Session I held on BADCamp 2012. Gives nice introduction to the facets in Drupal 7 with some code examples to extend it.

1. Facet API
Yuriy Gerasimov
email: yuri.gerasimov@gmail.com
twitter: ygerasimov
d.o.: http://drupal.org/user/257311

2. Advanced Search Forms
 Submit and hope for results

3. What are facets?
 Narrow search results
 Make sure items exist

4. What is Facet API?
 Create customizable facets
 Unified interface for all modules (search_api,
apachesolr, search_facetapi)
 Very nice API to extend/modify functionality based
on ctools plugins

5. Display widget
 Links
 Links with checkboxes
 Select (facetapi_bonus)

6. Sorts
Count sort
Display value sort

7. Dependencies
 Bundles, Roles, Another facet (facetapi_bonus)

8. Filters
 Remove some items from the facet links

9. Current search block

10. Writing your own widget

11. Custom sort (uasort)

12. Custom dependency

13. Custom filter

14. Current search element

15. Contrib modules
 Facet API Bonus
 Facet API Slider
 Facet API Translation
 Facet API Pretty Paths

16. Maintainer of Facet API

17. Facet API QA
Yuriy Gerasimov
email: yuri.gerasimov@gmail.com
twitter: ygerasimov
d.o.: http://drupal.org/user/257311