It was unclear because I was following Screencast 4 where it makes
use of the Label component (see attached image).  I understand that it's
in a different context, but the usage in that example makes it look that
label is working on a member, not a component.  Does the "for" in the
screencast refer to the "firstName" from the "parameter" or from the id
of the TextField or something else entirely?

  If I do:

        <t:textfield label="Id" disabled="true" value="id"/>

  I don't get a label, just the textfield.

  Thanks,
  - Brice

-----Original Message-----
From: Howard M. Lewis Ship (JIRA) [mailto:[EMAIL PROTECTED] 
Sent: Monday, May 21, 2007 3:20 PM
To: Fisher, Brice A
Subject: [jira] Resolved: (TAPESTRY-1486) <t:label> tag throws exception
reading valid property


     [
https://issues.apache.org/jira/browse/TAPESTRY-1486?page=com.atlassian.j
ira.plugin.system.issuetabpanels:all-tabpanel ]

Howard M. Lewis Ship resolved TAPESTRY-1486.
--------------------------------------------

    Resolution: Invalid

Please check the message: "could not find a component" ... Label does
what it normally does, interpret the for parameter as the id of a
component (using a default prefix of "component:").  

The for parameter has to be a component.

You probably want to bind the label parameter of the TextField
component.

> <t:label> tag throws exception reading valid property
> -----------------------------------------------------
>
>                 Key: TAPESTRY-1486
>                 URL:
https://issues.apache.org/jira/browse/TAPESTRY-1486
>             Project: Tapestry
>          Issue Type: Bug
>          Components: Core Components, tapestry-core
>    Affects Versions: 5.0.3
>         Environment: Tapestry 5.0.3, Project created from Maven
Archetype, Developing under Eclipse with Jetty
>            Reporter: Brice Fisher
>
> The <t:label> tag gives an exception that it can't find a valid
property in an object:
> Java:
> public class Test
> {
>     private String id = "foo";
>     public String getId() {
>         return id;
>     }
>     public void setId(String id) {
>         this.id = id;
>     }    
> }
> HTML:
> <t:form>
>     <t:label for="id"/>
>     <t:textfield disabled="true" value="id"/> </t:form>
> Exception:
> An unexpected application exception has occurred.
> org.apache.tapestry.ioc.internal.util.TapestryException
>  
> Failure reading parameter for of component
gov.sandia.cip.ResLib.Client.ResLibWebClient.pages.Study:label:
Component gov.sandia.cip.ResLib.Client.ResLibWebClient.pages.Study does
not contain an embedded component with id 'id'.
> Stack trace
> org.apache.tapestry.internal.structure.ComponentPageElementImpl.getEmb
> eddedElement(ComponentPageElementImpl.java:836)
> org.apache.tapestry.internal.structure.InternalComponentResourcesImpl.
> getEmbeddedComponent(InternalComponentResourcesImpl.java:90)
> org.apache.tapestry.internal.bindings.ComponentBinding.get(ComponentBi
> nding.java:40)
> org.apache.tapestry.internal.structure.InternalComponentResourcesImpl.
> readParameter(InternalComponentResourcesImpl.java:188)
> org.apache.tapestry.corelib.components.Label._$read_parameter_for(Labe
> l.java)
> org.apache.tapestry.corelib.components.Label.begin(Label.java:54)
> org.apache.tapestry.corelib.components.Label.beginRender(Label.java)
> org.apache.tapestry.internal.structure.ComponentPageElementImpl$10$1.r
> un(ComponentPageElementImpl.java:345)
> org.apache.tapestry.internal.structure.ComponentPageElementImpl.invoke
> (ComponentPageElementImpl.java:932)
> org.apache.tapestry.internal.structure.ComponentPageElementImpl.access
> $100(ComponentPageElementImpl.java:69)
> org.apache.tapestry.internal.structure.ComponentPageElementImpl$10.ren
> der(ComponentPageElementImpl.java:349)
> org.apache.tapestry.internal.services.RenderQueueImpl.run(RenderQueueI
> mpl.java:57)
> org.apache.tapestry.internal.services.PageMarkupRendererImpl.renderPag
> eMarkup(PageMarkupRendererImpl.java:40)
> org.apache.tapestry.internal.services.PageResponseRendererImpl.renderP
> ageResponse(PageResponseRendererImpl.java:45)
> org.apache.tapestry.internal.services.PageRenderDispatcher$1.renderPag
> e(PageRenderDispatcher.java:82)
> org.apache.tapestry.internal.services.PageLinkHandlerImpl.handle(PageL
> inkHandlerImpl.java:89)
> org.apache.tapestry.internal.services.PageLinkHandlerImpl.handle(PageL
> inkHandlerImpl.java:49)
> org.apache.tapestry.internal.services.PageRenderDispatcher.dispatch(Pa
> geRenderDispatcher.java:91)
> org.apache.tapestry.services.TapestryModule$12.service(TapestryModule.
> java:1201)
> org.apache.tapestry.internal.services.LocalizationFilter.service(Local
> izationFilter.java:43)
> org.apache.tapestry.services.TapestryModule$3.service(TapestryModule.j
> ava:736)
> org.apache.tapestry.internal.services.StaticFilesFilter.service(Static
> FilesFilter.java:63)
> org.apache.tapestry.internal.services.CheckForUpdatesFilter$2.invoke(C
> heckForUpdatesFilter.java:91)
> org.apache.tapestry.internal.services.CheckForUpdatesFilter$2.invoke(C
> heckForUpdatesFilter.java:82)
> org.apache.tapestry.ioc.internal.util.ConcurrentBarrier.withRead(Concu
> rrentBarrier.java:77)
> org.apache.tapestry.internal.services.CheckForUpdatesFilter.service(Ch
> eckForUpdatesFilter.java:104)
> org.apache.tapestry.services.TapestryModule$11.service(TapestryModule.
> java:1179)
> org.apache.tapestry.TapestryFilter.doFilter(TapestryFilter.java:115)
> org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebAppl
> icationHandler.java:334)
> org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicatio
> nHandler.java:286)
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:56
> 7)
> org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
> org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationC
> ontext.java:526)
> org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
> org.mortbay.http.HttpServer.service(HttpServer.java:879)
> org.mortbay.http.HttpConnection.service(HttpConnection.java:789)
> org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:960)
> org.mortbay.http.HttpConnection.handle(HttpConnection.java:806)
> org.mortbay.http.SocketListener.handleConnection(SocketListener.java:2
> 18)
> org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:331)
> org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:520)

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