Add migration version to all prior db migrations

db/migrate/20110819224757_devise_create_users.rb

@@ -1,4 +1,4 @@
-class DeviseCreateUsers < ActiveRecord::Migration
+class DeviseCreateUsers < ActiveRecord::Migration[4.2]
   def self.up
     create_table(:users) do |t|
       ## Database authenticatable

db/migrate/20110820005833_create_test_cases.rb

@@ -1,4 +1,4 @@
-class CreateTestCases < ActiveRecord::Migration
+class CreateTestCases < ActiveRecord::Migration[4.2]
   def self.up
     create_table :test_cases do |t|
       t.text :input

db/migrate/20110820010205_create_problems.rb

@@ -1,4 +1,4 @@
-class CreateProblems < ActiveRecord::Migration
+class CreateProblems < ActiveRecord::Migration[4.2]
   def self.up
     create_table :problems do |t|
       t.string :title, limit: 255

db/migrate/20110820013719_create_submissions.rb

@@ -1,4 +1,4 @@
-class CreateSubmissions < ActiveRecord::Migration
+class CreateSubmissions < ActiveRecord::Migration[4.2]
   def self.up
     create_table :submissions do |t|
       t.text :source

db/migrate/20110904033519_create_contest_relations.rb

@@ -1,4 +1,4 @@
-class CreateContestRelations < ActiveRecord::Migration
+class CreateContestRelations < ActiveRecord::Migration[4.2]
   def self.up
     create_table :contest_relations do |t|
       t.integer :user_id

db/migrate/20110904033742_create_contests.rb

@@ -1,4 +1,4 @@
-class CreateContests < ActiveRecord::Migration
+class CreateContests < ActiveRecord::Migration[4.2]
   def self.up
     create_table :contests do |t|
       t.string :title, limit: 255

db/migrate/20110904045150_create_contests_problems_table.rb

@@ -1,4 +1,4 @@
-class CreateContestsProblemsTable < ActiveRecord::Migration
+class CreateContestsProblemsTable < ActiveRecord::Migration[4.2]
   def self.up
     create_table :contests_problems, id: false do |t|
       t.integer :contest_id

db/migrate/20110924030742_create_groups.rb

@@ -1,4 +1,4 @@
-class CreateGroups < ActiveRecord::Migration
+class CreateGroups < ActiveRecord::Migration[4.2]
   def self.up
     create_table :groups do |t|
       t.string :name, limit: 255

db/migrate/20110924035337_create_group_user_table.rb

@@ -1,4 +1,4 @@
-class CreateGroupUserTable < ActiveRecord::Migration
+class CreateGroupUserTable < ActiveRecord::Migration[4.2]
   def self.up
     create_table :groups_users, id: false do |t|
       t.integer :group_id

db/migrate/20110925021620_create_group_problem_table.rb

@@ -1,4 +1,4 @@
-class CreateGroupProblemTable < ActiveRecord::Migration
+class CreateGroupProblemTable < ActiveRecord::Migration[4.2]
   def self.up
     create_table :groups_problems, id: false do |t|
       t.integer :group_id

db/migrate/20111002021523_create_contest_group_table.rb

@@ -1,4 +1,4 @@
-class CreateContestGroupTable < ActiveRecord::Migration
+class CreateContestGroupTable < ActiveRecord::Migration[4.2]
   def self.up
     create_table :contests_groups, id: false do |t|
       t.integer :contest_id

db/migrate/20111022023246_add_judge_output_to_submissions.rb

@@ -1,4 +1,4 @@
-class AddJudgeOutputToSubmissions < ActiveRecord::Migration
+class AddJudgeOutputToSubmissions < ActiveRecord::Migration[4.2]
   def self.up
     add_column :submissions, :judge_output, :text
   end

