Extract WORKING_TIME_DELTA to be used globally and set it to 5 min.

app/controllers/execution_environments_controller.rb

@@ -40,7 +40,7 @@ class ExecutionEnvironmentsController < ApplicationController
       FROM
         (SELECT user_id,
                 exercise_id,
-                CASE WHEN working_time >= '0:05:00' THEN '0' ELSE working_time END AS working_time_new
+                CASE WHEN working_time >= #{StatisticsHelper::WORKING_TIME_DELTA_IN_SQL_INTERVAL} THEN '0' ELSE working_time END AS working_time_new
          FROM
             (SELECT user_id,
                     exercise_id,

app/controllers/exercises_controller.rb

@@ -343,7 +343,7 @@ class ExercisesController < ApplicationController
       @all_events = (@submissions + interventions).sort_by { |a| a.created_at }
       @deltas = @all_events.map.with_index do |item, index|
         delta = item.created_at - @all_events[index - 1].created_at if index > 0
-        if delta == nil or delta > 10 * 60 then 0 else delta end
+        if delta == nil or delta > StatisticsHelper::WORKING_TIME_DELTA_IN_SECONDS then 0 else delta end
       end
       @working_times_until = []
       @all_events.each_with_index do |_, index|

app/controllers/external_users_controller.rb

@@ -27,7 +27,7 @@ class ExternalUsersController < ApplicationController
               score,
               id,
               CASE
-                  WHEN working_time >= '0:05:00' THEN '0'
+                  WHEN working_time >= #{StatisticsHelper::WORKING_TIME_DELTA_IN_SQL_INTERVAL} THEN '0'
                   ELSE working_time
               END AS working_time_new
        FROM

app/helpers/statistics_helper.rb

@@ -1,5 +1,8 @@
 module StatisticsHelper
 
+  WORKING_TIME_DELTA_IN_SECONDS = 5.minutes
+  WORKING_TIME_DELTA_IN_SQL_INTERVAL = "'0:05:00'" # yes, a string with quotes
+
   def statistics_data
     [
         {

app/models/exercise.rb

@@ -76,7 +76,7 @@ class Exercise < ApplicationRecord
         (SELECT user_id,
                 user_type,
                 score,
-                CASE WHEN working_time >= '0:05:00' THEN '0' ELSE working_time END AS working_time_new
+                CASE WHEN working_time >= #{StatisticsHelper::WORKING_TIME_DELTA_IN_SQL_INTERVAL} THEN '0' ELSE working_time END AS working_time_new
          FROM
             (SELECT user_id,
                     user_type,
@@ -180,7 +180,7 @@ class Exercise < ApplicationRecord
                     exercise_id,
                     max_score,
                     CASE
-                           WHEN working_time >= '0:05:00' THEN '0'
+                           WHEN working_time >= #{StatisticsHelper::WORKING_TIME_DELTA_IN_SQL_INTERVAL} THEN '0'
                            ELSE working_time
                     END AS working_time_new
              FROM   all_working_times_until_max ), result AS
@@ -274,7 +274,7 @@ class Exercise < ApplicationRecord
 
         FILTERED_TIMES_UNTIL_MAX AS
         (
-        SELECT user_id,exercise_id, max_score, CASE WHEN working_time >= '0:05:00' THEN '0' ELSE working_time END AS working_time_new
+        SELECT user_id,exercise_id, max_score, CASE WHEN working_time >= #{StatisticsHelper::WORKING_TIME_DELTA_IN_SQL_INTERVAL} THEN '0' ELSE working_time END AS working_time_new
         FROM ALL_WORKING_TIMES_UNTIL_MAX
         )
             SELECT e.external_id AS external_user_id, f.user_id, exercise_id, MAX(max_score) AS max_score, sum(working_time_new) AS working_time

app/views/exercises/external_users/statistics.html.slim

@@ -58,7 +58,7 @@ h1 = "#{@exercise} (external user #{@external_user})"
                 td =
                 td =
                 td = @working_times_until[index] if index > 0
-    p = t('.addendum')
+    p = t('.addendum', delta: StatisticsHelper::WORKING_TIME_DELTA_IN_SECONDS / 60)
     .d-none#wtimes data-working_times=ActiveSupport::JSON.encode(@working_times_until);
     div#progress_chart.col-lg-12
       .graph-functions-2

config/locales/de.yml

@@ -378,7 +378,7 @@ de:
         score: Punktzahl
         tests: Unit Tests
         time_difference: 'Arbeitszeit bis hier*'
-        addendum: '* Differenzen von mehr als 10 Minuten werden ignoriert.'
+        addendum: '* Differenzen von mehr als %{delta} Minuten werden ignoriert.'
   proxy_exercises:
       index:
         clone: Duplizieren

config/locales/en.yml

@@ -378,7 +378,7 @@ en:
         score: Score
         tests: Unit Test Results
         time_difference: 'Working Time until here*'
-        addendum: '* Deltas longer than 10 minutes are ignored.'
+        addendum: "* Deltas longer than %{delta} minutes are ignored."
   proxy_exercises:
       index:
         clone: Duplicate