Extract user value from jira custom field and add it to group

[Abyakta Lenka]

I am trying to get user name from a JIRA custom filed and put it into a group . how can i achieve this using groovy or any postfunction in jira .I am trying to do this using Workflow post-function . Any other solution is welcome .

Eg : field A = user1 

i want to add "user1" to group "Jiraxyz" .

help 

Abyakta

[Vasiliy Zverev · Accepted solution]

Here is code for script postfunction provided by ScriptRunner plugin:

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.Issue
import com.atlassian.jira.security.groups.GroupManager
import com.atlassian.jira.user.ApplicationUser

Issue issue
GroupManager groupManager = ComponentAccessor.getGroupManager();
groupManager.addUserToGroup(
        ((ApplicationUser) issue.getCustomFieldValue(ComponentAccessor.getCustomFieldManager().getCustomFieldObjectByName("field name"))).getDirectoryUser()
        , groupManager.getGroup("groupName")
)

[Abyakta Lenka]

@Vasiliy Zverev @Vasiliy Zverev above code is giving error .

failed on issue: ABCD-5989, actionId: 11, file: <inline script>

java.lang.NullPointerException: Cannot invoke method getCustomFieldValue() on null object

 at Script23.run(Script23.groovy:9)

What i did :

I pasted the above code with groupName and customfield change in the postfunction.

Let me know if i am doing anything wrong

Abyakta

[Vasiliy Zverev]

This error namely means that custom field is empty to given issue. Here is updated code to fix this case:

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.Issue
import com.atlassian.jira.security.groups.GroupManager
import com.atlassian.jira.user.ApplicationUser

GroupManager groupManager = ComponentAccessor.getGroupManager();
try {
    groupManager.addUserToGroup(
            ((ApplicationUser) issue.getCustomFieldValue(ComponentAccessor.getCustomFieldManager().getCustomFieldObjectByName("field name"))).getDirectoryUser()
            , groupManager.getGroup("groupName")
    )
}
catch (NullPointerException e){
    
}

[Abyakta Lenka]

Thanks @Vasiliy Zverev @Vasiliy Zverev . This works .