jsf 2.2 - Params of button always empty even after clicking jsf -
i opening modal has form in it. trying check if button clicked or not #{empty param['buttonid']}. shows empty when clicked.
<div class="modal fade" jsf:id="datareset"> <div class="modal-dialog"> <form jsf:id="reset-data-form" class="form-horizontal"> <div class="modal-content"> <div class="modal-header"> <h4 class="modal-title">modal header</h4> </div> <div class="modal-body"> <div class="form-group"> <label for="inputemail" class="col-sm-3 control-label">email</label> <div class="col-sm-9"> <input type="text" class="form-control" jsf:id="inputemail" jsf:value="#{dataresetfacade.dataresetemail}" name="inputemail" /> <h:message for="inputemail" p:class="error-msg"/> </div> </div> </div> <div class="modal-footer"> <button class="btn btn-default" data-dismiss="modal">#{msg['general.button.cancel']}</button> <button class="btn btn-primary" jsf:id="reset-data-button" jsf:action="#{dataresetfacade.resetdata}">submit <f:ajax execute="@form" render="@form aaa bbb messages" onevent="close"/> </button> <h:outputtext id="aaa" value="#{not empty param['reset-data-button']}"/> <h:outputtext id="bbb" value="#{empty param['reset-data-button']}"/> </div> </div> </form> </div> </div> am doing thing wrong.
you did not specify right request parameter name there. request parameter name jsf component's client id. client id of jsf input , button component represented html element's name attribute. can find out looking @ jsf-generated html output via rightclick, view source in webbrowser.
given current view, that'll below:
<button name="reset-data-form:reset-data-button" ... /> alter parameter names accordingly:
<h:outputtext id="aaa" value="#{not empty param['reset-data-form:reset-data-button']}" /> <h:outputtext id="bbb" value="#{empty param['reset-data-form:reset-data-button']}" /> alternatively, bind jsf uicomponent instance unique variable name in facelet scope using binding attribute , let jsf evaluate uicomponent#getclientid().
<button jsf:binding="#{resetbutton}" ... /> ... <h:outputtext id="aaa" value="#{not empty param[resetbutton.clientid]}" /> <h:outputtext id="bbb" value="#{empty param[resetbutton.clientid]}" /> note: not bind bean property. above code as-is.
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