Support for multiple Hierarchical Select instances in the same form

Technologies
Drupal
Hierarchical Select
PHP
Time range
Client
PingV
As a
freelancer

Drupal 7’s client-side (JavaScript) settings (Drupal.settings) merging only supports merging of single-level settings, whereas Hierarchical Select was using multiple levels. This caused problems if a new Hierarchical Select instance was added in an AJAX callback.