Query Variables

query GetBlogPosts(
  $limit: Int
  $filter: MarkdownRemarkFilterInput
  $sort: MarkdownRemarkSortInput
) {
  allMarkdownRemark(limit: $limit, filter: $filter, sort: $sort) {
    edges {
      node {
        frontmatter {
          title
          date(formatString: "dddd DD MMMM YYYY")
        }
      }
    }
  }
}

In addition to adding query arguments directly to queries, GraphQL allows to pass in "query variables". These can be both simple scalar values as well as objects.

The query below is the same one as the previous example, but with the input arguments passed in as "query variables".

To add variables to page component queries, pass these in the context object when creating pages.