gistfile1.html

.zone_selection
  = grouped_collection_select(:event, :zone_id, @locations, :zones, :name, :id, :name, {:selected => "50463aa79438a08e45000037"})
= params

# Generates the following HTML

<div class='zone_selection'>
   <select id="event_zone_id" name="event[zone_id]"><optgroup label="Roman&#x27;s Home"><option value="50463aa79438a08e45000001">Garden Side</option>
     <option value="50463aa79438a08e4500000a">Doorbell</option>
     <option value="50463aa79438a08e45000037">Entrance (Front)</option>
     <option value="50463aa79438a08e4500000e">Garden Wide</option>
     <option value="5058d28f9438a0f14f000062">Test Zone</option></optgroup><optgroup label="Roman&#x27;s Car"><option value="505882249438a0f14f000039">Audi A4</option></optgroup></select>
</div>

# Why does the option with Entrance (Front) not have a selected=selected attribute?