#What is the recommended way to add routes to tag archives?

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carmine grotto
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In WordPress and other SSGs it's common to tag posts inside a blog collection with topic names, similar to hashtags. What is the recommended way to create one page for each tag listing blog posts that have that tag in their frontmatter's tags field? The solution should work for a blog with i18n settings supporting multiple languages.

pale rootBOT
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Hi @carmine grotto. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

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Astro provides a way to create dynamic routes for your blog posts, including those tagged with specific topics. Here's a general approach based on the information provided in the extracts:

  1. Create a dynamic route for your tags: In Astro, you can create dynamic routes by using file names with square brackets. For example, you could create a file named [tag].astro in your pages directory. This file will be used to generate a page for each unique tag.

  2. Fetch the posts for each tag: Inside your [tag].astro file, you can use the Astro.fetchContent() function to fetch all blog posts. Then, you can filter these posts based on the current tag. The current tag can be accessed through the Astro.params object.

  3. Display the posts: Once you have the posts for the current tag, you can display them on the page as you see fit.

For internationalization (i18n), Astro provides built-in support starting from version 3.5.0. You can define your locales in your Astro configuration and organize your content folders by locale. Astro's i18n routing allows you to add your multilingual content with support for configuring a default language, computing relative page URLs, and accepting preferred languages provided by your visitor’s browser. You can also specify fallback languages on a per-language basis.

Here's an example of how you can configure i18n in your Astro configuration:

import { defineConfig } from "astro/config"
export default defineConfig({
 i18n: {
 defaultLocale: "en",
 locales: ["en", "es", "pt-br"]
 }
})

You can then organize your content folders by locale. For example:

├── src
│ ├── pages
│ │ ├── about.astro
│ │ ├── index.astro
│ │ ├── es
│ │ │ ├── about.astro
│ │ │ ├── index.astro
│ │ ├── pt-br
│ │ │ ├── about.astro
│ │ │ ├── index.astro
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Astro's i18n routing also provides helper functions like getRelativeLocaleUrl to compute relative URLs for your links.

Please note that this is a general approach and you might need to adjust it based on your specific needs and project structure. For more detailed information, you can refer to Astro's documentation on routing (https://docs.astro.build/en/core-concepts/routing/#static-routes) and internationalization (https://docs.astro.build/en/guides/internationalization/).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

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