post2 alerter - dict_object has no attribute 'response'

[OriHizkiaho]

I have a rule that alerts using post2 alerter.

I configured the current payload using jinja templates:

http_post2_payload:
    message: "Error: {{ error.message }} \nBody: {{ http.response.body.content }}"

The problem I faced is that the http endpoint I monitor may be down for some reason, and then in the elastic logs the relevant record doesn't have the field http.response, so I get the following error:

ValueError: HTTP Post 2: An unexpected error occurred with the 'http_post2_payload' value. Please check your template syntax: 'dict_object' has no attribute 'response'

I tried these three options as well but none of them work:

http_post2_payload:
    message: "Error: {{ error.message }} \nBody: {{ http.response.body.content if http.response is not none else 'None' }}"

http_post2_payload:
    message: "Error: {{ error.message }} \nBody: {{ http.response.body.content or 'None' }}"

http_post2_payload:
    message: "Error: {{ error.message }} \nBody: {{ http.response.body.content|d('None') }}"

Is there an option to give a default value for a field in a template? Or send an alert without the missing field?

[jertel]

http_post2_payload:
    message: "Error: {{ error.message if error is defined else 'None' }} \nBody: {{ http.response.body.content if http is defined and http.response is defined else 'None' }}"

[OriHizkiaho]

Thanks for the fast response!!