> On Jan 12, 2016, at 4:41 PM, Paul Hoadley <[email protected]> wrote: > > Hi Ted, > > On 13 Jan 2016, at 6:49 am, Theodore Petrosky <[email protected]> wrote: > >> I have an Entity with a derived column. Entity Person, real attributes >> firstName, lastName, derived column fullName firstName || ' ' || lastName. >> >> the derived column only shows up when I first run the app. when I add new >> people, the derived column is blank. even login out and back in does >> nothing. But when I stop the app and relaunch it, the derived column >> resolves and I see what I expect. > > Derived attributes are computed by the database, and so only updated when the > EO is fetched into memory. To update the derived attribute, you would need to > cause the EO to be re-fetched from the database. > >> 1. should I go back to creating a method on Entity Person fullName that >> returns a string concatenating first and last names? > > Probably, yes.
OK, that’s a plan, when do you feel it’s appropriate to use a derived column? > > > -- > Paul Hoadley > http://logicsquad.net/ > > > _______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to [email protected]
