How to automatically change the due date of a checklist item ?

[iliaskzz]

Hi everyone,

I have workflow in a board where a checklist of items is populated at every stage (column) of the process 

Every item of the checklist has a due date and a member that are assigned automatically through Butler. 

It may happen in a checklist that task A will be completed later than planned, so the due date will be manually changed by the member. I want that, when this due date is manually changed, it automatically updates the due date of the following task as they are dependant. 

Here is an example 

“For example, if task "A" is not completed within the 5 day allotted window, that will throw off the timing of all other tasks to follow. The next task is "B" which is dependent on the the previous task. If the first task is delayed by 10 days, the remaining tasks would be affected by 10 days as well.”

Note that in Butler, I assign the automatic due dates of items based on a custom field "Start date" (see screenshot 1)

I tried so many workarounds but none seems to be working, as the root cause is that Butler does not allow much control and customization over the due date of items, it only does for due dates of the card. (this seems a bit odd, as the use case I described is very common in project management and normally should be covered in Butler)

Do you have any solution or insight to share with me ? 

[milynnus]

@iliaskzz 

Since there is no trigger for due date or change of due date...etc , this will have to be custom build with some webhook and some code. 

Had a previously coded endpoint that bumps item due dates by x days but I have not migrated over.