GatsbyCentral / gatsby-plugin-remark-collection

A Gatsby plugin which adds the filesystem collection name to Markdown nodes as a field

Gatsby Plugin Remark Collection

If you use multiple gatsby-source-filesystem definitions to load multiple directories of content, how can you request just one directory in Gatsby? You can use a RegEx on the file system path. Ugly. This plugin adds a "field" called "colllection" which simply copies the value from the File node to the MarkdownRemark node.

Example gatsby-config.js:

{
  resolve: "gatsby-source-filesystem",
  options: {
    name: "posts",
    path: `${__dirname}/content/posts`
  }
},
{
  resolve: "gatsby-source-filesystem",
  options: {
    name: "tutorials",
    path: `${__dirname}/content/tutorials`
  }
},

Now you can query for these specifically like so:

posts: allMarkdownRemark(
  filter: { fields: { collection: { eq: "posts" } } }
  sort: { fields: [frontmatter___date], order: DESC }
) {
  edges {
    node {
      id
      frontmatter {
        title
        path
        tags
      }
    }
  }
}
tutorials: allMarkdownRemark(
  filter: { fields: { collection: { eq: "tutorials" } } }
) {
  edges {
    node {
      id
      frontmatter {
        title
        path
      }
    }
  }
}

The field collection was added by this plugin.