My problem is that when I bind a some text field to the "last login
date" column, and choose multiple rows with same date (but NOT THE
SAME TIME), I get "Multiple Values".
Do you mean you have a separate NSTextView or NSTextField that is
bound to the array controller's selection.lastLoginDate? This is a
classic master/detail view setup.
How can I make it just show the date without time in the text field?
Can bindings accommodate me in some way to accomplish this?
If you have multiple rows selected, there's no way for the
mechanism to 'know' (or trust) that the dates are the same. Indeed
they're not (in the "this exact timestamp" sense, nor, likely, in the
"same object by pointer" sense).
You might try an NSValueTransformer to substitute one date with a
"best-guess" date (allowing for differing "to-the-day" dates),
following whatever logic you want. I don't know if this'll work for
multiple values, though. I've never done what you're proposing
personally.
--
I.S.
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