From 1622d4889a2d7e07b4d5c61547fbc2db21886aff Mon Sep 17 00:00:00 2001
From: medchedli <medchedliby@gmail.com>
Date: Mon, 26 May 2025 15:09:01 +0100
Subject: [PATCH] fix: enhance validation error handling with custom exception
 messages

---
 api/src/main.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/api/src/main.ts b/api/src/main.ts
index 7b38a68e..a156ccef 100644
--- a/api/src/main.ts
+++ b/api/src/main.ts
@@ -6,7 +6,7 @@
  * 2. All derivative works must include clear attribution to the original creator and software, Hexastack and Hexabot, in a prominent location (e.g., in the software's "About" section, documentation, and README file).
  */
 
-import { ValidationPipe } from '@nestjs/common';
+import { BadRequestException, ValidationPipe } from '@nestjs/common';
 import { NestFactory } from '@nestjs/core';
 import bodyParser from 'body-parser';
 import session from 'express-session';
@@ -71,6 +71,16 @@ async function bootstrap() {
       whitelist: true,
       transform: true,
       // forbidNonWhitelisted: true,
+      exceptionFactory: (errors) => {
+        const messages = errors.map((error) => {
+          const constraints = error.constraints;
+          if (constraints) {
+            return Object.values(constraints)[0];
+          }
+          return `${error.property} has invalid value`;
+        });
+        return new BadRequestException(messages.join(', '));
+      },
     }),
     new ObjectIdPipe(),
   );