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https://issues.apache.org/jira/browse/TAPESTRY-2176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship closed TAPESTRY-2176.
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Resolution: Duplicate
I'm pretty convinced that this is a duplicate of TAPESTRY-2221.
> Select component cannot store a blank value on the client side and have it
> represent null.
> ------------------------------------------------------------------------------------------
>
> Key: TAPESTRY-2176
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2176
> Project: Tapestry
> Issue Type: Bug
> Components: Core Components
> Affects Versions: 5.0.10
> Environment: Windows XP, Eclipse 3.3.1, Hibernate, Jetty
> Reporter: Daniel
> Assignee: Howard M. Lewis Ship
>
> When implementing a select component that is populated with values from a
> database column, which represents a many to one relationship with the
> object/entity represented by the form containing the select component, blank
> values can be added and validated when editing the object/entity, but not
> when creating a new object/entity.
> For example, on a form representing a Product entity that contains a select
> component with a list of Manufacturers, it is possible to:
> 1. have a blank Manufacturer by default
> 2. edit a Product and select the blank Manufacturer and get the
> validation="required" message when attempting to save
> but it is not possible to get the validation message when creating a new
> Product if the blank Manufacturer is selected when saving. Instead the
> following exception (partial) is thrown:
> * org.apache.tapestry.ioc.internal.util.Defense.notBlank(Defense.java:59)
> *
> org.apache.tapestry.internal.TapestryInternalUtils.encodeContext(TapestryInternalUtils.java:519)
> *
> org.apache.tapestry.internal.services.ComponentInvocationImpl.getPath(ComponentInvocationImpl.java:101)
> *
> org.apache.tapestry.internal.services.ComponentInvocationImpl.buildURI(ComponentInvocationImpl.java:60)
> *
> org.apache.tapestry.internal.services.LinkImpl.buildURI(LinkImpl.java:105)
> *
> org.apache.tapestry.internal.services.LinkImpl.toRedirectURI(LinkImpl.java:120)
> *
> org.apache.tapestry.internal.services.ResponseImpl.sendRedirect(ResponseImpl.java:69)
> *
> org.apache.tapestry.internal.services.ActionRenderResponseGeneratorImpl.generateResponse(ActionRenderResponseGeneratorImpl.java:45)
> *
> org.apache.tapestry.internal.services.ComponentEventRequestHandlerImpl.handle(ComponentEventRequestHandlerImpl.java:66)
> *
> org.apache.tapestry.internal.services.ImmediateActionRenderResponseFilter.handle(ImmediateActionRenderResponseFilter.java:42)
> *
> org.apache.tapestry.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
> *
> org.apache.tapestry.services.TapestryModule$39.handle(TapestryModule.java:2073)
> *
> org.apache.tapestry.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:131)
> *
> org.apache.tapestry.services.TapestryModule$13.service(TapestryModule.java:911)
> * com.formos.project.services.AppModule$1.service(AppModule.java:134)
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