db/migrate/20111206102437_add_brownie_points_to_users.rb

@@ -1,4 +1,4 @@
-class AddBrowniePointsToUsers < ActiveRecord::Migration
+class AddBrowniePointsToUsers < ActiveRecord::Migration[4.2]
   def self.up
     add_column :users, :brownie_points, :integer, default: 0
   end

db/migrate/20120109132817_add_evaluator_to_problem.rb

@@ -1,4 +1,4 @@
-class AddEvaluatorToProblem < ActiveRecord::Migration
+class AddEvaluatorToProblem < ActiveRecord::Migration[4.2]
   def self.up
     add_column :problems, :evaluator, :text
   end

db/migrate/20120111090946_add_name_to_user.rb

@@ -1,4 +1,4 @@
-class AddNameToUser < ActiveRecord::Migration
+class AddNameToUser < ActiveRecord::Migration[4.2]
   def self.up
     add_column :users, :name, :string, limit: 255
   end

db/migrate/20120115015112_create_contests_max_score_submissions_view.rb

@@ -1,4 +1,4 @@
-class CreateContestsMaxScoreSubmissionsView < ActiveRecord::Migration
+class CreateContestsMaxScoreSubmissionsView < ActiveRecord::Migration[4.2]
   def self.up
     case ActiveRecord::Base.connection.adapter_name
     when "SQLite"

db/migrate/20120115020222_create_contests_latest_submissions_view.rb

@@ -1,4 +1,4 @@
-class CreateContestsLatestSubmissionsView < ActiveRecord::Migration
+class CreateContestsLatestSubmissionsView < ActiveRecord::Migration[4.2]
   def self.up
     case ActiveRecord::Base.connection.adapter_name
     when "SQLite"

db/migrate/20120115044124_create_contests_max_score_scoreboard_view.rb

@@ -1,4 +1,4 @@
-class CreateContestsMaxScoreScoreboardView < ActiveRecord::Migration
+class CreateContestsMaxScoreScoreboardView < ActiveRecord::Migration[4.2]
   def self.up
     case ActiveRecord::Base.connection.adapter_name
     when "SQLite"

db/migrate/20120115044140_create_contests_latest_scoreboard_view.rb

@@ -1,4 +1,4 @@
-class CreateContestsLatestScoreboardView < ActiveRecord::Migration
+class CreateContestsLatestScoreboardView < ActiveRecord::Migration[4.2]
   def self.up
     case ActiveRecord::Base.connection.adapter_name
     when "SQLite"

db/migrate/20120115050204_create_contests_count_submissions_view.rb

@@ -1,4 +1,4 @@
-class CreateContestsCountSubmissionsView < ActiveRecord::Migration
+class CreateContestsCountSubmissionsView < ActiveRecord::Migration[4.2]
   def self.up
     execute "CREATE VIEW contests_count_submissions AS SELECT contest_relations.contest_id, submissions.user_id, submissions.problem_id, COUNT(*) AS count FROM contests JOIN contest_relations ON contests.id = contest_relations.contest_id JOIN contests_problems ON contests_problems.contest_id = contests.id JOIN submissions ON contest_relations.user_id = submissions.user_id AND submissions.problem_id = contests_problems.problem_id WHERE submissions.created_at BETWEEN contests.start_time AND contests.end_time GROUP BY contest_relations.contest_id, submissions.user_id, submissions.problem_id;"
   end

db/migrate/20120117133515_add_indexes_id_fields.rb

@@ -1,4 +1,4 @@
-class AddIndexesIdFields < ActiveRecord::Migration
+class AddIndexesIdFields < ActiveRecord::Migration[4.2]
   # indexes designed to allow fast table joins, eg. when
   #   - getting users competing in a contest
   #   - getting the contests a user has competed in

db/migrate/20120119025544_create_problem_sets.rb

@@ -1,4 +1,4 @@
-class CreateProblemSets < ActiveRecord::Migration
+class CreateProblemSets < ActiveRecord::Migration[4.2]
   def self.up
     create_table :problem_sets do |t|
       t.string :title, limit: 255

