Add exercise title to statistics tooltip

app/assets/javascripts/exercise_collections.js.erb

@@ -56,6 +56,7 @@ $(function() {
         return {
           index: parseInt(key),
           exercise_id: parseInt(data[key]['exercise_id']),
+          exercise_title: data[key]['exercise_title'],
           working_time: parseFloat(data[key]['working_time'])
         };
       });
@@ -92,6 +93,7 @@ $(function() {
             .style("top", d3.event.pageY + 50 + "px")
             .style("display", "inline-block")
             .html("<%= I18n.t('activerecord.models.exercise.one') %> ID: " + d.exercise_id + "<br>" +
+              "<%= I18n.t('activerecord.attributes.exercise.title') %>: " + d.exercise_title + "<br>" +
               "<%= I18n.t('exercises.statistics.average_worktime') %>: " + d.working_time + "s");
         })
         .on("mouseout", function () {

app/models/exercise_collection.rb

@@ -6,19 +6,19 @@ class ExerciseCollection < ActiveRecord::Base
   has_many :exercises, through: :exercise_collection_items
   belongs_to :user, polymorphic: true
 
-  def exercise_working_times
-    working_times = {}
+  def collection_statistics
+    statistics = {}
     exercise_collection_items.each do |item|
-      working_times[item.position] = {exercise_id: item.exercise.id, working_time: time_to_f(item.exercise.average_working_time)}
+      statistics[item.position] = {exercise_id: item.exercise.id, exercise_title: item.exercise.title, working_time: time_to_f(item.exercise.average_working_time)}
     end
-    working_times
+    statistics
   end
 
   def average_working_time
     if exercises.empty?
       0
     else
-      values = exercise_working_times.values.reject { |o| o[:working_time].nil?}
+      values = collection_statistics.values.reject { |o| o[:working_time].nil?}
       sum = values.reduce(0) {|sum, item| sum + item[:working_time]}
       sum / values.size
     end

app/views/exercise_collections/statistics.html.slim

@@ -6,7 +6,7 @@ h1 = @exercise_collection
 = row(label: 'exercises.statistics.average_worktime', value: @exercise_collection.average_working_time.round(3).to_s + 's')
 
 #graph
-  #data.hidden(data-working-times=ActiveSupport::JSON.encode(@exercise_collection.exercise_working_times) data-average-working-time=@exercise_collection.average_working_time)
+  #data.hidden(data-working-times=ActiveSupport::JSON.encode(@exercise_collection.collection_statistics) data-average-working-time=@exercise_collection.average_working_time)
   #legend
     - {time: t('exercises.statistics.average_worktime'),
         min: 'min. anomaly threshold',