Hi Josh
What was your encoding issue? I'm having the same issue here with a
SelectBox Encoder.
Ro
xfile80303 wrote:
>
>
> Thanks Josh!
>
> You helped me identify that it was an encoder issue on my end.
>
> I appreciate your help. :)
>
> Cheers,
>
> Levi
>
>
> Josh Canfield wrote:
>>
>> The only change I made was making isValid into a property and a
>> checkbox in the form so I could switch between behaviors.
>>
>> Here is the complete code that works for me.
>>
>> public class Index {
>> @Component
>> private Zone nothingSelectedZone;
>>
>> @Component
>> private Form _parts;
>>
>> @Property
>> private boolean errorVisible;
>>
>> @Property
>> private boolean resultsVisible = true;
>>
>> @Property
>> private boolean _valid;
>>
>> @InjectPage
>> private LoopedForm otherPage; // a random page I have in my
>> experiments project.
>>
>> void onValidateFormFromParts() {
>> if (_valid) {
>> _parts.recordError("No items selected.");
>> } else {
>> resultsVisible = true;
>> _parts.clearErrors();
>> }
>> errorVisible = _parts.getHasErrors();
>> }
>>
>> Object onSuccessFromParts() {
>> return otherPage;
>> }
>>
>> Object onFailureFromParts() {
>> return nothingSelectedZone.getBody();
>> }
>> }
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <!DOCTYPE html
>> PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
>> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>
>>
>> <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";
>> xmlns="http://www.w3.org/1999/xhtml";
>> xml:lang="en"
>> lang="en">
>> <head>
>> <title>Experiment Home</title>
>> </head>
>> <body>
>>
>> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
>> visible="${errorVisible}">
>> No items have been selected.
>> </t:zone>
>> <t:zone t:id="resultsZone" id="resultsZone" visible="${resultsVisible}">
>> <form t:id="parts" t:zone="nothingSelectedZone">
>> <t:checkbox value="valid"/>
>> <input type="button" t:type="submit" value="Do It"/>
>> </form>
>> </t:zone>
>>
>> </body>
>> </html>
>>
>> On Fri, Oct 2, 2009 at 6:03 PM, xfile80303 <l...@grokers.net> wrote:
>>>
>>> Hi Josh,
>>>
>>> Thanks for looking.
>>>
>>> I'm afraid the stack trace I provided is a red herring and does not have
>>> any
>>> bearing on the situation. It comes from the fact that my encoder was
>>> getting purged from the session due to it being set as FLASH only. And
>>> this
>>> exception actually only happens after I changed the code from:
>>>
>>> <form t:id="parts" t:zone="nothingSelectedZone">
>>> to
>>> <form t:id="parts" t:zone="resultsZone">
>>>
>>> which actually works... it's as if something in the form needs to be
>>> rebuilt
>>> after the submit.
>>>
>>> You say you were able to get my code to work? As is, or did you need to
>>> make
>>> changes? I'd still like to have the flexibility to refresh the
>>> nothingSelectedZone and not touch the resultsZone.
>>>
>>> Cheers,
>>>
>>> Levi
>>>
>>>
>>> Josh Canfield wrote:
>>>>
>>>> Your example code works fine and the exception you provide makes it
>>>> look like you're in a loop?
>>>>
>>>>> Caused by: java.lang.NullPointerException
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>>>>
>>>> That line from the code:
>>>> // We assume that if an encoder is available when we rendered,
>>>> that one will be available
>>>> // when the form is submitted.
>>>> Object restoredValue = encoder.toValue(clientValue);
>>>>
>>>> Makes me think that you aren't getting an encoder?
>>>>
>>>> Can you provide a simple and complete example that breaks?
>>>> Josh
>>>>
>>>> On Fri, Oct 2, 2009 at 4:50 PM, xfile80303 <l...@grokers.net> wrote:
>>>>>
>>>>> Okay, I have some more information...
>>>>>
>>>>> When I click on the submit button, after the validation error, I see
>>>>> this
>>>>> in
>>>>> the log:
>>>>>
>>>>> ERROR [http-8080-5: RequestExceptionHandler]: Processing of request
>>>>> failed
>>>>> with uncaught exception:
>>>>> org.apache.tapestry5.runtime.ComponentEventException
>>>>> org.apache.tapestry5.runtime.ComponentEventException [at
>>>>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 106]
>>>>> at
>>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1098)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.AjaxComponentEventRequestHandler.handle(AjaxComponentEventRequestHandler.java:107)
>>>>> at
>>>>> $ComponentEventRequestHandler_12417a4b929.handle($ComponentEventRequestHandler_12417a4b929.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
>>>>> at
>>>>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$36.handle(TapestryModule.java:2164)
>>>>> at
>>>>> $ComponentEventRequestHandler_12417a4b92b.handle($ComponentEventRequestHandler_12417a4b92b.java)
>>>>> at
>>>>> $ComponentEventRequestHandler_12417a4b911.handle($ComponentEventRequestHandler_12417a4b911.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.ComponentRequestHandlerTerminator.handleComponentEvent(ComponentRequestHandlerTerminator.java:43)
>>>>> at
>>>>> $ComponentRequestHandler_12417a4b80d.handleComponentEvent($ComponentRequestHandler_12417a4b80d.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:46)
>>>>> at
>>>>> $Dispatcher_12417a4b819.dispatch($Dispatcher_12417a4b819.java)
>>>>> at
>>>>> $Dispatcher_12417a4b80a.dispatch($Dispatcher_12417a4b80a.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$RequestHandlerTerminator.service(TapestryModule.java:245)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:778)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:767)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> com.java.dse.cwp.eos.services.EosModule$1.service(EosModule.java:254)
>>>>> at
>>>>> $RequestFilter_12417a4b806.service($RequestFilter_12417a4b806.java)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81)
>>>>> at
>>>>> org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103)
>>>>> at
>>>>> $RequestHandler_12417a4b80b.service($RequestHandler_12417a4b80b.java)
