custom exception for 409 error

apps/api/exceptions.py

@@ -0,0 +1,22 @@
+"""
+
+"""
+
+from rest_framework.views import exception_handler
+from rest_framework.response import Response
+from rest_framework import status
+
+def conflict_exception_handler(exc, context):
+    response = exception_handler(exc, context)
+        
+    if response is not None and isinstance(response.data, dict):
+        for errors in response.data.values():
+            if not isinstance(errors, list):
+                continue
+            
+            for error in errors:
+                if hasattr(error, 'code') and error.code == 'unique':
+                    response.status_code = status.HTTP_409_CONFLICT
+                    return response
+
+    return response

core/settings.py

@@ -247,5 +247,6 @@ REST_FRAMEWORK = {
     'DEFAULT_THROTTLE_RATES': {
         'anon': '100/day',
         'user': '1000/day'
-    }
+    },
+    "EXCEPTION_HANDLER": "apps.api.exceptions.conflict_exception_handler"
 }