db/migrate/20120119081526_remove_problems_contests_groups.rb

@@ -1,4 +1,4 @@
-class RemoveProblemsContestsGroups < ActiveRecord::Migration
+class RemoveProblemsContestsGroups < ActiveRecord::Migration[4.2]
   def self.up
     drop_table :contests_problems
     drop_table :groups_problems

db/migrate/20120122061329_create_roles.rb

@@ -1,4 +1,4 @@
-class CreateRoles < ActiveRecord::Migration
+class CreateRoles < ActiveRecord::Migration[4.2]
   def self.up
     create_table :roles do |t|
       t.string :name, limit: 255

db/migrate/20120127063021_add_username_to_users.rb

@@ -1,4 +1,4 @@
-class AddUsernameToUsers < ActiveRecord::Migration
+class AddUsernameToUsers < ActiveRecord::Migration[4.2]
   def self.up
     add_column :users, :username, :string, limit: 255
     add_column :users, :can_change_username, :boolean, default: true, null: false

db/migrate/20120128000525_create_settings.rb

@@ -1,4 +1,4 @@
-class CreateSettings < ActiveRecord::Migration
+class CreateSettings < ActiveRecord::Migration[4.2]
   def self.up
     create_table :settings do |t|
       t.string :key, limit: 255

db/migrate/20120128235138_create_evaluators.rb

@@ -1,4 +1,4 @@
-class CreateEvaluators < ActiveRecord::Migration
+class CreateEvaluators < ActiveRecord::Migration[4.2]
   def self.up
     create_table :evaluators do |t|
       t.string :name, limit: 255, unique: true, null: false

db/migrate/20120131100212_add_user_to_group.rb

@@ -1,4 +1,4 @@
-class AddUserToGroup < ActiveRecord::Migration
+class AddUserToGroup < ActiveRecord::Migration[4.2]
   def self.up
     add_column :groups, :user_id, :integer
     execute "UPDATE groups SET user_id = 35;"

db/migrate/20120201080849_add_title_index_to_problem.rb

@@ -1,4 +1,4 @@
-class AddTitleIndexToProblem < ActiveRecord::Migration
+class AddTitleIndexToProblem < ActiveRecord::Migration[4.2]
   def self.up
     case ActiveRecord::Base.connection.adapter_name
     when "SQLite"

db/migrate/20120201113029_add_sessions_table.rb

@@ -1,4 +1,4 @@
-class AddSessionsTable < ActiveRecord::Migration
+class AddSessionsTable < ActiveRecord::Migration[4.2]
   def self.up
     create_table :sessions do |t|
       t.string :session_id, limit: 255, null: false

db/migrate/20120202100212_add_created_at_index_to_sessions.rb

@@ -1,4 +1,4 @@
-class AddCreatedAtIndexToSessions < ActiveRecord::Migration
+class AddCreatedAtIndexToSessions < ActiveRecord::Migration[4.2]
   def self.up
     add_index :sessions, :created_at
   end

db/migrate/20120208061444_add_avatar_to_user.rb

@@ -1,4 +1,4 @@
-class AddAvatarToUser < ActiveRecord::Migration
+class AddAvatarToUser < ActiveRecord::Migration[4.2]
   def self.up
     add_column :users, :avatar, :string, limit: 255
   end

db/migrate/20120210235859_create_test_sets.rb

@@ -1,4 +1,4 @@
-class CreateTestSets < ActiveRecord::Migration
+class CreateTestSets < ActiveRecord::Migration[4.2]
   def up
     create_table :test_sets do |t|
       t.integer :problem_id

db/migrate/20120610045635_add_debug_to_submission.rb

@@ -1,4 +1,4 @@
-class AddDebugToSubmission < ActiveRecord::Migration
+class AddDebugToSubmission < ActiveRecord::Migration[4.2]
   def change
     add_column :submissions, :debug_output, :text
   end

