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:


-

Comments

Post a Comment

Popular posts from this blog

unity3d - Rotate an object to face an opposite direction -

i have object , b. when click on object b, rotates object b (a faces b). b doesn't face a. need following : when faces b, need face opposite direction. have code rotating @ b. how rotate face opposite direction after that? vector3 targetdirection = target - transform.position; float step = speed * time.deltatime; vector3 newdirection = vector3.rotatetowards (turretdome.transform.forward, targetdirection, step, 0.0f); turretdome.transform.rotation = quaternion.lookrotation (newdirection); you object facing object b, want inverse direction of object after that? objecta.transform.rotation = quaternion.inverse(objecta.transform.rotation) but lets assume example turretdome object a, (negate direction): turretdome.transform.rotation = quaternion.lookrotation (-newdirection); naturally, both of these snippets not show how smoothen rotation, seem know how use time.deltatime. just incase unsure, quaternion.lerp this
Read more

angular - Is it possible to get native element for formControl? -

i've got angular2 reactive form . created formcontrol s , assigned input fields by [formcontrol]=... . understand creates nativeelement <-> formcontrol link. my question: possible nativeelement formcontrol ? wanna myformcontrol.nativeelement.focus() i can share 1 terrible solution works me. in reactive forms can use either 1) formcontroldirective ts mycontrol = new formcontrol('') template <input type="text" [formcontrol]="mycontrol"> or 2) formcontrolname ts myform: formgroup; constructor(private fb: formbuilder) {} ngoninit() { this.myform = this.fb.group({ foo: '' }); } template <form [formgroup]="myform"> <input type="text" formcontrolname="foo"> </form> so these directives write patch like 1) formcontroldirective const originformcontrolngonchanges = formcontroldirective.prototype.ngonchanges; formcontroldirective.proto
Read more

javascript - Why jQuery Select box change event is now working? -

i working on product filters user select select box according his/her preference not getting selected value user in jquery. html code:- <select name="product_filter" id="product_filter"> <option value="price_low_first">price : low high</option> <option value="price_high_first">price : high low</option> <option value="latest">latest</option> <option value="popular">most popular</option> </select> jquery code: $(function () { $("#product_filter").change(function () { alert("hi") var selectedtext = $(this).find("option:selected").text(); var selectedvalue = $(this).val(); alert("selected text: " + selectedtext + " value: " + selectedvalue); }); }); hi believe code perfect. once please check jquery.min.js
Read more