In a discussion on the main site- http://drupal.org/node/256913 it has been hinted that there is a module available to automatically do this:
When the user selects a taxonomy term to search, and that term is in a hierarchical vocabulary, automatically search the children of the term, to some predefined depth
I.e. when the user clicks on a link for "/taxonomy/term/tid" the system actually performs "/taxonomy/term/tid/1", or "/taxonomy/term/tid/all".
I've also seen another approach using views- http://growingventuresolutions.com/about/tutorials-and-screencasts/hacka...
The use case is defining a geographical taxonomy, then ensuring that when a user selects (say) "England", they also find anything tagged "Somerset", because Somerset is a subterm of England.
I'm ploughing through the taxonomy-related modules at the moment, but not seeing the module referred to. Can a taxonomy guru point me in the right direction, or give some insight on whether the views-based approach is better/worse?
Comments
Taxonomy Force All
http://drupal.org/project/taxonomy_forceall
You may also be interested in other ways of browsing taxonomies by using uBrowser, Hierarchical Select or Faceted Search.
http://drupal.org/project/ubrowser
http://drupal.org/project/hierarchical_select
http://drupal.org/project/faceted_search