Set Parent issue field to Distinct values of multiselect

[Michiel]

Hi,

I am trying to copy the values of a custom "Checkboxes" field to the parent issue. I have a field named "Type" with the possible values "Frontend", "Backend". When a Story has a subtask with "Frontend" the story itself should copy this value.

With copy this goes ok, except for removing values. For example:

Story 1 

 - Subtask 1: Backend

 - Subtask 2: Frontend

Story 1 should now have the value "Frontend" and "Backend" as Type. When changing the value of Subtask 2 from Frontend to Backend the value of Type for Story 1 should now be only "Frontend".

I've tried the following:

{{issue.subtasks.customfield_10110.distinct.asJsonObjectArray("id")}}

But i cannot seem to get this working. Due to the nature of the checkboxes you get an array of id's ( `{"id": [1122, 1123]}`) when selecting multiple items.

Best regards,

Michiel

[Michiel]

I managed to do this, it seems a bit over engineered to me:

{
  "fields": {
    "customfield_10110": [{{#issue.subtasks.customfield_10110.id.join(",").replaceAll("[\\[\\] ]","").split(',').distinct}}{"id": "{{.}}"}{{^last}},{{/}}{{/}}]
  }
}

What this does is the following:

1. Get all subtask field ids and join them together with ",", we now have a string containing [1234], [1234, 1235]
2. Replace all unwanted characters, brackets and spaces, we now have a string containing 1234,1234,1235
3. Split this into a list and get the distinct values, we now have a list containing 1234,1235
4. Loop through this list, encapsulate each entry such that it becomes a json object and append a comma if it is not the last entry => string containing {"id": "1234"}, {"id": "1235"}
5. Put brackets around the string to make it an array of json objects

Surely this could be done more readable?