Load the list dynamically in drupal 7 based on the value selected in another list

Question

Being new to drupal 7, I have the following requirement: I have a drop-down list (a list in drupal) based on the selected item in this business list, which must be populated with another list in which the user must be populated, as well as another the list branch that is in the field collection, depending on the value selected in the drop-down menu.

Thank you in advance

Answer 1

Try Hierarchical Choice .

Demos .

This module defines the form element "hierarchical_select", which is a significantly improved way to allow the user to select elements in the hierarchy.

Update

Another option. Simple hierarchical selection.