From b775418532551538f346cd5ef6d39997b033b809 Mon Sep 17 00:00:00 2001
From: "OMAR.A" <58332033+civilcoder55@users.noreply.github.com>
Date: Fri, 3 Jan 2025 22:26:30 +0200
Subject: [PATCH] feat(common): add new flatten options to validation pipe

---
 content/techniques/validation.md | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/content/techniques/validation.md b/content/techniques/validation.md
index 286ef9598f..78e525a43b 100644
--- a/content/techniques/validation.md
+++ b/content/techniques/validation.md
@@ -30,7 +30,7 @@ Because this pipe uses the [`class-validator`](https://github.com/typestack/clas
 export interface ValidationPipeOptions extends ValidatorOptions {
   transform?: boolean;
   disableErrorMessages?: boolean;
-  exceptionFactory?: (errors: ValidationError[]) => any;
+  exceptionFactory?: (errors: ValidationError[] | string[]) => any;
 }
 ```
 
@@ -129,6 +129,16 @@ In addition to these, all `class-validator` options (inherited from the `Validat
     <td><code>boolean</code></td>
     <td>When set to true, validation of the given property will stop after encountering the first error. Defaults to false.</td>
   </tr>
+  <tr>
+    <td><code>disableFlattenErrorMessages</code></td>
+    <td><code>boolean</code></td>
+    <td>When set to true, the validation errors array will maintain its original structured format as <code>ValidationError</code> objects, rather than being flattened into an array of strings.</td>
+  </tr>
+  <tr>
+    <td><code>flatExceptionFactoryMessage</code></td>
+    <td><code>boolean</code></td>
+    <td>When set to true and an exceptionFactory is provided, the validation errors array will be flattened into an array of strings.</td>
+  </tr>
 </table>
 
 > info **Notice** Find more information about the `class-validator` package in its [repository](https://github.com/typestack/class-validator).