title: find all children of an object tagged with acts_as_taggable_on
body: <p>I have a rails site with two models: events and dates </p>
  
  <p>events has many dates</p>
  
  <p>events are tagged using acts_as_taggable_on </p>
  
  <p>I'm trying to find all dates (chronological order) for events tagged with a specific tag.  I can figure out how to get all the tagged events, but I can't figure out how to get all of the dates.</p>
  
  <p>The end result I'm looking for is to create a calendar of similar events where events appear on each of their dates.</p>
  
  <p>Hopefully that makes sense, thanks for any and all input!</p>