Prevent card being moved to "Completed" until a checklist is fully completed?

[Dean Wright]

We're using Trello Standard to manage our production workflow.

Each card contains a checklist with a final item that links to a Google Form. Unfortunately, some staff are dragging cards into the Completed list without filling in the form or completing the checklist.

Ideally I'd like to enforce the following:

• If a user tries to move a card into the Completed list...
• Trello checks whether a specific checklist is 100% complete.
• If the checklist is incomplete, the move is prevented (or the card is automatically returned to its previous list with a message).

I've looked through automation but I can't find a condition that checks whether a checklist is complete when a card is moved to a list.

Thanks!

[Oleksandr]

Dean, try a rule like this:

when a card with an incomplete checklist is added to list "Completed", move the card to the top of list "{triggercardpreviouslistname}", and post comment "@{username} please complete the checklist before moving this card to Completed."

This will not block the move before it happens, but it should return the card to the list it came from and leave a comment. Trello supports rules triggered by a card being moved into a list, and {triggercardpreviouslistname} is the variable for the list the card came from.