improve interactivity in Review page

resources/views/table/propose/review.blade.php

@@ -16,7 +16,7 @@
 
   $anyColChanges = $numChangedColumns || $numNewColumns || $numRemovedColumns || $colsReordered;
 
-  $anyChanges = $anyRowChanges || $anyColChanges;
+  $anyChanges = ($anyRowChanges || $anyColChanges) && strlen(trim($changeset->note)) > 0;
 @endphp
 
 @extends('table.propose.layout')
@@ -123,14 +123,20 @@
       <div class="row">
         <div class="col-md-7 offset-md-3">
           @if(user()->ownsTable($table))
-            <a href="" class="btn btn-outline-success {{$anyChanges?'':'disabled'}}">
+            <a href="" id="submit-button" class="btn btn-outline-success {{$anyChanges?'':'disabled'}}">
               @icon(fa-save fa-pr)Save & Apply
             </a>
           @else
-            <a href="" class="btn btn-outline-success {{$anyChanges?'':'disabled'}}">
+            <a href="" id="submit-button" class="btn btn-outline-success {{$anyChanges?'':'disabled'}}">
               @icon(fa-paper-plane-o fa-pr)Submit for review
             </a>
           @endif
+
+          @if($anyRowChanges || $anyColChanges)
+            <span class="text-muted ml-3" id="empty-note-prompt">Write a summary to submit your changes.</span>
+          @else
+            <span class="text-danger ml-3">No changes to submit.</span>
+          @endif
         </div>
       </div>
 
@@ -141,7 +147,10 @@
 @push('scripts')
   <script>
     ready(function () {
-      app.DraftNotePage(@json($table->draftUpdateRoute))
+      app.DraftNotePage({
+        route: @json($table->draftUpdateRoute),
+        anyChanges: @json($anyRowChanges || $anyColChanges)
+      })
     })
   </script>
 @endpush