The Apachesolr module (7.x) allows us to build sites that use powerful search technology. Besides being blazingly fast, Apachesolr has another advantage: faceted search.
Faceted search allows our search results to be filtered by defined criteria like category, date, author, location, or anything else that can come out of a field. We call these criteria facets. With facets, you can narrow down your search more and more until you get to the desired results.
Sometimes, however, the standard functionality is not enough. You might want or need to customize the way that facets work. This is controlled by Facet API. Unfortunately there is not much documentation for Facet API, and the API can be difficult to understand.
This post will change that!
In this post, you will learn how to use FacetAPI to create powerful custom faceted searches in Drupal 7. I will take a look at the UI of the module as well as its internals, so that we can define our own widgets, filters, and dependencies using some cool ctools features. Read More >>>