add lang

app/controllers/application_controller.rb

@@ -99,10 +99,6 @@ class ApplicationController < ActionController::Base
     I18n.with_locale(locale, &)
   end
 
-  def lang
-    params[:lang].presence
-  end
-
   def with_browser_locale(&)
     return yield if I18n.locale != :'en-US' && I18n.locale != :en
 

app/controllers/start_form_controller.rb

@@ -173,4 +173,8 @@ class StartFormController < ApplicationController
     redirect_to start_form_path(template.slug, lang:, params: submitter_params.merge(email_verification: true)),
                 alert: I18n.t(:too_many_attempts)
   end
+
+  def lang
+    params[:lang].presence
+  end
 end

app/controllers/start_form_email_2fa_send_controller.rb

@@ -66,4 +66,8 @@ class StartFormEmail2faSendController < ApplicationController
       attrs[:email] = Submissions.normalize_email(attrs[:email])
     end
   end
+
+  def lang
+    params[:lang].presence
+  end
 end

app/controllers/submit_form_controller.rb

@@ -144,4 +144,8 @@ class SubmitFormController < ApplicationController
     ActiveStorage::Attachment.where(record: submission.submitters, name: :attachments)
                              .preload(:blob).index_by(&:uuid)
   end
+
+  def lang
+    params[:lang].presence
+  end
 end

app/controllers/submit_form_email_2fas_controller.rb

@@ -54,4 +54,8 @@ class SubmitFormEmail2fasController < ApplicationController
   def load_submitter
     @submitter = Submitter.find_by!(slug: params[:submitter_slug])
   end
+
+  def lang
+    params[:lang].presence
+  end
 end