Butler trigger id

Question

hi there! I´m stuck on finding the logic for a basic butler trigger id..

I try to populate a custom field, from a custom field combined with the value from a prefix in said custom field.

this rule works perfect:

when a card is added to the board, set custom field "NC Task id" to {triggercardnumber}"

BUT, I have in the power up "card numbers" set a prefix to each of our boards to be able to give them a unique id across boards. I am not able to pick up this prefix trigger from butler? as I would like it to popular the field with prefix then cardnumber.

basically I can make the rule to add a prefix by just typing it in the rule, but that would force me to create a separate rule for each new board..

anyone able to help me?

Iain Dooley · Answer

@Gøran Langgaård this Trellinator command will set all the blank custom fields to a given value:

https://gist.github.com/iaindooley/c1ce15aa4a093936afbfbe42d316f5b7

You can read more about Trellinator here:

https://community.atlassian.com/t5/Marketplace-Apps-Integrations/Introducing-Trellinator-Automate-Trello-with-Google-Apps-Script/ba-p/925271

Katrin Anger · Answer

@Gøran Langgaård

Okay, I now understand what you mean. There isn't an option currently, that would target only blank custom fields.

The only thing you could do is setting up a feature request and requesting this. They do keep working on Butler, so this might be responded to.

If you want to do this, click on 3 dots in the upper Butler right screen, and then on Feedback & Feature Requests.

Gøran Langgaård · Answer

thx for your reply!

the hacks where a good read for sure, figured most of that out the hard ways though;-)

I see I was bad at explaining.. I´m sure what I want is so basic there got to be a solution to it.. I´ve just run myself blind..

I just need to create a rule that identifies and populates blank custom field x with value y (see below for illustration..)