I've been tracking this problem; there's a timing issue when Tapestry
adds a hidden field to store the t:formdata; the DOM is being streamed
to characters after the <input> field is added to the DOM, but before
it is fully configured.  It's deeply tricky stuff.

On Fri, Apr 16, 2010 at 11:28 AM, Adam Derkey <adam.der...@gmail.com> wrote:
> Was this the right list to send this to? Should I send to the dev list or
> open a jira ticket?
>
> On Wed, Apr 14, 2010 at 3:58 PM, Adam Derkey <adam.der...@gmail.com> wrote:
>
>> Using Tapestry 5.2.0-SNAPSHOT
>>
>> I'm updating multiple zones after a select on Change event. The JSON
>> response is including an extra input field after a select field in one of
>> the zones I'm updating. The extra input is then showing up in the rendered
>> page in the browser. Why would tapestry be adding in an extra input field?
>> Is there a way to do this without the extra input being returned?
>>
>> I created this example using the quickstart app and send the entire project
>> if needed.
>>
>> Thanks
>> Adam
>>
>> /*
>>  * Form.java
>>  */
>> package com.test.pages;
>>
>> import com.test.model.GenericSelectModel;
>> import com.test.vo.SelectObj;
>> import java.util.ArrayList;
>> import java.util.List;
>> import org.apache.tapestry5.EventContext;
>> import org.apache.tapestry5.SelectModel;
>> import org.apache.tapestry5.ajax.MultiZoneUpdate;
>> import org.apache.tapestry5.annotations.Component;
>> import org.apache.tapestry5.annotations.Property;
>> import org.apache.tapestry5.corelib.components.Select;
>> import org.apache.tapestry5.corelib.components.Zone;
>> import org.apache.tapestry5.ioc.annotations.Inject;
>> import org.apache.tapestry5.ioc.services.PropertyAccess;
>> import org.apache.tapestry5.services.Request;
>>
>> /**
>>  *
>>  * @author aderkey
>>  */
>> public class Form {
>>
>>     @Inject
>>     private Request request;
>>
>>     @Inject
>>     private PropertyAccess propertyAccess;
>>
>>     @Component(id="selectValue1", parameters = {"model=select1Model",
>> "encoder=select1Model"})
>>     private Select select1;
>>
>>     @Property
>>     private SelectModel select1Model;
>>
>>     @Property
>>     private SelectObj selectValue1;
>>
>>     @Component(id="selectValue2", parameters = {"model=select2Model",
>> "encoder=select2Model"})
>>     private Select select2;
>>
>>     @Property
>>     private SelectModel select2Model;
>>
>>     @Property
>>     private SelectObj selectValue2;
>>
>>     @Component(id="select1ValueZone")
>>     private Zone select1ValueZone;
>>
>>     @Component(id="select2ValueZone")
>>     private Zone select2ValueZone;
>>
>>     void onActivate(EventContext ctx) {
>>         List<SelectObj> select1List = new ArrayList();
>>         select1List.add(new SelectObj(0, "0 pre ajax"));
>>         select1List.add(new SelectObj(1, "1 pre ajax"));
>>         select1List.add(new SelectObj(2, "2 pre ajax"));
>>         select1List.add(new SelectObj(3, "3 pre ajax"));
>>         select1List.add(new SelectObj(4, "4 pre ajax"));
>>         select1Model = new GenericSelectModel(select1List, SelectObj.class,
>> "text", "id", propertyAccess);
>>
>>         List<SelectObj> select2List = new ArrayList();
>>         select2List.add(new SelectObj(0, "0 pre ajax"));
>>         select2List.add(new SelectObj(1, "1 pre ajax"));
>>         select2List.add(new SelectObj(2, "2 pre ajax"));
>>         select2List.add(new SelectObj(3, "3 pre ajax"));
>>         select2Model = new GenericSelectModel(select2List, SelectObj.class,
>> "text", "id", propertyAccess);
>>     }
>>
>>     public Object onValueChangedFromSelectValue1(SelectObj selectObj) {
>>         System.out.println("onValueChangedSelectValue1");
>>         List<SelectObj> select2List = new ArrayList();
>>         select2List.add(new SelectObj(4, "4 post ajax"));
>>         select2List.add(new SelectObj(5, "5 post ajax"));
>>         select2List.add(new SelectObj(6, "6 post ajax"));
>>         select2List.add(new SelectObj(7, "7 post ajax"));
>>         select2Model = new GenericSelectModel(select2List, SelectObj.class,
>> "text", "id", propertyAccess);
>>
>>         if(request.isXHR()) {
>>             return new MultiZoneUpdate("select1ValueZone",
>> select1ValueZone.getBody()).add("select2ValueZone",
>> select2ValueZone.getBody());
>>         } else {
>>             return this;
>>         }
>>     }
>>
>> }
>>
>> Form.tml
>>
>> <body t:type="Layout" t:title="form" t:bodyId="formPage" xmlns:t="
>> http://tapestry.apache.org/schema/tapestry_5_1_0.xsd";
>> xmlns:p="tapestry:parameter">
>>     <form t:type="Form" t:id="form" t:clientValidation="false" action="#">
>>         <select t:type="Select" t:id="selectValue1" t:validate="required"
>> t:zone="select1ValueZone"/>
>>         <t:zone t:id="select1ValueZone" visible="false">Show</t:zone>
>>         <t:zone t:id="select2ValueZone"><select t:type="Select"
>> t:id="selectValue2" t:validate="required"/></t:zone>
>>     </form>
>> </body>
>>
>> JSON Response:
>> {"content":"","zones":{"select2ValueZone":"<select
>> id='selectValue2-127fe104b7d' name='selectValue2'><option value='4'>4 post
>> ajax<\/option><option value='5'>5 post ajax<\/option><option value='6'>6
>> post ajax<\/option><option value='7'>7 post ajax<\/option><\/select>
>> <input><\/input>","select1ValueZone":"Show"}}
>>
>>
>



-- 
Howard M. Lewis Ship

Creator of Apache Tapestry

The source for Tapestry training, mentoring and support. Contact me to
learn how I can get you up and productive in Tapestry fast!

(971) 678-5210
http://howardlewisship.com

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