Couchbase Eventing Function not working

Eventing
1

I wrote a simple couchbase function
function onUpdate{
doc[“Hi”] = “Hello”;
}
Just trying to add afield in my document on every mutation. But it is not reflecting in the document after deployed function starts running. Please suggest.

2

Hey vishal00921,
Do you have a mapping for destination bucket “doc”? It will be great if you export your function and share with us.

3

Yes, the format of the handler is as follows:

function OnUpdate(doc, meta) {
   doc['Hi'] = 'Hello';
   dst_bucket[meta.id] = doc;
}

A few notes:

  1. The handler signature is OnUpdate(doc, meta)
  2. meta.id is the key of the document that was just changed
  3. When you do doc[‘Hi’] you’re accessing a field by name ‘Hi’ inside the JSON object doc
  4. Assuming dst_bucket is mapped to a Couchbase bucket in “Bindings” area of the handler, assigning to this object will write to the mapped bucket, dst_bucket
  5. In 6.0 you cannot modify the source bucket that triggered the handler (to avoid recursion). You must make a copy of the modified document to a different bucket. [This restriction is relaxed in 6.5 which has automatic recursion detection & suppression. If you want an early build to try, let me know]

Best,
Siri