Mikel Martin

Many thanks for the answer.

As I am a newbie in J.S.F. I have been carefully examining your answer, but I got stucked in the last part of the answer (f:ajax).

I have written the following for the drop-down menu:

<h:selectOneMenu id="lang_menu" > <f:selectItem itemValue="item1" itemLabel="ENGLISH" /> <f:selectItem itemValue="item2" itemLabel="CASTELLANO" /> <f:ajax execute="@this" listener="#{languageControl.firstRendered}" render="english spanish" /> </h:selectOneMenu>

being english and spanish of the render attribute the id´s of the panel group when the firstRender method is false or true respectively.


But I can´t figure out how to make one or other render calling the firstRendered method in f:ajax

Many thanks

Hello,

I am trying to find out a way to render different xhtml pages according to the selected value.

In my web it would be to render the page in a language or other depending of the value selected in the drop-down menu.

I tried the following:

In the XHTML I would use the UIComponent SelectOnMenu with different values related to the different languages.
<h:selectOneMenu id="lang_menu" value="#{languageControl.languageOption}" > <f:selectItem itemValue="item1" itemLabel="ENGLISH" /> <f:selectItem itemValue="item2" itemLabel="CASTELLANO" /> </h:selectOneMenu>

And the Managed Bean:
@ManagedBean @RequestScoped public class languageControl { private String languageOption; public languageControl() { } public String getLanguageOption() { if(languageOption=="item1"){return "index.xhtml";} else { return "index_ES.xhtml";} } public void setLanguageOption(String languageOption) { this.languageOption = languageOption; } }

This does not work. My question is how could I render the two differents XHTML according to the different option values of the UIComponent.

Thank you.

I have sorted at the moment wit the action attribute in the commandButton that references to a method

in the managed bean whose body holds the facade object and the create method and return a new response page.

I think I need to become clearer about the navigation in J.S.F.

Hi,

I made a form with the AJAX function.
Something like this:

<h:commandButton id="register" value="SEND">
<f:ajax execute="firstName lastName" render="output"/>
</h:commandButton>

I set the entity file, the facade file with the persistence unit and the J.S.F. Managed Bean with
a injection of the facade .

I can send the form resulting in the AJAX efect, nothing is wrong here; but the data of the form is no stored in the database
generated by the entity.

Am I missing something in the command button where the AJAX function is nested?

Thanks

Thank you for the answer.


As far as I understand, the Managed Bean as part of the View Model don´t access JPA Domain Model but it is injected a session bean that holds public methods to create, edit, remove and find entities. In this indirect way the JSF XHTML can reference entities and hence the database.

Anyway, what I am trying to find is what is the best way in the JavaServer Faces framework, to access or to create a database from the front end (XHTML).

Thank you for the answer.

After some research I see the process of storing data of input components of a form.

A entity class is created -> a session facade is generated for that entity -> a J.S.F. managed bean is created with a reference to the facade through the use of dependency injection
-> a J.S.F. webpage is created with the values of the form component refering to the properties and methods of the J.S.F. managed bean.

But I have still the question of where are the tables generated by the entities.
How can I access those tables to check the information sent through the form?

I am new to Java Server Faces.

I set a XHTML page with a form in it, using the form component of J.S.F.

On the other hand I set a JPA entity with properties
and a JPA controller generated from that entity.

My question is how I connect the form of the XHTML with the properties of the JPA entity to persist
the data submitted through the form.

I need to invoke the JPA controller methods from the value attribute of the form component?

Could I see a example of the process? FORM COMPONENT -> J.P.A. ENTITY PROPERTIES


Thank you

I am trying to implement a template and I think it is very simple and perfect,
but still not working.

The code of the template is:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">


<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:fn="http://java.sun.com/jsp/jstl/functions"
xmlns:f="http://java.sun.com/jsf/core">

<h:head>
<title><ui:insert name="windowTitle"/></title>
<h:outputStylesheet library="css" name="styles.css"/>
<!--<link href="resources/styles.css" rel="stylesheet" type="text/css" ></link>-->
</h:head>

<h:body>
<div id="container">
<div id="header">
<ui:insert name="header">
Default header goes here
</ui:insert>
</div>


<div id="sidebarLeft">
<ui:insert name="sidebarLeft">
Default sidebarLeft goes here
</ui:insert>
</div>

<div id="sidebarRight">
<ui:insert name="sidebarRight">
Default sidebar right
</ui:insert>
</div>
<div id="footer">
<ui:insert name="footer">
Footer
</ui:insert>
</div>
<ui:debug/>
</div>
</h:body>
</html>

and the code of the user is:


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">


<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:fn="http://java.sun.com/jsp/jstl/functions"
xmlns:f="http://java.sun.com/jsf/core">

<h:head>
<title>IGNORED</title>
</h:head>

<h:body>
<ui:composition template="/templates/masterLayout.xhtml">



</ui:composition>
</h:body>
</html>

The position of the files are:
- templates
---masterLayout.xhtml
- outlets.xhtml

The output should be the full written in the template, but nothing shows. The page is blank

What is wrong?