Enable more frozen string in app/controllers/

Enables frozen string for the following:

* app/controllers/dashboard/**/*.rb
* app/controllers/explore/**/*.rb
* app/controllers/google_api/**/*.rb
* app/controllers/groups/**/*.rb
* app/controllers/import/**/*.rb
* app/controllers/instance_statistics/**/*.rb
* app/controllers/ldap/**/*.rb
* app/controllers/oauth/**/*.rb
* app/controllers/profiles/**/*.rb

Partially addresses #47424.

14 files changed, 29 insertions, 1 deletions

diff --git a/app/controllers/profiles/accounts_controller.rb b/app/controllers/profiles/accounts_controller.rb
index fd9cb9fca3e..cb3180f4196 100644
--- a/app/controllers/profiles/accounts_controller.rb
+++ b/app/controllers/profiles/accounts_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::AccountsController < Profiles::ApplicationController
   include AuthHelper
 
diff --git a/app/controllers/profiles/active_sessions_controller.rb b/app/controllers/profiles/active_sessions_controller.rb
index f1e77d68acd..efe7ede5efa 100644
--- a/app/controllers/profiles/active_sessions_controller.rb
+++ b/app/controllers/profiles/active_sessions_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::ActiveSessionsController < Profiles::ApplicationController
   def index
     @sessions = ActiveSession.list(current_user)
diff --git a/app/controllers/profiles/application_controller.rb b/app/controllers/profiles/application_controller.rb
index c8be288b9a0..52b046ef64f 100644
--- a/app/controllers/profiles/application_controller.rb
+++ b/app/controllers/profiles/application_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::ApplicationController < ApplicationController
   layout 'profile'
 end
diff --git a/app/controllers/profiles/avatars_controller.rb b/app/controllers/profiles/avatars_controller.rb
index 4f030ded80f..3378a09628c 100644
--- a/app/controllers/profiles/avatars_controller.rb
+++ b/app/controllers/profiles/avatars_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::AvatarsController < Profiles::ApplicationController
   def destroy
     @user = current_user
diff --git a/app/controllers/profiles/chat_names_controller.rb b/app/controllers/profiles/chat_names_controller.rb
index a186c5f36a8..2e78b9e6dc7 100644
--- a/app/controllers/profiles/chat_names_controller.rb
+++ b/app/controllers/profiles/chat_names_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::ChatNamesController < Profiles::ApplicationController
   before_action :chat_name_token, only: [:new]
   before_action :chat_name_params, only: [:new, :create, :deny]
diff --git a/app/controllers/profiles/emails_controller.rb b/app/controllers/profiles/emails_controller.rb
index a39824ec9c8..503eda250b4 100644
--- a/app/controllers/profiles/emails_controller.rb
+++ b/app/controllers/profiles/emails_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::EmailsController < Profiles::ApplicationController
   before_action :find_email, only: [:destroy, :resend_confirmation_instructions]
 
diff --git a/app/controllers/profiles/gpg_keys_controller.rb b/app/controllers/profiles/gpg_keys_controller.rb
index c32507756e8..8c34a66c374 100644
--- a/app/controllers/profiles/gpg_keys_controller.rb
+++ b/app/controllers/profiles/gpg_keys_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::GpgKeysController < Profiles::ApplicationController
   before_action :set_gpg_key, only: [:destroy, :revoke]
 
diff --git a/app/controllers/profiles/keys_controller.rb b/app/controllers/profiles/keys_controller.rb
index 6035258667e..01801c31327 100644
--- a/app/controllers/profiles/keys_controller.rb
+++ b/app/controllers/profiles/keys_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::KeysController < Profiles::ApplicationController
   skip_before_action :authenticate_user!, only: [:get_keys]
 
diff --git a/app/controllers/profiles/notifications_controller.rb b/app/controllers/profiles/notifications_controller.rb
index 00bd2040b9a..b719b70c56e 100644
--- a/app/controllers/profiles/notifications_controller.rb
+++ b/app/controllers/profiles/notifications_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::NotificationsController < Profiles::ApplicationController
   # rubocop: disable CodeReuse/ActiveRecord
   def show
diff --git a/app/controllers/profiles/passwords_controller.rb b/app/controllers/profiles/passwords_controller.rb
index b8ccc6e3c99..a0391d677c4 100644
--- a/app/controllers/profiles/passwords_controller.rb
+++ b/app/controllers/profiles/passwords_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::PasswordsController < Profiles::ApplicationController
   skip_before_action :check_password_expiration, only: [:new, :create]
   skip_before_action :check_two_factor_requirement, only: [:new, :create]
diff --git a/app/controllers/profiles/personal_access_tokens_controller.rb b/app/controllers/profiles/personal_access_tokens_controller.rb
index b357741e3fb..4b6ec2697b7 100644
--- a/app/controllers/profiles/personal_access_tokens_controller.rb
+++ b/app/controllers/profiles/personal_access_tokens_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::PersonalAccessTokensController < Profiles::ApplicationController
   def index
     set_index_vars
diff --git a/app/controllers/profiles/preferences_controller.rb b/app/controllers/profiles/preferences_controller.rb
index ed0f98179eb..37ac11dc6a1 100644
--- a/app/controllers/profiles/preferences_controller.rb
+++ b/app/controllers/profiles/preferences_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::PreferencesController < Profiles::ApplicationController
   before_action :user
 
diff --git a/app/controllers/profiles/two_factor_auths_controller.rb b/app/controllers/profiles/two_factor_auths_controller.rb
index 29ff18a1219..ba94196b2f9 100644
--- a/app/controllers/profiles/two_factor_auths_controller.rb
+++ b/app/controllers/profiles/two_factor_auths_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::TwoFactorAuthsController < Profiles::ApplicationController
   skip_before_action :check_two_factor_requirement
 
@@ -30,7 +32,7 @@ class Profiles::TwoFactorAuthsController < Profiles::ApplicationController
 
       unless two_factor_grace_period_expired?
         grace_period_deadline = current_user.otp_grace_period_started_at + two_factor_grace_period.hours
-        flash.now[:alert] << " You need to do this before #{l(grace_period_deadline)}."
+        flash.now[:alert] = flash.now[:alert] + " You need to do this before #{l(grace_period_deadline)}."
       end
     end
 
diff --git a/app/controllers/profiles/u2f_registrations_controller.rb b/app/controllers/profiles/u2f_registrations_controller.rb
index e3d7737f44a..e6a154fb6aa 100644
--- a/app/controllers/profiles/u2f_registrations_controller.rb
+++ b/app/controllers/profiles/u2f_registrations_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Profiles::U2fRegistrationsController < Profiles::ApplicationController
   def destroy
     u2f_registration = current_user.u2f_registrations.find(params[:id])