Pass param to error messages during validation. Fixes #589

Author: lonnieezell

system/Validation/Validation.php

@@ -234,7 +234,7 @@ protected function processRules(string $field, $value, $rules = null, array $dat
 			// Set the error message if we didn't survive.
 			if ($passed === false)
 			{
-				$this->errors[$field] = is_null($error) ? $this->getErrorMessage($rule, $field) : $error;
+				$this->errors[$field] = is_null($error) ? $this->getErrorMessage($rule, $field, $param) : $error;
 
 				return false;
 			}

tests/system/Validation/ValidationTest.php

@@ -161,6 +161,8 @@ public function testGetErrors()
 
 	public function testGetErrorsWhenNone()
 	{
+		$_SESSION = [];
+
 		$data = [
 			'foo' => 123,
 		];