jsf 2 - Button action called upon second click -

jsf 2 - Button action called upon second click -

i have 2 command buttons , 1 select 1 menu. need phone call bean method depending on buttons selected , selected item in menu.

<h:form id="form1"> <h:outputlabel value="menu:" /> <h:commandbutton value ="en" action="#{bean.exec}" > <f:setpropertyactionlistener target="#{bean.menu}" value='en' /> </h:commandbutton> <h:commandbutton value ="fr" action="#{bean.exec}" > <f:setpropertyactionlistener target="#{bean.menu}" value='fr' /> </h:commandbutton> <h:outputlabel value="id:" /> <h:selectonemenu value="#{bean.id}"> <f:selectitems value="#{bean.idlist}" /> <f:ajax listener="#{bean.exec}" render ="form1" /> </h:selectonemenu> </h:form>

however, although first button updates properties , calls action method, sec button gives me next message

warning: facesmessage(s) have been enqueued, may not have been displayed

and view doesn't updated on fist click. however, on sec click, properties updated , view.

how caused , how can solve it?

i did see log, dont understand error: shows: form1:j_idt124: validation error: value not valid value , where?

it's easier identify value if give input components id , attach <h:message> them follows:

<h:outputlabel for="id" value="id:" /> <h:selectonemenu id="id" value="#{bean.id}"> <f:selectitems value="#{bean.idlist}" /> <f:ajax listener="#{bean.exec}" render ="form1" /> </h:selectonemenu> <h:message for="id" />

this way form1:id label instead of form1:j_idt124. alternatively, can specify label of input component:

<h:selectonemenu label="id" ... />

as "value not valid" error, error when selected value not match 1 of available values during processing form submit. can in turn happen when property behind #{bean.idlist} has incompatibly changed during processing form submit. can in turn happen when bean request scoped. putting bean in view scope should prepare it.

see also: validation error: value not valid

button jsf-2