I will try to keep the question simple and short. I have (Drupal 7):
a Vocabulary "Country regions" (depth 1 level):
a Content type "Regional development programs" with a "Applies to:" field on this vocabulary, a terms multi-select field.
a View with an URL argument (a region) - contextual filter.
I'm trying to build a View to show all "Regional development programs" that use the parent of the given region.
I want to retrieve all programs that apply to Liege (given argument), which is easy, BUT I also need all programs that apply to the region parent, which is Belgium (because, of course, all Belgium programs apply to its regions as well).
Sorry if the solution is already given in another question, but I couldn't find a similar question (I found several questions for getting the children of an argument, but not for the parent).
Thanks a lot!