Update app/models/exercise.rb

Co-Authored-By: rteusner <ralf.teusner@hpi.de>
2019-03-29 16:00:58 +01:00
parent baec777e48
commit 5958523fdb
1 changed files with 8 additions and 0 deletions
--- a/app/models/exercise.rb
+++ b/app/models/exercise.rb
@ -50,6 +50,14 @@ class Exercise < ApplicationRecord
    end
  end
  
+  def finishers_percentage
+    if users.distinct.count != 0
+      (100.0 / users.distinct.count * finishers.count).round(2)
+    else
+      0
+    end
+  end
+
  def average_score
    if submissions.exists?(cause: 'submit')
      maximum_scores_query = submissions.select('MAX(score) AS maximum_score').group(:user_id).to_sql.sub('$1', id.to_s)