'dict' object has no attribute 'decode when validatign webhook

[Yawan-1]

Hi,

I am trying to implement Webhook Validation but it is showing

AttributeError: 'dict' object has no attribute 'decode

when Polar webhook trigger and this is the program I am using (just the mentioned one)

event = validate_event(
      body=request.data,
      headers=request.headers,
      secret=config("SECRET_KEY"),
)

In validate_event it was showing validate_event got unexpected argument payload so I found in the library and found it is using body as argument not payload but the new error occured.

[frankie567]

What Python web framework are you using? The error you show here means you pass a parsed version of the payload (i.e. already decoded as a dict). What validate_event expects is the raw payload, so it can correctly computes the signature.

[Yawan-1]

Hi @frankie567

I am using Django and I resolved it using json.dumps(request.data)

but it is showing

No matching signature found even after having the correct Signature on both ends.

[frankie567]

Yes, that's expected. If you serialise the payload again, you take the risk of not matching the original payload used to compute the signature.

That's why it's important to use the raw payload. With Django, you should access it through request.body

[Yawan-1]

Working now, Thank you very much. But As the error was showing payload is invalid argument and working after using body so I think it should be documented as validate_event is taking body as parameter not payload.