🦸 Intro to Facets

A facet is a way to group documents together based on a common value. For example, if you have a list of movies, you might want to group them by genre. You could then use the facet to filter the results to only show movies of a certain genre.

A common use case is to use facets to create a filter. You can see this in most e-commerce sites. For example, you will see a list of categories on the left side of the page, and each category will have a number next to it. This number represents the number of products in that category.

{
      "facet": {
        "operator": {
          "range": {
            "path": "year",
            "gte": 2000,
            "lte": 2015
          }
        },
        "facets": {
          "genresFacet": {
            "type": "string",
            "path": "genres"
          }
        }
      }
    }