Column order saving to Changeset

app/Tables/Changeset.php

@@ -265,7 +265,9 @@ class Changeset
         $colsById = collect($columns)->keyBy('id')->all();
         $newOrder = [];
         foreach ($this->columnOrder as $id) {
-            $newOrder[] = $colsById[$id];
+            if (isset($colsById[$id])) {
+                $newOrder[] = $colsById[$id];
+            }
         }
 
         $leftover_keys = array_diff(array_keys($colsById), $this->columnOrder);
@@ -455,6 +457,8 @@ class Changeset
     {
         if ($this->isNewColumn($id)) {
             unset($this->newColumns[$id]);
+            // remove it from order
+            $this->columnOrder = array_diff($this->columnOrder, [$id]);
         }
         else {
             $this->removedColumns[] = $id;
@@ -573,4 +577,14 @@ class Changeset
         $this->newColumns[$cid] = $col;
         return $col;
     }
+
+    public function setColOrder(array $order)
+    {
+        $allCols = $this->fetchAndTransformColumns();
+        $ids = collect($allCols)->pluck('id')->all();
+        $order = array_intersect($order, $ids);
+        $missing = array_diff($ids, $order);
+
+        $this->columnOrder = array_merge($order, $missing);
+    }
 }