db/migrate/20120805020042_add_confirmable_to_users.rb

@@ -1,4 +1,4 @@
-class AddConfirmableToUsers < ActiveRecord::Migration
+class AddConfirmableToUsers < ActiveRecord::Migration[4.2]
   def change
     add_column :users, :confirmation_token, :string, limit: 255
     add_column :users, :confirmed_at, :datetime

db/migrate/20120805021508_make_existing_emails_unconfirmed_in_users.rb

@@ -1,4 +1,4 @@
-class MakeExistingEmailsUnconfirmedInUsers < ActiveRecord::Migration
+class MakeExistingEmailsUnconfirmedInUsers < ActiveRecord::Migration[4.2]
   def up
     User.find_each do |user|
       if user[:unconfirmed_email].nil?

db/migrate/20120805105347_send_confirmation_instructions_to_all_users.rb

@@ -1,4 +1,4 @@
-class SendConfirmationInstructionsToAllUsers < ActiveRecord::Migration
+class SendConfirmationInstructionsToAllUsers < ActiveRecord::Migration[4.2]
   def up
     User.find_each do |user| # for each user without confirmation instructions, send them
       user.send_confirmation_instructions if user.confirmation_sent_at.nil?

db/migrate/20120806025011_set_name_of_test_sets_and_test_cases.rb

@@ -1,4 +1,4 @@
-class SetNameOfTestSetsAndTestCases < ActiveRecord::Migration
+class SetNameOfTestSetsAndTestCases < ActiveRecord::Migration[4.2]
   def up
     # remove nulls from the name field
     TestSet.find_each do |set|

db/migrate/20120806212034_rename_user_to_owner.rb

@@ -1,4 +1,4 @@
-class RenameUserToOwner < ActiveRecord::Migration
+class RenameUserToOwner < ActiveRecord::Migration[4.2]
   def change
     rename_column :contests, :user_id, :owner_id
     rename_column :evaluators, :user_id, :owner_id

db/migrate/20120807033035_add_end_time_to_contest_relations.rb

@@ -1,4 +1,4 @@
-class AddEndTimeToContestRelations < ActiveRecord::Migration
+class AddEndTimeToContestRelations < ActiveRecord::Migration[4.2]
   def change
     add_column :contest_relations, :finish_at, :datetime # will be updated by caching
     Contest.find_each do |contest|

db/migrate/20120807042326_create_contest_scores.rb

@@ -1,4 +1,4 @@
-class CreateContestScores < ActiveRecord::Migration
+class CreateContestScores < ActiveRecord::Migration[4.2]
   def up
     # table to cache submission score for each problem/user (of all submissions that have been created)
     # however, this score may differ from actual submission score if it gets rejudged after a contest has been sealed

db/migrate/20120810041325_add_results_final_to_contest.rb

@@ -1,4 +1,4 @@
-class AddResultsFinalToContest < ActiveRecord::Migration
+class AddResultsFinalToContest < ActiveRecord::Migration[4.2]
   def up
     add_column :contests, :finalized_at, :datetime, default: nil
 

db/migrate/20130116092216_add_input_output_to_submissions.rb

@@ -1,4 +1,4 @@
-class AddInputOutputToSubmissions < ActiveRecord::Migration
+class AddInputOutputToSubmissions < ActiveRecord::Migration[4.2]
   def up
     add_column :submissions, :input, :string, limit: 255
     add_column :submissions, :output, :string, limit: 255

db/migrate/20130926021023_convert_groups_users_to_memberships.rb

@@ -1,4 +1,4 @@
-class ConvertGroupsUsersToMemberships < ActiveRecord::Migration
+class ConvertGroupsUsersToMemberships < ActiveRecord::Migration[4.2]
   def up
     rename_table :groups_users, :memberships
     add_column :memberships, :id, :primary_key

