This template displays the name of the previous assignee in the current work item.
If the Assignee field was empty or never had a value before, “None” will be displayed.
Configuration
To use the Previous assignee template, simply select it from the template grid. Filter by Assignee to find it faster.
Parameters
This template does not require any additional parameter configuration.
Expert mode
If you switch to Expert mode you can see the Smart field in the Expression Parser. You can now tweak the expression to create a custom smart field based on this template.
Expression
Jira expression:
let assignees= issue.changelogs.map(i=>i.items).flatten().filter(i=>i.field=="assignee");
assignees.length>0 ?
assignees.map(a=>a.fromString)[0] == null ?
""
:assignees.map(a=>a.fromString)[0]
: ""