Hi Peter, It should just work if you've set the right rules.
Check out the example project on the page below. I created new Persons with avatars and I don't remember doing anything special, certainly not in the model. http://wiki.objectstyle.org/confluence/display/WONDER/ERAttachment+Framework What rules are you using for the attachment property? David On 2010-12-16, at 9:11 AM, Dan Beatty wrote: > Hi Peter, > Welcome to the list. I am surprised the Davids, the gentlemen, and Chuck > have not responded yet. > > The only way I am aware of is in the awake from insertion, namely to have one > always inserted when the EO is created. But, that seems like swap fly with > shot gun approach. > > V/r > > Daniel Beatty > Computer Scientist, Detonation Sciences Branch > Code 474300D > 2400 E. Pilot Plant Rd. M/S 1109 > China Lake, CA 93555 > [email protected] > (760)939-7097 > > > > > On 12/15/10 10:39 AM, "P C" <[email protected]> wrote: > >> I have a table called person, and the ERAttachment is an avatar to that >> person. My migrations setup initial values for a person, and I can add an >> avatar (ERAttachment) to an existing person. >> >> >> >> When I try to create a new person (within ERModernLook) and try to add the >> avatar I get a NullPropertyException thrown. I think what happens (correct >> me if I'm wrong) is that the there is no primary key assigned to my person >> object and values for attributes in person object are not saved in the >> database and when ERAttachment tries to make a relationship pointing back to >> the person object it throws the exception "type: NullPropertyException; >> additionalExceptions: ()>". >> >> How do I fix this? Thank you for your help. >> >> Very respectfully, >> Peter >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Webobjects-dev mailing list ([email protected]) >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/webobjects-dev/daniel.beatty%40navy.mil >> >> This email sent to [email protected] > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/webobjects-dev/programmingosx%40mac.com > > This email sent to [email protected]
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