Merge trunk

[selectricity] / app / models / election.rb

diff --git a/app/models/election.rb b/app/models/election.rb
index 0907e68a4cfc7e5796ef9920bbfca09a4b0cd0bd..a77f4457bb581fba8588e1cf7ee479932851f409 100644 (file)
--- a/app/models/election.rb
+++ b/app/models/election.rb
@@ -4,16 +4,34 @@ class Election < ActiveRecord::Base
   has_many :votes
   belongs_to :user
   validates_presence_of :name, :description
-
+  
+  #validate that method is one of the listed election types
+  
+  attr_reader :plurality_result
+  attr_reader :approval_result
+  attr_reader :condorcet_result
+  attr_reader :ssd_result
+  attr_reader :borda_result
+  
   require 'date'
+  
+  def initialize(params={})
+    super
+    self.enddate = read_attribute( :enddate ) || \
+                   Time.now + 14.days - 1.second
+  end
 
-  def startdate
-    read_attribute( :startdate ) || Time.now
+  def other_methods
+    if election_method
+      @other_methods = ELECTION_TYPES.reject {|i| i == election_method}
+    else
+      @other_methods = nil
+    end
+    @other_methods
   end
 
-  def enddate
-    date = read_attribute( :enddate ) || Time.now + 14
-    date - 1.second
+  def startdate
+    read_attribute( :startdate ) || Time.now
   end
 
   def enddate=(date)
@@ -22,6 +40,14 @@ class Election < ActiveRecord::Base
     super(date)
   end
 
+  def votes
+    votes = Array.new
+    self.voters.each do |voter|
+      votes << voter.vote
+    end
+    return votes
+  end
+
   def destroy
     self.candidates.each do |candidate|
       candidate.destroy
@@ -31,7 +57,6 @@ class Election < ActiveRecord::Base
 
   def start_blockers
     reasons = []
-    
     if self.candidates.length <= 1
       reasons << "You must have at least two candidates."
     end
@@ -49,7 +74,7 @@ class Election < ActiveRecord::Base
   end
   
   def quickvote?
-    quickvote.to_i == 1
+    self.class == 'QuickVote'
   end
 
   def active?
@@ -68,4 +93,49 @@ class Election < ActiveRecord::Base
     longdesc = description.split(/\n/)[1..-1].join("")
     longdesc.length > 0 ? longdesc : nil 
   end
+  
+  #Calculate Election Results
+  def results
+    # initalize the tallies to empty arrays
+    preference_tally = Array.new
+    plurality_tally = Array.new
+    approval_tally = Array.new
+
+    self.voters.each do |voter|
+      # skip if the voter has not voted or has an unconfirmed vote
+      next unless voter.voted?
+
+      plurality_tally << voter.vote.rankings.sort[0].candidate.id
+      approval_tally << voter.vote.rankings.sort[0..1].collect \
+        { |ranking| ranking.candidate.id }
+      preference_tally << voter.vote.rankings.sort.collect \
+        { |ranking| ranking.candidate.id }
+    end
+    
+    @plurality_result = PluralityVote.new(plurality_tally).result
+    @approval_result = ApprovalVote.new(approval_tally).result
+    @condorcet_result = PureCondorcetVote.new(preference_tally).result
+    @ssd_result = CloneproofSSDVote.new(preference_tally).result
+    @borda_result = BordaVote.new(preference_tally).result
+    
+    { 'plurality' => @plurality_result,
+      'approval' => @approval_result,
+      'condorcet' => @condorcet_result,
+      'ssd' => @ssd_result,
+      'borda' => @borda_result }
+    end
+  
+  def names_by_id
+    names = Hash.new
+    
+    competitors = self.candidates.sort.collect {|candidate| candidate.id}
+    competitors.each do |candidate|
+      names[candidate] = Candidate.find(candidate).name
+    end
+    
+    names
+  end
+  
 end
+
+