How to compare to smart values like a ternary operator

[brady.leach]

I have an automation that clones an issue. The trigger issue has a custom field that will be used to name the cloned issue. If this field is empty, I would like to use the trigger issue summary to name the cloned issue. For example

[brady.leach · Accepted solution]

I had to use the advanced smart value features and a bit of trial and error for the correct conditions to get it to work. For some reason, isEmpty doesn't seem to work as I expected on my version of Jira Cloud. 

In the end, the final value looked like:

{{#if(exists(triggerIssue.My Custom Field))}}{{triggerIssue.My Custom Field}}{{/}}
{{#if(not(exists(triggerIssue.My Custom Field)))}}{{triggerIssue.summary}}{{/}}

k 

[Alex Koxaras _Relational_]

Hi @brady.leach and welcome to the community,

You can use the conditional logic of smart values https://support.atlassian.com/cloud-automation/docs/jira-smart-values-conditional-logic/

But since the ternary operator is not supported, I would use two IF statements.

[brady.leach]

Hi, Thanks for the feedback.

Is it possible to do this comparison from within the create variable action? If so, could you provide an example?

The part I am struggling with is when I need to work with 2 smart values. 

What I am trying to do is in pseudocode

IF 
{{triggerIssue.My Custom Field}} IS NOT EMPTY
    smartValue = {{triggerIssue.My Custom Field}}
ELSE
    smartValue = {{triggerIssue.summary}}

[Alex Koxaras _Relational_]

@brady.leach inside the variable type the following:

{{#if(not(issue.My Custom Field.isEmpty))}}{{issue.My Custom Field}}{{/}}{{#if(issue.My Custom Field.isEmpty)}}{{issue.Summary}}{{/}}

Make any replacements necessary. On my instance it works fine! 

[brady.leach]

@Alex Koxaras _Relational_ Thank you. Can I confirm that if the `My Custom Field` value is empty, it will use the `summary` value? My system will default empty string if the `My Custom Field` isn't set.

[brady.leach]

@Alex Koxaras _Relational_ I got it working; thanks for your guidance. There seems to be an issue with the isEmpty on the short text field. In order to get it to work, I had to do 

{{#if(exists(triggerIssue.My Custom Field))}}{{triggerIssue.My Custom Field}}{{/}}{{#if(not(exists(triggerIssue.My Custom Field)))}}{{triggerIssue.summary}}{{/}}

Thanks again!