Is there a way to get the count of items chosen in a select field

[Donald Kelley]

trying to take a field that has a list of customers and be able to query for only issues where the number of customers is greater than 1. The field will also have null values at times

[Vasiliy Zverev]

Try using multiuser picker field to store list of customers and calculated field (provided by ScriptRunner) with this script to store it count

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.Issue
import com.atlassian.jira.issue.fields.CustomField

/**
 * Get number of users for multiuser picker
 */
CustomField multiuserCstFld = ComponentAccessor.getCustomFieldManager().getCustomFieldObjectByName("FieldName")
if (multiuserCstFld == null)
    return "custom field not found"

return "" + ((ArrayList) multiuserCstFld.getValue(issue)).size()

[Silvia Goljerova]

I've tried this on the 'Components' field and receive an error:

"custom field not found"

Does this not work on OOTB fields?

[Vasiliy Zverev]

Components is not a custom field.

You should method of Issue class use https://docs.atlassian.com/software/jira/docs/api/7.1.2/com/atlassian/jira/issue/Issue.html#getComponents-- 

[Silvia Goljerova]

Thank you!

[Christopher Gronde]

So what would this look like in order to have a field that showed the number of components?  Since it's not a custom field?