Thanks...
Another question is, when I want to set the foreign key to null
I use talk.actioner_id(null.asInstanceof[UserEntry])
which results an exception, how to set a foreign key to null?
Thanks
On 5月7日, 上午1時18分, David Pollak feeder.of.the.be...@gmail.com wrote:
On Tue, May 5, 2009 at 6:03 PM, sailormoo...@gmail.com
sailormoo...@gmail.com wrote:
Hello:
I want to know how to check if a field is null.
The code results in an error
if (talk.actioner_id.is != null)
{}
I'm figuring talk.actioner_id is a MappedLongForeignKey... correct? If so,
use if (talk.acutioner_id.defined_?) { ... }
Thanks,
David
warning: comparing values of types Long and Null using `!=' will
always yield true
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