switched license to agpl-3

[selectricity-live] / app / models / vote.rb

diff --git a/app/models/vote.rb b/app/models/vote.rb
index 7678f5463900034de67c6ff2dff60c2d281a059c..cc423110264b43edbefd6ff00e1ec2e9a2230ad6 100644 (file)
--- a/app/models/vote.rb
+++ b/app/models/vote.rb
@@ -1,3 +1,10 @@
+# Selectricity: Voting Machinery for the Masses
+# Copyright (C) 2007, 2008 Benjamin Mako Hill <mako@atdot.cc>
+# Copyright (C) 2007 Massachusetts Institute of Technology
+#
+# This program is free software. Please see the COPYING file for
+# details.
+
 class Vote < ActiveRecord::Base
   # relationships to other classes
   belongs_to :voter
@@ -7,13 +14,13 @@ class Vote < ActiveRecord::Base
   # callbacks
   after_update :save_rankings
   before_destroy :destroy_rankings
-
+  
   def to_s
     votes.join("")
   end
 
   def each
-    votes.each {|vote| yield vote}
+    self.votes.each {|vote| yield vote}
   end
 
   def votes
@@ -21,7 +28,7 @@ class Vote < ActiveRecord::Base
       if rankings.empty?
         @votes = Array.new
       else
-        @votes = rankings.sort.collect { |ranking| ranking.candidate.id }
+        @votes = self.rankings.sort.collect { |ranking| ranking.candidate.id }
       end
     end
 
@@ -33,14 +40,22 @@ class Vote < ActiveRecord::Base
   end
 
   def save_rankings
+    self.votes # i need to initalize this before destroying rankings
+               # or else the ranks themselves show up as nil
+
     destroy_rankings
-    self.votes.each_with_index do |candidate, index| 
+    self.votes.each_with_index do |candidate_id, index| 
       ranking = Ranking.new
       ranking.rank = index
-      ranking.candidate =  Candidate.find(candidate)
+      ranking.candidate =  Candidate.find(candidate_id)
       self.rankings << ranking
     end
   end
+  
+  def destroy
+    self.destroy_rankings
+    super
+  end
 
   def destroy_rankings 
     rankings.each { |ranking| ranking.destroy }
@@ -48,6 +63,7 @@ class Vote < ActiveRecord::Base
 
   def confirm!
     self.confirmed = 1
+    self.time = Time.now
     self.save
     
     unless self.voter.election.quickvote?
@@ -61,14 +77,24 @@ class Vote < ActiveRecord::Base
     confirmed == 1
   end
   
-  def votestring=(string="")
-    candidate_ids = voter.election.candidates.sort.collect \
-      { |candidate| candidate.id.to_i }
+  def votestring
+    # create a mapping of candidates ids and the relative order of the
+    # candidates as they appear when sorted alphabetically
+    cand_relnums = {}
+    self.voter.election.candidates.sort.each_with_index do |c, i|
+      cand_relnums[c.id] = i + 1
+    end
 
-    rel_votes = string.split("").collect { |vote| vote.to_i }
-    
-    # covert relative orders to absolute candidate ids
-    self.votes = rel_votes.collect { |vote| candidate_ids[ vote - 1 ] }
+    # assemble the votestring
+    self.votes.collect {|v| (cand_relnums[v] + 64).chr}.join("")
   end
 
+  # the following subroutine is used for quickvotes, but need for elections now
+  # too. It creates a vote with the candidates listed in order of preference 
+  # based on alphabetical order. Meant to be manipulated and then confirmed
+  def set_defaults!  
+    self.votes = self.voter.election.candidates.sort_by { rand }.collect {|c| c.id }
+    self.save
+  end
+         
 end