use callback

app/controllers/claims_form_callbacks.rb

@@ -64,6 +64,17 @@ def postcode_search_after_form_save_failure
     end
   end
 
+  def consent_before_show
+    if page_sequence.magic_link?
+      otp = OneTimePassword::Validator.new(params[:code], answers.sent_one_time_password_at)
+      if otp.valid? # && EligibleEyProvider.eligible_email?(answers.email_address) # TODO eligible check once model merged: https://github.com/DFE-Digital/claim-additional-payments-for-teaching/pull/3050
+        answers.assign_attributes(email_verified: true)
+        journey_session.save!
+        session[:slugs] << page_sequence.next_required_slug
+      end
+    end
+  end
+
   private
 
   def set_backlink_override_to_current_slug