Use temporary negative IDs for rows created in a draft Changeset

2018-08-11 16:19:32 +02:00
parent 7938519a64
commit 8efc31d820
12 changed files with 193 additions and 72 deletions
@@ -0,0 +1,22 @@
+<?php
+
+
+namespace App\Tables;
+
+/**
+ * Utility for allocating & assigning temporary row IDs
+ * for rows in a changeset
+ */
+class DraftRowNumerator extends BaseNumerator
+{
+    /**
+     * Create a numerator for the given number of rows.
+     *
+     * @param int $capacity - how many
+     */
+    public function __construct(Changeset $changeset, $capacity)
+    {
+        parent::__construct([$changeset->nextRowID - $capacity + 1, $changeset->nextRowID]);
+        $changeset->nextRowID -= $capacity;
+    }
+}