Home/ Questions/Q 6954311
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-27T14:35:23+00:00

I have a generate method in one of my controllers that creates, updates and

  • 0

I have a generate method in one of my controllers that creates, updates and possibly destroys some ListColumns and ListCells, both of which have a list_id that points back to the original List. I need to ensure that the ListColumns won’t change while I’m creating the ListCells.

However, since generating the data might take a while, if a separate user calls generate on a different list, I’d like it to go ahead and create the ListColumns and ListCells for that list.

So, is there a way to lock the table so that I can’t add a ListColumn with a particular list_id until after the transaction is completed?

Thanks so much!

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Use the list table rows themselves as locks. Simply select a row from list in exclusive mode:

    select list.list_id from list where list.list_id = ? for update

    Even if you’re not going to actually update that row, doing that at the start of your method will block any other executions with the same list_id

    • 0