Due date and date completed should be 2 different pieces of data.

[Mike_Galligar]

I would like to know: 
    Was the card completed: On, Before, or After the due date? I'm not sure where the card should exist in the calendar: (on the due date? or on the completed date?).

What I do know is if you're tracking data; Due date and completed date are not the same things. On a good day, they will coincide but it will often workout that the completion will happen on a day that is different than the "due date".

I feel this is a flaw that should be fixed. In the meantime, I may look into using Butler to work on this.

[Esme Crutchley]

Hi @Mike_Galligar 

I use both of these together, I use Butler with Custom Fields.

This is the card button that I set up:

This card button ^^^ renames the card with the date and time that I completed the card AND changes the custom field 'Completed' to the date and time that it was completed. I have set the 'Completed' to a text box so that I can have the date in the format that I like, which is 20-03-08 (today).

The other way to do this, is to create a rule when a due date is ticked:

This doesn't include a custom field though

Hope that's helpful!

[Bear Humphreys]

Or maybe sounds like a job for the 'Custom Fields' power up?

Once activated, you can choose a name for a date field to be inserted, among other types of data.

Then your card will have that extra facility to mark the completed date information, separate to the due date information.

When the user selects the button, the standard date picker appears:

Hope that helps.

[Iain Dooley]

@Mike_Galligar you can see when a due date was marked as complete in the card actions, separately from when it was due:

If you wanted to be able to see at a glance when things are marked complete on, before or past the due date you could use a Butler rule to apply a label depending on those conditions: