Redirect trial query parameters

ee/app/controllers/trial_registrations_controller.rb

@@ -17,10 +17,12 @@ class TrialRegistrationsController < RegistrationsController
   private
 
   def set_redirect_url
+    target_url = new_trial_url(params: request.query_parameters)
+
     if user_signed_in?
-      redirect_to new_trial_url
+      redirect_to target_url
     else
-      store_location_for(:user, new_trial_url)
+      store_location_for(:user, target_url)
     end
   end
 

ee/spec/controllers/trial_registrations_controller_spec.rb

@@ -20,6 +20,14 @@ describe TrialRegistrationsController do
 
         expect(response).to redirect_to(new_trial_url)
       end
+
+      it 'redirect keeps the query string parameters' do
+        get_params = { glm_source: 'some_source', glm_content: 'some_content' }
+
+        get :new, params: get_params
+
+        expect(response).to redirect_to(new_trial_url(get_params))
+      end
     end
 
     context 'when customer is not authenticated' do