How to passing value of hiddenFiled as parameter for actionbean? - jsf

Question

My page display list Category Name. i want to when user clicks category name , it will
display list product by category name. in this code, i want to passing CateogryId as value of h:inputHidden. it's same as <h:inputText value="#{produtBean.categoryId}"></h:inputText> .
Tkanks you for reading !
Code from xhtml
<ui:repeat value="#{productBean.listCategory}" var="c">
<h:form>
<h:inputHidden value="#{productBean.categoryId}" ></h:inputHidden>
<h:commandLink value="#{c.name}" action="#{productBean.listProductByCt}" ></h:commandLink>
</h:form>
</ui:repeat>
Code from ProductBean
public String listProductByCt()
{
if(categoryId==0)
{
return "index";
}
listProduct = new ProductsDB().listProducts(categoryId);
return "product";
}

Answer 1

The <h:inputHidden> doesn't work that way. The value you attempted to "pass" into it is also kind of weird. It's the same value for every item of the list. You should be using <f:param> instead. You probably also want to pass the #{c.id} or #{c.name} instead.
<h:commandLink value="#{c.name}" action="#{productBean.listProductByCt}">
<f:param name="categoryId" value="#{c.id}" />
</h:commandLink>
With
#ManagedProperty("#{param.categoryId}")
private Integer categoryId; // +setter
Alternatively, if you're already on Servlet 3.0 / EL 2.2, then you can just pass it as method argument.
<h:commandLink value="#{c.name}" action="#{productBean.listProductByCt(c.id)}">
with
public String listProductByCt(Integer categoryId) {
// ...
}
See also:
How can I pass selected row to commandLink inside dataTable?