Will turn this snippet into a rake task

Solr Indexing in Batches

def index_in_batches(klass, criteria={}) 
  offset = 0 
  while true do 
    list = klass.all(criteria.merge(:limit => 30, :offset => offset)) 
    break if list.empty? 
    Sunspot.index(list)
    Sunspot.commit
    offset += 30
  end 
end