Setting Up Your First Collection

Module 4 · Section 3 of 9

Setting Up Your First Collection

Create the directory structure:

src/
└── content/
    ├── config.ts
    └── blog/
        └── first-post.md

The config.ts file defines your collection schema using Zod (Astro bundles it):

// src/content/config.ts
import { defineCollection, z } from 'astro:content';

const blog = defineCollection({
  type: 'content',
  schema: z.object({
    title: z.string(),
    description: z.string(),
    pubDate: z.date(),
    tags: z.array(z.string()).default([]),
    draft: z.boolean().default(false),
  }),
});

export const collections = { blog };

This schema enforces that every post has a title, description, and publication date. If frontmatter is missing or wrong, the build fails with a clear error rather than silently serving broken content.