Grouping Taxonomy terms by their parents I have a Taxonomy Vocabulary for all types of cars. It has the following hierarchy:

Main Brand 1
- Sub0
- Sub1
- Sub3
Main Brand 2
- Sub1
- Sub2


and so on...

I want to have a webpage that displays the sub items when the main brand is selected.

Also, is there a way when assigning a specific value for the main brand field in my content type, for another field to appear populated by the sub brands of the main field?
Hope I'm not too late, but maybe others will find this helpful...

If I'm understanding the question correctly, this is what you do:


Add two taxonomy name fields to your view display—one excluded from display, the other not.
Add a relationship of "Taxonomy term: Parent term" (under Advanced) and then attach it to the field excluded from display.
Under in the view's format settings, group by the excluded field with the relationship.


Note: If the parent terms are being printed twice (not just as group headers), make sure you excluded the field with the relationship and check "Require this relationship" in the relationship settings.

I don't know if this works with tertiary+ levels. Probably not. In which case there's most likely a module.