Is there any way to have one drop-down collection dependent on another
within a form? E.g.
<% form_for @lab, :html => { :multipart => true } do |f| %>
<td><%= f.collection_select :lab_desc_id,
LabDesc.find_main, :id, :name %></td>
<td><%= f.collection_select :unit_id,
LabDesc.units( ??? ), :id, :units %></td>
<% end %>
So that ??? "knows" the id that was chosen in the first
collection_select?
Many TIA,
Craig
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