db/migrate/20130926065258_add_visibility_and_membership_to_groups.rb

@@ -1,4 +1,4 @@
-class AddVisibilityAndMembershipToGroups < ActiveRecord::Migration
+class AddVisibilityAndMembershipToGroups < ActiveRecord::Migration[4.2]
   def change
     add_column :groups, :visibility, :integer, null: false, default: 0
     add_column :groups, :membership, :integer, null: false, default: 0

db/migrate/20130926080926_change_membership_table_name.rb

@@ -1,4 +1,4 @@
-class ChangeMembershipTableName < ActiveRecord::Migration
+class ChangeMembershipTableName < ActiveRecord::Migration[4.2]
   def change
     rename_table :memberships, :group_memberships
   end

db/migrate/20130926105411_create_requests.rb

@@ -1,4 +1,4 @@
-class CreateRequests < ActiveRecord::Migration
+class CreateRequests < ActiveRecord::Migration[4.2]
   def change
     create_table :requests do |t|
       t.references :requester

db/migrate/20130928133936_add_last_seen_at_to_users.rb

@@ -1,4 +1,4 @@
-class AddLastSeenAtToUsers < ActiveRecord::Migration
+class AddLastSeenAtToUsers < ActiveRecord::Migration[4.2]
   def up
     add_column :users, :last_seen_at, :timestamp
 

db/migrate/20131001082750_add_created_at_to_group_memberships.rb

@@ -1,4 +1,4 @@
-class AddCreatedAtToGroupMemberships < ActiveRecord::Migration
+class AddCreatedAtToGroupMemberships < ActiveRecord::Migration[4.2]
   def up
     add_column :group_memberships, :created_at, :timestamp
 

db/migrate/20131001083843_create_file_attachments.rb

@@ -1,4 +1,4 @@
-class CreateFileAttachments < ActiveRecord::Migration
+class CreateFileAttachments < ActiveRecord::Migration[4.2]
   def change
     create_table :file_attachments do |t|
       t.string :name, limit: 255

db/migrate/20131002083519_add_filepath_to_group_file_attachments.rb

@@ -1,4 +1,4 @@
-class AddFilepathToGroupFileAttachments < ActiveRecord::Migration
+class AddFilepathToGroupFileAttachments < ActiveRecord::Migration[4.2]
   def change
     add_column :group_file_attachments, :filepath, :string, limit: 255
 

db/migrate/20131007002316_create_test_case_relations.rb

@@ -1,4 +1,4 @@
-class CreateTestCaseRelations < ActiveRecord::Migration
+class CreateTestCaseRelations < ActiveRecord::Migration[4.2]
   def change
     create_table :test_case_relations do |t|
       t.integer :test_case_id

db/migrate/20131007025034_convert_test_case_associations.rb

@@ -1,4 +1,4 @@
-class ConvertTestCaseAssociations < ActiveRecord::Migration
+class ConvertTestCaseAssociations < ActiveRecord::Migration[4.2]
   def up
     execute "INSERT INTO test_case_relations (test_set_id, test_case_id, created_at, updated_at) (SELECT test_set_id, id, created_at, updated_at FROM test_cases);"
 

db/migrate/20131013045616_create_languages.rb

@@ -1,4 +1,4 @@
-class CreateLanguages < ActiveRecord::Migration
+class CreateLanguages < ActiveRecord::Migration[4.2]
   def change
     create_table :languages do |t|
       t.string :name, limit: 255

db/migrate/20131013050536_add_language_id_to_submission.rb

@@ -1,4 +1,4 @@
-class AddLanguageIdToSubmission < ActiveRecord::Migration
+class AddLanguageIdToSubmission < ActiveRecord::Migration[4.2]
   def up
     add_column :submissions, :language_id, :integer
     rename_column :submissions, :language, :old_language

