rich:columns & dynamic components binding

midnighter123 Dec 24, 2008 6:30 AM

Hi,

I changed code from examples:

<rich:dataTable value="#{dataTableScrollerBean.model}" var="model" width="750">
<f:facet name="header">
<h:outputText value="Cars Available"/>
</f:facet>
<rich:columns value="#{dataTableScrollerBean.columns}" var="columns"
index="ind" sortBy="#{model[ind].price}">
<f:facet name="header">
<h:outputText value="#{columns.header}"/>
</f:facet>
<h:outputText binding="#{dataTableScrollerBean.text}"/>
<h:outputText value="#{model[ind].mileage} miles "/>
<h:outputText value="#{model[ind].price}$"
style="font-style:italic;"/>
</rich:columns>
</rich:dataTable>

in backing bean method was add

private HtmlOutputText retVal;

public HtmlOutputText getText()
{
if (retVal == null)
{
retVal = (HtmlOutputText) FacesContext
.getCurrentInstance()
.getApplication()
.createComponent(HtmlOutputText.COMPONENT_TYPE);
FacesContext ctx = FacesContext.getCurrentInstance();
ELContext elCtx = ctx.getELContext();
ExpressionFactory ef = ctx.getApplication().getExpressionFactory();
ValueExpression ve = ef.createValueExpression(elCtx, "#{model[ind].model}", String.class);
retVal.setValueExpression("value", ve);
}
return retVal;
}

but binding doesn't work. OutputText with binding doesn't visible. What is wrong? This is a bag?

1. Re: rich:columns & dynamic components binding

andrei_exadel Dec 29, 2008 7:01 AM (in response to midnighter123)
Hi,

The problem is that you use outputText bound on the same bean variable.
I detected that outputText displays only for the last column in this case.

So, don't use the same variable. Create the new htmlOutput instance for each column:

public HtmlOutputText getText() { HtmlOutputText retVal = null; if (retVal == null) { retVal = (HtmlOutputText) FacesContext.getCurrentInstance() .getApplication().createComponent( HtmlOutputText.COMPONENT_TYPE); FacesContext ctx = FacesContext.getCurrentInstance(); ELContext elCtx = ctx.getELContext(); ExpressionFactory ef = ctx.getApplication().getExpressionFactory(); ValueExpression ve = ef.createValueExpression(elCtx, "#{model[ind].model}", String.class); retVal.setValueExpression("value", ve); } return retVal; }

If you have not to create new HtmlOutputText variable you can use expression for outputText that references to bean static variable.
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