If you've got a good way to do this, feel encouraged to develop it on a branch.
On Sun, Oct 11, 2009 at 8:22 PM, Naftoli Gugenheim <[email protected]>wrote: > It would be nice if there could be a generalized way of specifying > optionality for fields.(The first though question is whether the default > behavior is consistent -- do all field types equate NULL with their > default?) > I pasted the names of all the field types (by listing all Mapped*.class > files in target/classes/net/liftweb/mapper). For which of them does it make > sense to have optionality, which of them do, and would it make sense to have > a trait to mix in or some other consistent way to allow nullablility? > > > MappedBinary, MappedBirthYear, MappedBoolean, MappedCountry, MappedDate, > MappedDateTime, MappedDecimal, MappedDouble, MappedEmail, MappedEnum, > MappedEnumList, MappedFakeClob, MappedForeignKey, MappedGender, MappedInt, > MappedIntIndex, MappedLocale, MappedLong, MappedLongForeignKey, > MappedLongIndex, MappedPassword, MappedPoliteString, MappedPostalCode, > MappedString, MappedStringForeignKey, MappedStringIndex, MappedText, > MappedTextarea, MappedTime, MappedTimeZone, MappedUniqueId > > > On Wed, Oct 7, 2009 at 4:36 PM, David Pollak < > [email protected]> wrote: > >> >> >> On Wed, Oct 7, 2009 at 12:55 PM, harryh <[email protected]> wrote: >> >>> >>> I have a long field in my database that I want to have a unique index >>> (enforced by the database). Sometimes this field will be empty, in >>> which case I'd like to set it to NULL. 0 won't work because that >>> won't work with the unique index. >>> >>> MappedLong appears to be converting null to 0 internally. >>> Additionally overriding defaultValue for the field and returning null >>> does not appear to work. >>> >>> Is this by design? >> >> >> Yes. >> >> >>> Is it possible that I am misunderstanding something >>> here? >>> >> >> I think you're looking for a MappedOptLong which will treat None (or >> Empty) as NULL and Some(Long) as the value. >> >> Please open a ticket and I'll add the code. >> >>> >>> -harryh >>> >>> >>> >> >> >> -- >> Lift, the simply functional web framework http://liftweb.net >> Beginning Scala http://www.apress.com/book/view/1430219890 >> Follow me: http://twitter.com/dpp >> Surf the harmonics >> >> >> >> > > > > -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Surf the harmonics --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Lift" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~----------~----~----~----~------~----~------~--~---
