save updates

app/Utilities/DatabaseFunctions.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Utilities;
+
+use PDOException;
+
+class DatabaseFunctions
+{
+    public static function save_update($query)
+    {
+        $max_tries = 5;
+        $tries = 0;
+        do {
+            $retry = false;
+            try {
+
+                $query->save();
+
+                return $query;
+            } catch (PDOException $exc) {
+                if ($tries < $max_tries && $exc->errorInfo[0] == 40001 && $exc->errorInfo[1] == 1213) {
+                    $retry = true;
+                    sleep(1);
+                } else {
+                    throw $exc;
+                }
+            }
+        } while ($retry);
+    }
+}