From e1444e098d46b5f8c8ea615e1360bf267505af8f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pauline=20Gr=C3=BCndel?= <gruendel@uni-potsdam.de>
Date: Fri, 10 Jan 2025 19:35:20 +0100
Subject: [PATCH] =?UTF-8?q?methode=20id=20nicht=20negativ=20hinzugef=C3=BC?=
 =?UTF-8?q?gt?=
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---
 Backend/backend.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Backend/backend.py b/Backend/backend.py
index bd305f5..fecab4f 100644
--- a/Backend/backend.py
+++ b/Backend/backend.py
@@ -52,6 +52,11 @@ class Project(BaseModel):
         if not re.match(r"^(0[1-9]|1[0-2])-\d{4}$", value):
             raise ValueError("Das Datum muss im Format MM-YYYY sein.")
         return value
+    
+    def validate_id(cls, value):
+        if id < 0:
+            raise ValueError("Die id muss positiv sein.")
+        return value
 
 
 def load_projects():
-- 
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