jsf - Dynamic <ui:include src> depending on <ui:repeat var> doesn't include anything -


i new jsf , struggling dynamicaly rendering included pages. code looks this:

menubean

@viewscoped public class menubean implements serializable {      private menuitem[] menuitems = new menuitem[] {         new menuitem("page_1", "/page_1.xhtml"),         new menuitem("page_2", "/page_2.xhtml"),     };      private string selecteditemlabel;      //... }

menuitem

public class menuitem implements serializable {      private string label;     private string page;      //... }

index.xhtml

    <ui:repeat var="menuitem" value="#{menubean.menuitems}">                                             <h:panelgroup rendered="#{menubean.selecteditemlabel eq menuitem.label}" layout="block">             <h:outputtext value="#{menubean.selecteditemlabel}" />                                           <ui:include src="#{menuitem.page}" />                                                    </h:panelgroup>                                                                          </ui:repeat>

the result 2 buttons rendered. whenever click button label inside conditionaly rendered panelgroup appears included page doesn't. if change 'menuitem1' var first ui:repeat works unpredictable. example if hardcode setselecteditemlabel parameter 'page_1' when click button_1 page_1 displayed if click button_2 page_2 (!?) displayed...

you're facing view build time vs view render time problem. same problem answered in detail in jstl in jsf2 facelets... makes sense? in answer, replace "jstl" "ui:include". point, <ui:repeat> runs during view render time, while <ui:include> has run during view build time before.

you'll understand solution replace <ui:repeat> tag runs during view build time, such jstl <c:foreach>.

note don't guarantee solve concrete functional requirement you've in mind. using jstl may have undesirable "side effects" (which explainable, understandable , workaroundable).

see also:


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