[axinixe]

hi all,

im trying to make a web page where i get data from a datamodel and put it in a datadable,
but somehow it aint working. Can u help me?

datatable code:

        <h:dataTable rows="2" value="#{ProductBean.lijstProducten}" binding="#{ProductBean.lijstProducten}" rendered="true" var="product" id="producten">
            <h:column>
            <h:outputText value="Title"/>
            <h:outputText value="#{product.naam}"/> 
            </h:column>
            <h:column>
            <h:outputText value="Prijs"/>
            <h:outputText value="#{product.prijs}"/> 
            </h:column>
        </h:dataTable>

ProductBean code:

public final class ProductBean extends Object {

    DataModel lijstProducten = new ListDataModel();
    DataModel lijstPrijzen = new ListDataModel();
    product productje;
    
    public ProductBean() {
        super();
        productje = new product("haha","100");
        lijstProducten.setWrappedData(productje);
    }
    public DataModel getLijstProducten()
    {
        return lijstProducten;
    }
    public void setLijstProducten(Object data)
    {
        lijstProducten.setWrappedData(data);
    }
}

Product code:

public class product
{
   private String naam;
   private String prijs;
   
   public product(String n,String p)
   {
      naam=n;
      prijs=p;
   }
   
   public String getPrijs() { return prijs; }
   public String getNaam() { return naam; }
   public void setPrijs(String p) { prijs = p; }
   public void setNaam(String n) { naam=n; }
}

thanks in advance,
grtz

[Riyad Kalla]

Moving to OT > Soft Dev

[arjan.tijms]

[offtopic]

@axinixe: Although the structure of your code is still clear, maybe you’d beter not use Dutch variable names, especially not when asking for help on an international forum.
[/offtopic]

[Hewittch]

Hi, here are a few remarks:

– Of course your ListDataModel is a Collection?
– Why force rows=”2″ in the datatable declaration? It is supposed to be dynamic and depend on your collection’s size
– Is binding=”#{ProductBean.lijstProducten}” really necessary? I have 2 datatables who behave fine without it.

Best regards.
ERO

[shomprabu]

public ProductBean() {
super();
productje = new product(“haha”,”100″);
List productjes = new ArrayList();
productjes.add(productje);
lijstProducten.setWrappedData(productjes);
}

-Should work, if u have many products just keep adding to the List producjes. But the jsf u have written will repeat the title [Table Header]. To avoid that use facet header.

<h:dataTable value=”#{ProductBean.lijstProducten}” var=”product” id=”producten”>
<h:column>
<f:facet name=”header”>
<h:outputText value=”Title”/>
</f:facet>
<h:outputText value=”#{product.naam}”/>
</h:column>
<h:column>
<f:facet name=”header”>
<h:outputText value=”Prijs”/>
</f:facet>
<h:outputText value=”#{product.prijs}”/>
</h:column>
</h:dataTable>

Secondly the way u did binding was incorrect. U can bind only to UIComponents, for dataTable bind it to UIData. So u Bean class should have

UIData productUIData = null;
have setter and getter Method for it.
Binding is required only when u require in Bean the instance of DataTable Components. Since the dataTable, the content which u render is static text, binding is not necessary

-Shom

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