [aboutfeeds.com](https://aboutfeeds.com/).
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## Installation
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Install the `@astrojs/rss` package into any Astro project using your preferred package manager:
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```bash
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# npm
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npm i @astrojs/rss
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# yarn
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yarn add @astrojs/rss
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# pnpm
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pnpm i @astrojs/rss
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```
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## Example usage
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The `@astrojs/rss` package provides helpers for generating RSS feeds within [Astro endpoints][astro-endpoints]. This unlocks both static builds _and_ on-demand generation when using an [SSR adapter](https://docs.astro.build/en/guides/server-side-rendering/#enabling-ssr-in-your-project).
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For instance, say you need to generate an RSS feed for all posts under `src/pages/blog/`. Start by [adding a `site` to your project's `astro.config` for link generation](https://docs.astro.build/en/reference/configuration-reference/#site). Then, create an `rss.xml.js` file under your project's `src/pages/` directory, and use [Vite's `import.meta.glob` helper](https://vitejs.dev/guide/features.html#glob-import) like so:
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```js
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// src/pages/rss.xml.js
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import rss from '@astrojs/rss';
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export const get = () => rss({
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title: 'Buzz’s Blog',
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description: 'A humble Astronaut’s guide to the stars',
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// pull in the "site" from your project's astro.config
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site: import.meta.env.SITE,
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items: import.meta.glob('./blog/**/*.md'),
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});
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```
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Read **[Astro's RSS docs][astro-rss]** for full usage examples.
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## `rss()` configuration options
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The `rss` default export offers a number of configuration options. Here's a quick reference:
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```js
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rss({
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// `<title>` field in output xml
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title: 'Buzz’s Blog',
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// `<description>` field in output xml
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description: 'A humble Astronaut’s guide to the stars',
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// provide a base URL for RSS <item> links
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site: import.meta.env.SITE,
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// list of `<item>`s in output xml
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items: import.meta.glob('./**/*.md'),
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// (optional) absolute path to XSL stylesheet in your project
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stylesheet: '/rss-styles.xsl',
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// (optional) inject custom xml
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customData: '<language>en-us</language>',
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// (optional) add arbitrary metadata to opening <rss> tag
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xmlns: { h: 'http://www.w3.org/TR/html4/' },
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});
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```
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### title
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Type: `string (required)`
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The `<title>` attribute of your RSS feed's output xml.
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### description
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Type: `string (required)`
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The `<description>` attribute of your RSS feed's output xml.
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### site
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Type: `string (required)`
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The base URL to use when generating RSS item links. We recommend using `import.meta.env.SITE` to pull in the "site" from your project's astro.config. Still, feel free to use a custom base URL if necessary.
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### items
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Type: `RSSFeedItem[] | GlobResult (required)`
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Either a list of formatted RSS feed items or the result of [Vite's `import.meta.glob` helper](https://vitejs.dev/guide/features.html#glob-import). See [Astro's RSS items documentation](https://docs.astro.build/en/guides/rss/#generating-items) for usage examples to choose the best option for you.
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When providing a formatted RSS item list, see the `RSSFeedItem` type reference below:
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```ts
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type RSSFeedItem = {
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/** Link to item */
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link: string;
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/** Title of item */
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title: string;
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/** Publication date of item */
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pubDate: Date;
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/** Item description */
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description?: string;
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/** Append some other XML-valid data to this item */
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customData?: string;
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};
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```
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### stylesheet
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Type: `string (optional)`
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An absolute path to an XSL stylesheet in your project. If you don’t have an RSS stylesheet in mind, we recommend the [Pretty Feed v3 default stylesheet](https://github.com/genmon/aboutfeeds/blob/main/tools/pretty-feed-v3.xsl), which you can download from GitHub and save into your project's `public/` directory.
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### customData
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Type: `string (optional)`
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A string of valid XML to be injected between your feed's `<description>` and `<item>` tags. This is commonly used to set a language for your feed:
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```js
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import rss from '@astrojs/rss';
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export const get = () => rss({
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...
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customData: '<language>en-us</language>',
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});
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```
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### xmlns
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Type: `Record<string, string> (optional)`
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An object mapping a set of `xmlns` suffixes to strings of metadata on the opening `<rss>` tag.
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For example, this object:
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```js
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rss({
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...
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xmlns: { h: 'http://www.w3.org/TR/html4/' },
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})
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```
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Will inject the following XML:
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```xml
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<rss xmlns:h="http://www.w3.org/TR/html4/"...
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```
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---
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For more on building with Astro, [visit the Astro docs][astro-rss].
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[astro-rss]: https://docs.astro.build/en/guides/rss/#using-astrojsrss-recommended
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[astro-endpoints]: https://docs.astro.build/en/core-concepts/astro-pages/#non-html-pages
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