java.lang.NullPointerException at org.primefaces.component.datatable.feature.FilterFeature.filter

Question

I\'m trying create a filter to one dataTable. I want that filter works with all keywords contained in datatable.

I am following examples at: http://www.primefaces.or

Answer 1

You must put your p:datatable inside h:form like this.

    <h:form id="form-list-equipamentos">
        <p:dataTable id="equipamentos" 
                     var="equipamento" 
                     value="#{equipamentoBean.equipamentos}" 
                     widgetVar="equipamentoTable" 
                     filteredValue="#{equipamentoBean.equipamentosFiltrados}"
                     emptyMessage="Nenhum equipamento encontrado" 
                     resizableColumns="true">

            <f:facet name="header">
                Lista de equipamentos
                <!--            DESLIGAR COLUNAS -->
                <p:commandButton id="toggler" 
                                 type="button" 
                                 value="Colunas"
                                 style="float:right" 
                                 icon="ui-icon-calculator" />
                <p:columnToggler datasource="equipamentos" 
                                 trigger="toggler" />

                <!--            BUSCA -->
                <p:outputPanel>
                    <h:outputText value="Busca em todos os campos:"/> 
                    <p:inputText id="globalFilter"
                                 onkeyup="PF('equipamentoTable').filter()" 
                                 style="width:250px"
                                 placeholder="Palavra-chave para busca" />
                </p:outputPanel>            
            </f:facet>

            <p:column filterBy="#{equipamento.nome}" 
                      sortBy="#{equipamento.nome}" 
                      headerText="Nome" filterMatchMode="contains">
                <h:outputText value="#{equipamento.nome}"></h:outputText>
            </p:column>

        </p:dataTable>
    </h:form>

Also watchout that your equipamentoBean is in proper scope (mine: javax.faces.view.ViewScoped).

OT: I would recommend you to "id" the f:form tag as this gives you the possibility to update it after a "create" form (outside this form!) has added a record:

    <h:form>
    ....
        <p:commandButton
            type="submit"
            value="Add something"
            action="#{someBackingBean.addSomething()}"
            update=":master:form-list-equipamentos:equipamentos"
            />
    </h:form>

The id="master" is in my "master" template where all other views derive from:

    <h:body>
        <pm:page id="master">
        ...
        </pm:page>
    </h:body>