refactor announce

app/Models/NexusModel.php

@@ -21,4 +21,20 @@ class NexusModel extends Model
         return $date->format($this->dateFormat ?: 'Y-m-d H:i:s');
     }
 
+    /**
+     * Check is valid date string
+     *
+     * @see https://stackoverflow.com/questions/19271381/correctly-determine-if-date-string-is-a-valid-date-in-that-format
+     * @param $name
+     * @param string $format
+     * @return bool
+     */
+    public function isValidDate($name, $format = 'Y-m-d H:i:s'): bool
+    {
+        $date = $this->getRawOriginal($name);
+        $d = \DateTime::createFromFormat($format, $date);
+        // The Y ( 4 digits year ) returns TRUE for any integer with any number of digits so changing the comparison from == to === fixes the issue.
+        return $d && $d->format($format) === $date;
+    }
+
 }