Bid.get_delta_amount refactor

src/lib/db_models.rb

@@ -462,11 +462,14 @@ class Bid < EntityModel
 
 	def self.get_delta_amount(ahid, uid, amount)
 		data = self.get "*", "auction_id = ?, user_id = ?", ahid, uid
-		data && data.map! {|dat| self.new(dat)}
+		if data then 
-
+			data.map! {|dat| self.new(dat)}
-		p data
+			max_bid = data.max_by {|bid| bid.amount}
+			return amount - max_bid
+		else
 			return amount
 		end
+	end
 
 	def self.validate_bid(ahid, uid, amount, message)
 		ah = Auction.find_by_id ahid