Primefaces filterBy和sortBy为空且未评估EL

Question

I am simply putting my Primefaces column tag inside a tagged wrapper like the following, however, the sortBy and filterBy EL expressions are not being calculated properly and not being passed on to the load method in my LazyModel.

Basically, I have the following tag ex:column:

<ui:composition
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"  
xmlns:p="http://primefaces.org/ui"
xmlns:ang="http://ang.com/jsf/facelets">

<p:column headerText="#{label}" sortable="#{sort}" sortBy="#{property}" filterBy="#{property}" filterable="#{filter}" filterMatchMode="#{filterMatchMode}">
    <h:outputText value="#{property}" />
</p:column>

In my main piece of code I am doing the following:

<p:dataTable id="mainTable" widgetVar="tblTable" var="c" 
      value="#{applicationBean.lazyModel}" lazy="true" 
      paginatorTemplate="{FirstPageLink} {PreviousPageLink} {CurrentPageReport} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}" 
       paginator="true" rows="10" style="margin-bottom:20px" 
       selectionMode="single" selection="#{applicationBean.selected}"
       paginatorPosition="bottom" rowKey="#{c.id}">

      <ex:column label="First Name" property="#{c.firstName}" 
          filter="true" sort="true" filterMatchMode="contains" />

However, when my method load data is being called in my Lazy Load bean, the sortBy and filterBy column are being passed as "property" instead of "firstName".

public List<T> load(int first, int pageSize, String sortField, SortOrder sortOrder, Map<String,Object> filters)

Any ideas why the EL expression is not being calculated in the filterBy and sortBy inside a tag?

Just for your info, the column is rendered properly. I can see all the content inside the table, however when I click to sort or filter I get the exception that property does not exist.

I tried to play with the field="#{property}" instead of sortBy and filterBy, however, it just works for the sortBy; filter by is still coming empty when I use the field attribute.

Answer 1

Solution

Make sure your tag use the 3 elements: field, sortBy and filterBy; all these elements just receive the name of the field and not the var/bean.

XHTML:

<ex:column label="First Name" var="#{c}" field="firstName" 
     filter="true" sort="true" filterMatchMode="contains" />

Component:

<p:column headerText="#{label}" field="#{field}" sortBy="#{field}"
    filterBy="#{field}" sortable="#{sort}" filterable="#{filter}"
    filterMatchMode="#{filterMatchMode}">
        <h:outputText value="#{var[field]}" />
</p:column>