adjust filters

app/controllers/submissions_dashboard_controller.rb

@@ -11,10 +11,17 @@ class SubmissionsDashboardController < ApplicationController
                                .preload(:created_by_user, template: :author)
 
     @submissions = Submissions.search(@submissions, params[:q], search_template: true)
+    @submissions = Submissions::Filter.call(@submissions, current_user, params)
 
     @submissions = @submissions.pending if params[:status] == 'pending'
     @submissions = @submissions.completed if params[:status] == 'completed'
 
-    @pagy, @submissions = pagy(@submissions.preload(submitters: :start_form_submission_events).order(id: :desc))
+    @submissions = if params[:completed_at_from].present? || params[:completed_at_to].present?
+                     @submissions.order(Submitter.arel_table[:completed_at].maximum.desc)
+                   else
+                     @submissions.order(id: :desc)
+                   end
+
+    @pagy, @submissions = pagy(@submissions.preload(submitters: :start_form_submission_events))
   end
 end