Are you sure your property editor is getting called correctly? If so, then you might try debugging it to see if you can recognize the problem in your code.
Matt On 7/8/07, Aled Rhys Jones <[EMAIL PROTECTED]> wrote:
Further to this (still can't save drop down list changes :-( ), I have an example where an object x contains an object y that can be selected using a drop down list, but y is currently null as I haven't added it to x yet (would be done using the drop down list). Is the trick here to create y in the formBackingObject and set the id to -1? Currently I get a null pointer in the property editor, presumably as its trying to compare the id or name of a null object. Aled Rhys Jones wrote: > Thanks for the replies Mike. > > Two issues with the below is that it doesn't seem to like me using > spring:form. Everything else seems to be form:form which seems to work. > I therefore tried the below using form:select, and I get the following > exception: > java.lang.NullPointerException > at > org.springframework.web.servlet.tags.form.SelectedValueComparator.exhaustiveCompare(SelectedValueComparator.java:154) > > at > org.springframework.web.servlet.tags.form.SelectedValueComparator.isSelected(SelectedValueComparator.java:90) > > at > org.springframework.web.servlet.tags.form.OptionWriter.isSelected(OptionWriter.java:184) > > at > org.springframework.web.servlet.tags.form.OptionWriter.renderOption(OptionWriter.java:172) > > at > org.springframework.web.servlet.tags.form.OptionWriter.doRenderFromCollection(OptionWriter.java:155) > > > Cheers > Aled > Michael Horwitz wrote: >> Hmm. In that case you might want to take a look at Spring's form tags >> to make life a little easier: >> http://static.springframework.org/spring/docs/2.0.x/reference/spring-form.tld.html >> <http://static.springframework.org/spring/docs/2.0.x/reference/spring-form.tld.html> >> >> >> So your JSP would look something like: >> >> <spring:form commandName="website" ...> >> >> ... >> >> <spring:select path="contact.country" items="${countries}" >> itemLabel="name" itemValue="id"/> >> .... >> >> </spring:form> >> >> A lot simpler and Spring will do all the hard work for you. As long >> as your form backing object has a non-null contact attribute, it >> should all work like magic. I think the problem in your code is the >> name you attach to the select element - Spring expects specific names >> to get its bindings sorted out. >> >> Mike. >> >> On 7/6/07, *Aled Rhys Jones* <[EMAIL PROTECTED] >> <mailto:[EMAIL PROTECTED]>> wrote: >> >> m4, wanted to finish off some functionality before updating to m5. >> >> >> Cheers >> >> Aled >> >> >> >> ------------------------------------------------------------------------ >> >> *From:* Michael Horwitz [mailto:[EMAIL PROTECTED] >> <mailto:[EMAIL PROTECTED]>] >> *Sent:* 06 July 2007 08:39 >> *To:* [email protected] <mailto:[email protected]> >> *Subject:* Re: [appfuse-user] Drop down list population >> >> >> Which version of AppFuse are you using Aled? >> >> On 7/5/07, *Tsung* < [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> >> wrote: >> >> >> Aled - Rather than having setCountryManager method, pass the >> CountryManager >> referene in CountryEditor's constructor. >> >> >> -- >> View this message in context: >> >> http://www.nabble.com/Add-ManyToOne-relationship-between-user-and-a-new-pojo-tf3993393s2369.html#a11454095 >> >> >> <http://www.nabble.com/Add-ManyToOne-relationship-between-user-and-a-new-pojo-tf3993393s2369.html#a11454095> >> >> Sent from the AppFuse - User mailing list archive at Nabble.com >> <http://nabble.com/>. >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> <mailto:[EMAIL PROTECTED]> >> For additional commands, e-mail: [EMAIL PROTECTED] >> <mailto:[EMAIL PROTECTED]> >> >> >> >> ------------------------------------------------------------------------ >> >> No virus found in this incoming message. >> Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: >> 269.10.1/888 - Release Date: 06/07/2007 06:36 >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
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