db/migrate/20131112032835_change_languages.rb

@@ -1,4 +1,4 @@
-class ChangeLanguages < ActiveRecord::Migration
+class ChangeLanguages < ActiveRecord::Migration[4.2]
   def change
     rename_column :languages, :is_interpreted, :interpreted
     add_column :languages, :flags, :string, limit: 255

db/migrate/20131117055333_add_extension_to_language.rb

@@ -1,4 +1,4 @@
-class AddExtensionToLanguage < ActiveRecord::Migration
+class AddExtensionToLanguage < ActiveRecord::Migration[4.2]
   def change
     add_column :languages, :extension, :string, limit: 255
   end

db/migrate/20131123054446_add_new_judge_columns_to_submissions.rb

@@ -1,4 +1,4 @@
-class AddNewJudgeColumnsToSubmissions < ActiveRecord::Migration
+class AddNewJudgeColumnsToSubmissions < ActiveRecord::Migration[4.2]
   def change
     add_column :submissions, :judge_log, :text
     add_column :submissions, :isolate_score, :integer

db/migrate/20131130104622_add_indexes_to_test_case_relations.rb

@@ -1,4 +1,4 @@
-class AddIndexesToTestCaseRelations < ActiveRecord::Migration
+class AddIndexesToTestCaseRelations < ActiveRecord::Migration[4.2]
   def change
     add_index :test_case_relations, :test_case_id
     add_index :test_case_relations, :test_set_id

db/migrate/20131201203759_isolate_judge_to_main_score_field.rb

@@ -1,4 +1,4 @@
-class IsolateJudgeToMainScoreField < ActiveRecord::Migration
+class IsolateJudgeToMainScoreField < ActiveRecord::Migration[4.2]
   def up
     execute "UPDATE submissions SET score = isolate_score;"
 

db/migrate/20131205080753_add_job_to_submissions.rb

@@ -1,4 +1,4 @@
-class AddJobToSubmissions < ActiveRecord::Migration
+class AddJobToSubmissions < ActiveRecord::Migration[4.2]
   def change
     add_column :submissions, :job, :string, limit: 255
   end

db/migrate/20131205201359_add_type_to_test_set.rb

@@ -1,4 +1,4 @@
-class AddTypeToTestSet < ActiveRecord::Migration
+class AddTypeToTestSet < ActiveRecord::Migration[4.2]
   def up
     add_column :test_sets, :visibility, :integer, limit: 1, null: false, default: 2
     add_column :test_cases, :problem_id, :integer

db/migrate/20131206074948_name_all_test_sets_and_cases.rb

@@ -1,6 +1,6 @@
 require "set"
 
-class NameAllTestSetsAndCases < ActiveRecord::Migration
+class NameAllTestSetsAndCases < ActiveRecord::Migration[4.2]
   def up
     Problem.find_each do |problem|
       name_uniquely(problem.test_sets)

db/migrate/20131207080120_change_enumeration_on_test_sets.rb

@@ -1,4 +1,4 @@
-class ChangeEnumerationOnTestSets < ActiveRecord::Migration
+class ChangeEnumerationOnTestSets < ActiveRecord::Migration[4.2]
   def up
     change_column :test_sets, :visibility, :integer, limit: 1, default: 0
     execute "UPDATE test_sets SET visibility = 3 WHERE visibility = 0" # sample

db/migrate/20131207091535_convert_dummy_test_sets_to_samples.rb

@@ -1,4 +1,4 @@
-class ConvertDummyTestSetsToSamples < ActiveRecord::Migration
+class ConvertDummyTestSetsToSamples < ActiveRecord::Migration[4.2]
   def up
     # mainly for the COCI problems
     TestSet.where("name LIKE '%dummy%'").find_each do |set|

db/migrate/20131208014408_add_language_group_model.rb

@@ -1,4 +1,4 @@
-class AddLanguageGroupModel < ActiveRecord::Migration
+class AddLanguageGroupModel < ActiveRecord::Migration[4.2]
   def change
     create_table :language_groups do |t|
       t.string :identifier, limit: 255