stacking.rb

stacking_search = params[:search_modifier]
if stacking_search
  original = session[:last_query]
  fresh = query
  join = "AND"
  join = "OR" if params[:search_modifier] == "expand"
  query = ["( #{original.shift} ) #{join} ( #{fresh.shift} )"] + (original + fresh)
  # this is a useful spot for a debugger if we need to inspect the joined query
  # debugger
end
session[:last_query] = query