projects.mako.cc - selectricity-live/blob - app/models/vote.rb

   1 class Vote < ActiveRecord::Base
   2   belongs_to :voter
   3   has_many :rankings
   4
   5   def initialize
   6     super
   7     @votes = []
   8   end
   9
  10   def votestring=(string="")
  11     rel_votes = string.split("").collect { |vote| vote.to_i }
  12
  13     # covert relative orders to absolute candidate ids
  14     candidate_ids = voter.election.candidates.sort
  15     candidate_ids.collect! { |candidate| candidate.id.to_i }
  16
  17     rel_votes.collect! { |vote| candidate_ids[ vote - 1 ] }
  18     @votes = rel_votes
  19   end
  20
  21   def save
  22     rankings.each { destroy } unless rankings.empty?
  23     @votes.each_with_index do |candidate, index|
  24       ranking = Ranking.new
  25       ranking.rank = index + 1
  26       ranking.candidate =  Candidate.find(candidate)
  27       self.rankings << ranking
  28     end
  29
  30     super
  31   end
  32
  33   def destroy
  34     rankings.each { destroy }
  35     super
  36   end
  37
  38 end