Dyna FOrm - Id or Name attribute population through model

[Anantha]

Hi Oleg,

As advised, I am dropping my question here. We are doing a POC based on the Client's requirement using DynaForm to render Dynamic UI loading the configuration from Data Base.

Please refer this HTML code:

<pe:dynaFormControl type="input" for="txt" styleClass="dynaControl">
<p:inputText id="txt" value="#{data.value}" required="#{data.required}" maxlength="#{data.maxLength}" placeholder="#data.placeHolder}"/>
</pe:dynaFormControl>

The above code renders me the id as - mainForm:dynaForm:r1c1reg:txt

I know JSF generates the id and in dynaform based on the component order and type it's generating (mainForm:dynaForm:r1c1reg:). But after this prefix we have this txt. This txt is hard coded in the HTML. I would like to have my own id here populated from the model class. I am trying to configure the id or name attribute through the model class to avoid the rendering of - id="mainForm:dynaForm:r1c1reg:txt" name="mainForm:dynaForm:r1c1reg:txt". So, that we can do our java script stuff based on the id/name that we sent from the model class. I am trying something like this

<pe:dynaFormControl type="input" for="#{data.id}" styleClass="dynaControl">
<p:inputText id="#{data.id}" name="#{data.name}" value="#{data.value}" required="#{data.required}" maxlength="#data.maxLength}" placeholder="#{data.placeHolder}"/>
</pe:dynaFormControl>

Please look at the for, id and name attributes in the above code. But I end up with the following error:
Caused by: java.lang.IllegalArgumentException: Empty id attribute is not allowed
at javax.faces.component.UIComponentBase.validateId(UIComponentBase.java:542)
at javax.faces.component.UIComponentBase.setId(UIComponentBase.java:369)
at com.sun.faces.facelets.tag.jsf.ComponentTagHandlerDelegateImpl.assignUniqueId(ComponentTagHandlerDelegateImpl.java:369)

Is there a way to solve my problem statement? I would to like to have id/name defined for each of my control rendered through my model class. Let me know your thoughts.

Thanks in advance.

[Oleg]

Hello,

The question is not DynaForm related. And not PF Extensions related. In JSF you can not use EL expressions for ID. So, id=#{data.id} is not allowed in JSF. You can try to use c:set to overcome this issue and set dynamic IDs. I've blogged about this in my blog a couple of years ago. Take a look at last example http://ovaraksin.blogspot.de/2010/07/ou ... c-and.html I hope it will help you, but I'm not sure regarding data iteration components like DataTable, Tree, DynaForm because JSTL (e.g. c:set) is applied at an early JSF phase. In this early phase, the data iteration component didn't evaluate their childern yet. Simple try it.