Count attachments in sub-tasks

Configuration

To use the Count attachments in sub-tasks template, simply select it from the template grid. Filter by Sub-tasks to find it faster.

Parameters

This template does not require any additional parameter configuration.

Expert mode

Expression

Jira expression:

issue.subtasks.map(subtask => subtask.attachments.length).reduce((a, b) => a + b, 0)

Display as

Number

Formatting style

Default (unformatted)

Details

1. What does the expression do?

This expression calculates the total number of attachments across all sub-tasks of the current work item.

2. Step-by-step breakdown

Let’s break it down:

• issue.subtasks: This refers to the list of all sub-tasks belonging to the current work item.

• .map(subtask => subtask.attachments.length): For each sub-task, this part counts how many attachments it has. The result is a list of numbers, where each number represents the attachment count for a sub-task.

• .reduce((a, b) => a + b, 0): This takes the list of attachment counts and adds them all together, starting from 0. The result is the total number of attachments in all sub-tasks.

3. Examples

Suppose your work item has three sub-tasks:

• Sub-task 1 has 2 attachments

• Sub-task 2 has 3 attachments

• Sub-task 3 has 0 attachments

The expression works as follows:

• issue.subtasks gives you the three sub-tasks.

• .map(...) turns this into [2, 3, 0].

• .reduce(...) adds them up: 2 + 3 + 0 = 5.

So, the result is 5.

4. Real-life use cases

• You want to quickly see how many files or documents are attached to all sub-tasks of a work item, for reporting or tracking purposes.

• Project managers can use this to monitor documentation completeness.