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system/Exceptions/ModelException.php

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+<?php
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Exceptions;
+
+/**
+ * Model Exceptions.
+ */
+class ModelException extends FrameworkException
+{
+    public static function forNoPrimaryKey(string $modelName)
+    {
+        return new static(lang('Database.noPrimaryKey', [$modelName]));
+    }
+
+    public static function forNoDateFormat(string $modelName)
+    {
+        return new static(lang('Database.noDateFormat', [$modelName]));
+    }
+}