>>>>> at
>>>>> $RequestHandler_12417a4b800.service($RequestHandler_12417a4b800.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:197)
>>>>> at
>>>>> org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53)
>>>>> at
>>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
>>>>> at
>>>>> $HttpServletRequestFilter_12417a4b7ff.service($HttpServletRequestFilter_12417a4b7ff.java)
>>>>> at
>>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>>> at
>>>>> org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:726)
>>>>> at
>>>>> $HttpServletRequestHandler_12417a4b802.service($HttpServletRequestHandler_12417a4b802.java)
>>>>> at
>>>>> $HttpServletRequestHandler_12417a4b7fd.service($HttpServletRequestHandler_12417a4b7fd.java)
>>>>> at
>>>>> org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127)
>>>>> at
>>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>>>>> at
>>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>> at
>>>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>>>>> at
>>>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>>>>> at
>>>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
>>>>> at
>>>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>>>>> at
>>>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>>>>> at
>>>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
>>>>> at
>>>>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
>>>>> at
>>>>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>>>>> at
>>>>> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
>>>>> at java.lang.Thread.run(Thread.java:637)
>>>>> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException
>>>>> [at
>>>>> classpath:com/java/dse/cwp/eos/pages/Search.tml, line 130]
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:495)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form._$advised$onAction(Form.java:378)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form$onAction$invocation_12417a50156.invokeAdvisedMethod(Form$onAction$invocation_12417a50156.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:71)
>>>>> at
>>>>> org.apache.tapestry5.ioc.internal.services.LoggingAdvice.advise(LoggingAdvice.java:37)
>>>>> at
>>>>> org.apache.tapestry5.internal.transform.LogWorker$1.advise(LogWorker.java:54)
>>>>> at
>>>>> org.apache.tapestry5.internal.services.AbstractComponentMethodInvocation.proceed(AbstractComponentMethodInvocation.java:80)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form.onAction(Form.java)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form.dispatchComponentEvent(Form.java)
>>>>> at
>>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:910)
>>>>> at
>>>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1081)
>>>>> ... 52 more
>>>>> Caused by: java.lang.NullPointerException
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Loop.restoreStateFromStoredClientValue(Loop.java:457)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Loop.access$500(Loop.java:44)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:165)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Loop$RestoreStateFromStoredClientValue.execute(Loop.java:154)
>>>>> at
>>>>> org.apache.tapestry5.corelib.components.Form.executeStoredActions(Form.java:480)
>>>>> ... 62 more
>>>>>
>>>>>
>>>>> I would really appreciate some help understanding why this is broken.
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Levi
>>>>>
>>>>>
>>>>> xfile80303 wrote:
>>>>>>
>>>>>> Hello all,
>>>>>>
>>>>>> I'm seing some interesting behavior I hope you can help me sort out.
>>>>>>
>>>>>> I have a form which I would like to display an error message (custom)
>>>>>> should the form validation fail. I'd like to do this via AJAX since
>>>>>> the
>>>>>> contents of the form are created via AJAX and refreshing the page to
>>>>>> display this error message will lose this context.
>>>>>>
>>>>>> So, I have something like this:
>>>>>>
>>>>>> <t:zone t:id="nothingSelectedZone" id="nothingSelectedZone"
>>>>>> visible="${errorVisible}">
>>>>>> No items have been selected.
>>>>>> </t:zone>
>>>>>>
>>>>>> <t:zone t:id="resultsZone" id="resultsZone"
>>>>>> visible="${resultsVisible}">
>>>>>> <form t:id="parts" t:zone="nothingSelectedZone">
>>>>>> <input type="button" t:type="submit" value="Do It"/>
>>>>>> </form>
>>>>>> </t:zone>
>>>>>>
>>>>>> void onValidateFormFromParts()
>>>>>> {
>>>>>> if (isValid())
>>>>>> {
>>>>>> _parts.recordError("No items selected.");
>>>>>> }
>>>>>> else
>>>>>> {
>>>>>> _parts.clearErrors();
>>>>>> }
>>>>>> errorVisible = _parts.getHasErrors();
>>>>>> }
>>>>>>
>>>>>> Object onSuccessFromParts()
>>>>>> {
>>>>>> return otherPage;
>>>>>> }
>>>>>>
>>>>>> Object onFailureFromParts()
>>>>>> {
>>>>>> return nothingSelectedZone.getBody();
>>>>>> }
>>>>>>
>>>>>> If there's no error with validation, the success method gets called
>>>>>> fine,
>>>>>> and I am redirected to the otherPage.
>>>>>> If there is an error with validation, the nothingSelectedZone is
>>>>>> updated
>>>>>> and the error message is displayed.
>>>>>> However, if, after a validation error I try to re-submit the form,
>>>>>> nothing
>>>>>> happens at all. I've put breakpoints in my debugger on these three
>>>>>> methods and they don't get hit in this case. It's as if the form
>>>>>> submit
>>>>>> is not taking place after the initial validation error.
>>>>>>
>>>>>> I'd love some input.
>>>>>>
>>>>>> Thanks,
>>>>>>
>>>>>> Levi
>>>>>>
>>>>>>
>>>>>
>>>>> --
>>>>> View this message in context:
>>>>> http://n2.nabble.com/T5-1-AJAX-Form-Validation-tp3753039p3758403.html
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>>>>>
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>>>>>
>>>>>
>>>>
>>>>
>>>>
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>>>>
>>>
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>>
>>
>>
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