submit only some fields

[lcurros]

hello!
I am working with richfaces 3.2.0.GA.

I have one page with one form. The form has several fields to store in my bean when I click the mainButton. But inside the form there are one specificField that I use to build with ajax a dynamicList, so when I click in in a ajaxLink then I put a new item in the dynamicList.

Here is my code:

<a4j:form id="myForm">
.....................
.... form fields ....
.....................

 <h:inputText id="specificField" value="#{myBean.specificField}" />


 <a4j:commandLink id="ajaxLink"
 action="#{myBean.addItem}"
 reRender="dynamicList">
 <s:conversationId />
 </a4j:commandLink>

 <a4j:outputPanel id="myOutputPanel" ajaxRendered="true" >
 <rich:orderingList id="dynamicList" value="#{myBean.list}" var="r">
 <rich:column>
 <f:facet name="header">
 <h:outputText value="HEADER"/>
 </f:facet>
 <h:outputText value="#{r.property}"/>
 </rich:column>
 </rich:orderingList>
 </a4j:outputPanel>

..........................
.... more form fields ....
..................... .....
 <a4j:commandButton id="mainButton"
 action="#{myBean.saveMyForm}">
 <s:conversationId/>
 </a4j:commandButton>
</a4j:form>

The problem is that validation errors of other fields (except specificField ) cause not to rerender the list correctly. If no validation errors the list rerenders fine. So I have two question for you?


1. Is posible to submit only a few values with a4j:commandLink, or similar component?
2. If not, is possible to force rerender of dynamicList even if fails validation of other fields?



Thanks in Advance

[sergeysmirnov]

DO NOT cross-post.

http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4154412#4154412

[lcurros]

Thanks for your help, Sergey

I have just read about ajaxSingle=true. I read that using it only current component will be submited. So if I put in commandLink the value of specificField wont be submited, is this true?
Can I use actionparam to send this value to server in this way?:

<a4j:commandLink id="ajaxLink"
 ajaxSingle="true"
 action="#{myBean.addItem}"
 reRender="dynamicList">
 <a4j:actionparam name="n" value="#{myBean.specificField}" />
 <s:conversationId />
</a4j:commandLink>

I was thinking in use a nested form with only this field inside. Is this possible?

P.S. Sorry for the cross post. I mixed up putting in this forum, I thought the right one was Richfaces. My apoligies.

[sergeysmirnov]

Hmm? Where did you read that?

ajaxSingle - boolean attribute which provides possibility to limit JSF tree processing(decoding, conversion/validation, value applying) to the component which send the request only.

1) the whole form is submitted
2) only component marked with ajaxSingle="true" is processed.

The result - the validation rules on other components are invoked, because their are not processed, but not because of their are not submitted.

Sure, you can use a4j:actionParam as well as f:param to pass some data together with commandLink. However, you also can point to some of the form components if you want to add them to the processing.

Like that:

<%-- will be excluded --%>
<h:inputText id="blahblah" required="true" ...... />

<%-- will be included --%>
<h:inputText id="foo" ...... />
...
<%-- will be included --%>
<h:inputText id="bar" ...... />

<a4j:commandLink id="ajaxLink"
 ajaxSingle="true"
 process="foo, bar"
 ........
</a4j:commandLink>

[lcurros]

Thanks Sergey, I confused myself with ajaxSingle=true ;)
now I understand a bit more of AJAX
Your solution works perfect for me.
I am using process to update values that I need.

Another alternative that worked for me is to nest other a4j:form and surround this last with a4j:region. In this form I put only the fields I need in my ajax request.

<a4j:form id="mainForm">
.....
 <%-- will be excluded --%>
 <h:inputText id="blahblah" required="true" ...... />
.....
 <4j:region id="myRegion">
 <4j:form id="ajaxForm">


 <%-- will be included --%>
 <h:inputText id="foo" ...... />
 ...
 <%-- will be included --%>
 <h:inputText id="bar" ...... />

 <a4j:commandLink id="ajaxLink"
 ajaxSingle="true"
 process="foo, bar"
 ........
 </a4j:commandLink>

 </a4j:form>
 </a4j:region>
 ....
</a4j:form>

Could be any problem with this?

[daniel.soneira]

Nesting forms is a BAD idea indeed :) Never do that.

You can have multiple forms on one page - but DON'T nest them.