Error Validation of a Dialog InputText Primefaces jsf - validation

Question

I have a DataTable and edit a listing you have to open the Dialog component with the respective values ​​that sends the selected object from theDataTable, but cannot open. I have noticed that the function is REQUIRED = "true" and also that no error is displayed, the only solution that helped me erase the function is REQUIRED.
How do I to bring up the Dialog component without taking the REQUIRED function. An example of the code:
<p:tab id="tab_listar" title="#{msg.labelListar}">
<h:form id="form_mostrar_listado">
<p:dialog id="ModificarLugar" header="Modificar Datos" widgetVar="LugarDialogo2"
modal="false" resizable="false" hideEffect="bounce" showEffect="explode">
<h:panelGrid id="ModificarLugar1" columns="2" cellpadding="5">
<h:outputText value="#{msg.labelCodigo}"/>
<h:outputText value="#{BeanLugar.objLugarMod.cod_lugar}"/>
<h:outputText value="#{msg.labelNombre}"/>
<p:inputText value="#{BeanLugar.objLugarMod.nombre}" id="nombre_lu_mod"
required="true" requiredMessage="#{msg.labelNoVacio}"
validatorMessage="#{msg.labelNoValido}"> </p:inputText>
<h:outputText value="#{msg.labelUbicacion}"/>
<h:panelGroup>
<p:selectOneMenu value="#{BeanLugar.objLugarMod.objPais.cod_pais}"
required="true" id="cod_pais_mod" effect="fade"
requiredMessage="#{msg.labelNoVacio}"
validatorMessage="#{msg.labelNoValido}">
<f:selectItem itemLabel="#{msg.labelEligePais}" itemValue=""/>
<f:selectItems value="#{Pais.cargarComboPais}"/>
</p:selectOneMenu>
<h:message showDetail="false" showSummary="true" for="cod_pais_mod"/>
</h:panelGroup>
<p:commandButton value="Cancelar" actionListener="#{BeanLugar.doiniciarModLugar()}"
update=":LugarTabView:form_mostrar_listado" icon="ui-icon-triangl-1-w"
immediate="true"> </p:commandButton>
<p:commandButton id="btn_actualizar" value="#{msg.btnActualizar}"
update=":LugarTabView:form_mostrar_listado"
actionListener="#{BeanLugar.doActualizaLugar()}"> </p:commandButton>
</h:panelGrid>
</p:dialog>
<p:panel id="datListadoLugar">
<h:outputText value="#{msg.labelListado}"/>
<h:panelGrid columns="3" cellspacing="10" width="100">
<p:commandButton value="#{msg.btnNuevo}" update="form_mostrar_listado"
actionListener="#{BeanLugar.doiniciarListadoLugar()}"/>
<p:commandButton value="#{msg.btnListar}" update="form_mostrar_listado"
actionListener="#{BeanLugar.doListarLugar()}"/>
</h:panelGrid>
<h:panelGrid columns="2" rendered="#{BeanLugar.sizeLugar ne '0'}">
<h:outputText value="#{msg.labelCantidad}"/>
<h:outputText value="#{BeanLugar.arrLugar.size()}"/>
</h:panelGrid>
<h:panelGrid columns="1" rendered="#{BeanLugar.sizeLugar ne '0'}">
<p:dataTable id="resListadoLugar" value="#{BeanLugar.doListarLugar()}" var="ls"
paginator="true" rows="5" paginatorPosition="both" rowsPerPageTemplate="5,10,15">
<p:column>
<f:facet name="header">
<h:outputText value="#{msg.labelLugar}"/>
</f:facet>
<h:outputText value="#{ls.nombre}"/>
</p:column>
<p:column>
<f:facet name="header">
<h:outputText value="#{msg.labelUbicacion}"/>
</f:facet>
<h:outputText value="#{ls.objPais.nomb_pais}"/>
</p:column>
<p:column>
<f:facet name="header">
<h:outputText value="#{msg.labelVer}"/>
</f:facet>
<p:commandLink title="Ver" action="#{BeanLugar.mostrarLugar(ls)}"
value="Ver" update=":LugarTabView:form_mostrar_listado:DetalleLugar"
oncomplete="LugarDialogo.show()"> </p:commandLink>
</p:column>
<p:column>
<f:facet name="header">
<h:outputText value="#{msg.labelEditar}"/>
</f:facet>
<p:commandLink title="Editar" action="#{BeanLugar.editarLugar(ls)}"
value="Editar"
update=":LugarTabView:form_mostrar_listado:ModificarLugar"
oncomplete="LugarDialogo2.show()"> </p:commandLink>
</p:column>
<p:column>
<f:facet name="header">
<h:outputText value="#{msg.labelEliminar}"/>
</f:facet>
<p:commandLink title="Eliminar" action="#{BeanLugar.eliminarLugar(ls)}"
value="Eliminar"
update=":LugarTabView:form_mostrar_listado:EliminarLugar"
oncomplete="LugarDialogo3.show()"> </p:commandLink>
</p:column>
</p:dataTable>
</h:panelGrid>
</p:panel>
</h:form>
</p:tab>

Answer 1

You are processing all form so JSF tries yo validate all components with required true. You have to tell commandLink what you want to process, for example:
<p:commandLink title="Editar" action="#{BeanLugar.editarLugar(ls)}"
value="Editar"
update=":LugarTabView:form_mostrar_listado:ModificarLugar"
oncomplete="LugarDialogo2.show()"
process="resListadoLugar"> // or the path of the component you want to process
</p:commandLink>