family_controller.rb

# in app/controllers/family_controller.rb
#
# find out if there is prize remained to draw
prize_remained_count = 65 - Lotterywinner.where(:prize_id => 1).size if pid == 1					
prize_remained_count =  0 if pid == 2
prize_remained_count =  0 if pid == 3
prize_remained_count =  0 if pid == 4					

if @user.puzzlepieces.where(:puzzle_id => pid).map(&:position_number).uniq.size == 8
	if (cur<<position_number).uniq.size == 9 && prize_remained_count > 0  # important
		position_number = [1,1,1,1,1,1,1,1,1,2,2,2,3,4,5,5,5,6,7,8,9].sample(1).first
		position_number = [1,2,3,4,5,6,7,8,9].sample(1).first if pid == 1
	else
		position_number = cur.pop.sample(1).first 
	end
end