Fix Rubocop offenses

db/migrate/20140918063522_add_hashed_content_to_files.rb

@@ -6,7 +6,7 @@ class AddHashedContentToFiles < ActiveRecord::Migration[4.2]
 
     reversible do |direction|
       direction.up do
-        CodeOcean::File.unscope(:order).all.each(&:save)
+        CodeOcean::File.unscope(:order).find_each(&:save)
       end
     end
   end

db/migrate/20170830083601_add_cause_to_testruns.rb

@@ -4,7 +4,7 @@ class AddCauseToTestruns < ActiveRecord::Migration[4.2]
   def up
     add_column :testruns, :cause, :string
     Testrun.reset_column_information
-    Testrun.all.each do |testrun|
+    Testrun.find_each do |testrun|
       if testrun.submission.nil?
         say_with_time "#{testrun.id} has no submission"
       else

db/migrate/20180703125302_create_exercise_collection_items.rb

@@ -4,7 +4,7 @@ class CreateExerciseCollectionItems < ActiveRecord::Migration[4.2]
   def up
     rename_table :exercise_collections_exercises, :exercise_collection_items
     add_column :exercise_collection_items,  :position, :integer, default: 0, null: false
-    add_column :exercise_collection_items,  :id, :primary_key
+    add_column :exercise_collection_items,  :id, :primary_key # rubocop:disable Rails/DangerousColumnNames
   end
 
   def down

db/migrate/20181129093207_drop_errors.rb

@@ -24,7 +24,7 @@ class DropErrors < ActiveRecord::Migration[5.2]
     submissions_controller = SubmissionsController.new
 
     # Iterate only over those Errors containing a message and submission_id
-    CodeOcean::Error.where.not(message: [nil, '']).where.not(submission_id: [nil, '']).each do |error|
+    CodeOcean::Error.where.not(message: [nil, '']).where.not(submission_id: [nil, '']).find_each do |error|
       raw_output = error.message
       submission = Submission.find_by(id: error.submission_id)
 

db/migrate/20201019090123_add_normalized_score_and_submission_to_user_exercise_feedback.rb

@@ -7,7 +7,7 @@ class AddNormalizedScoreAndSubmissionToUserExerciseFeedback < ActiveRecord::Migr
 
     # Disable automatic timestamp modification
     ActiveRecord::Base.record_timestamps = false
-    UserExerciseFeedback.all.find_each do |uef|
+    UserExerciseFeedback.find_each do |uef|
       latest_submission = Submission
         .where(user_id: uef.user_id, user_type: uef.user_type, exercise_id: uef.exercise_id)
         .where('created_at < ?', uef.updated_at)

db/migrate/20210602071834_change_type_of_exposed_ports_in_execution_environment.rb

@@ -6,7 +6,7 @@ class ChangeTypeOfExposedPortsInExecutionEnvironment < ActiveRecord::Migration[6
     rename_column :execution_environments, :exposed_ports, :exposed_ports_migration
     add_column :execution_environments, :exposed_ports, :integer, array: true, default: [], nil: true
 
-    ExecutionEnvironment.all.each do |execution_environment|
+    ExecutionEnvironment.find_each do |execution_environment|
       next if execution_environment.exposed_ports_migration.nil?
 
       cleaned = execution_environment.exposed_ports_migration.scan(/\d+/)
@@ -21,7 +21,7 @@ class ChangeTypeOfExposedPortsInExecutionEnvironment < ActiveRecord::Migration[6
     rename_column :execution_environments, :exposed_ports, :exposed_ports_migration
     add_column :execution_environments, :exposed_ports, :string
 
-    ExecutionEnvironment.all.each do |execution_environment|
+    ExecutionEnvironment.find_each do |execution_environment|
       next if execution_environment.exposed_ports_migration.empty?
 
       list = execution_environment.exposed_ports_migration

db/migrate/20230819084917_unify_lti_parameters.rb

@@ -6,13 +6,13 @@ class UnifyLtiParameters < ActiveRecord::Migration[7.0]
       dir.up do
         # We cannot add a foreign key to a table that has rows that violate the constraint.
         LtiParameter.where(external_users_id: nil)
-          .or(LtiParameter.where.not(external_users_id: ExternalUser.all.select(:id)))
+          .or(LtiParameter.where.not(external_users_id: ExternalUser.select(:id)))
           .or(LtiParameter.where(exercises_id: nil))
-          .or(LtiParameter.where.not(exercises_id: Exercise.all.select(:id)))
+          .or(LtiParameter.where.not(exercises_id: Exercise.select(:id)))
           .delete_all
 
         # For each user/exercise pair, keep the most recent LtiParameter.
-        LtiParameter.all.group(:external_users_id, :exercises_id).having('count(*) > 1').count.each do |ids, count|
+        LtiParameter.group(:external_users_id, :exercises_id).having('count(*) > 1').count.each do |ids, count|
           LtiParameter.where(external_users_id: ids.first, exercises_id: ids.second).order(updated_at: :asc).limit(count - 1).delete_all
         end
         change_column :lti_parameters, :id, :bigint

db/migrate/20230821062901_add_foreign_keys_to_anomaly_notifications.rb

@@ -4,7 +4,7 @@ class AddForeignKeysToAnomalyNotifications < ActiveRecord::Migration[7.0]
   def change
     up_only do
       # We cannot add a foreign key to a table that has rows that violate the constraint.
-      AnomalyNotification.where.not(exercise_id: Exercise.all.select(:id)).delete_all
+      AnomalyNotification.where.not(exercise_id: Exercise.select(:id)).delete_all
     end
 
     change_column_null :anomaly_notifications, :contributor_id, false

db/migrate/20230821063101_convert_reason_to_json_in_anomaly_notifications.rb

@@ -2,7 +2,7 @@
 
 class ConvertReasonToJsonInAnomalyNotifications < ActiveRecord::Migration[7.0]
   def up
-    AnomalyNotification.where("reason LIKE '%value:%'").each do |anomaly_notification|
+    AnomalyNotification.where("reason LIKE '%value:%'").find_each do |anomaly_notification|
       reason = anomaly_notification.reason
       reason = reason.gsub('value:', '"value":')
       reason = reason.gsub(/"(\d+\.\d+)"/) {|_| Regexp.last_match(1) }