[jira] [Commented] (NIFI-6167) PutSlack Processor Attachments Expression Language Error

["Peter Turcsanyi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-6167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16806643#comment-16806643 ] 

Peter Turcsanyi commented on NIFI-6167:
---------------------------------------

Hi [~spiglitz],

The correct syntax for calling the [now|https://nifi.apache.org/docs/nifi-docs/html/expression-language-guide.html#now] function is {{now()}}.
 So the fixed expression:
{noformat}
{
"fallback": "A flow in Apache NiFi has failed or experienced an error. ${now():format('h:mm a')}"
}
{noformat}

> PutSlack Processor Attachments Expression Language Error
> --------------------------------------------------------
>
>                 Key: NIFI-6167
>                 URL: https://issues.apache.org/jira/browse/NIFI-6167
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 1.9.0
>            Reporter: Adam Fisher
>            Priority: Major
>              Labels: features
>         Attachments: PutSlackError.jpg
>
>
> While using *PutSlack* processor, add the following JSON payload as the dynamic property value for an attachment:
> {code:java}
> {
> "fallback": "A flow in Apache NiFi has failed or experienced an error. ${now:format('h:mm a')}",
> }
> {code}
> This produces a validation error that the JSON can not be parsed. It doesn't matter where the EL is placed (e.g. different JSON fields) it always complains about EL even though the documentation supports EL. 
>  !PutSlackError.jpg! 
> Perhaps there a trick to embedding EL inside JSON quotes I am missing?



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