Merge head

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

diff --git a/app/models/election.rb b/app/models/election.rb
index 61286e1c1829c00e5880dacffda74370de7033bb..a77f4457bb581fba8588e1cf7ee479932851f409 100644 (file)
--- a/app/models/election.rb
+++ b/app/models/election.rb
@@ -2,16 +2,50 @@ class Election < ActiveRecord::Base
   has_many :candidates
   has_many :voters
   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 other_methods
+    if election_method
+      @other_methods = ELECTION_TYPES.reject {|i| i == election_method}
+    else
+      @other_methods = nil
+    end
+    @other_methods
+  end
 
   def startdate
-    read_attribute( :startdate ) || DateTime.now
+    read_attribute( :startdate ) || Time.now
   end
 
-  def enddate
-    read_attribute( :enddate ) || DateTime.now + 14
+  def enddate=(date)
+    date += 1.day
+    date = Time.gm(*date)
+    super(date)
+  end
+
+  def votes
+    votes = Array.new
+    self.voters.each do |voter|
+      votes << voter.vote
+    end
+    return votes
   end
 
   def destroy
@@ -20,5 +54,88 @@ class Election < ActiveRecord::Base
     end
     super
   end
+
+  def start_blockers
+    reasons = []
+    if self.candidates.length <= 1
+      reasons << "You must have at least two candidates."
+    end
+    
+    if self.voters.length <= 1
+      reasons << "You must have at least two voters."
+    end
+
+    reasons
+  end
+
+  def activate!
+    self.active = 1
+    self.save!
+  end
+  
+  def quickvote?
+    self.class == 'QuickVote'
+  end
+
+  def active?
+    active == 1
+  end 
+
+  def done?
+    active == 2
+  end
+
+  def shortdesc
+    shortdesc = description.split(/\n/)[0]
+  end
+
+  def longdesc
+    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
+
+