I just cleaned up this exception. The problem here is that with an empty list, the Grid component doesn't have the BeanModel it needs to render.
I think, in this case, it should be smart about not needing the BeanModel because there are no rows to render. The workaround is to provide the BeanModel explicitly. On Jan 31, 2008 3:55 PM, Chuck Kring <[EMAIL PROTECTED]> wrote: > I have an application that pulls data from a remote database and > presents it in a Grid component. > Sometimes the database is not available and my access method returns an > empty arraylist. This triggers a bad-looking exception in tapestry 5: > > > org.apache.tapestry.ioc.internal.util.TapestryException > > Failure reading parameter model of component SelectRoom:grid: xxx -- > > no source to determine list type from > > > > location > > context:SelectRoom.tml, line 11, column 141 > > > I understand the issue - Tapestry cannot determine how to format the row > without a valid source object. I do think the grid component's behavior > is a bit harsh here. > > Any suggestions about how to a) avoid this or b) detect the condition > and replace the grid component layout with an appropriate error message? > > Thanks! > > Chuck > -- Howard M. Lewis Ship Creator Apache Tapestry and Apache HiveMind --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
