JSF2 DataBinding Problem

Question

I have a little issue regarding submit of forms in jsf 2:

In my webapp I got a function that updates entities in my db. This function gets the relative data out of a managed bean.

So, my issue is that changes in my view are not passed to the managedBean. To make that clear for you, here an example:

 public String updateProject() {
  projectService.updateProject(projectData.getProjectDTO());
  return ("overview.xhtml");
 } 

prjectData is my ManagedBean. This one doesn't work! No updates are been made.

 public String deleteProject() {
  projectData.getProjectDTO().setDeleted(true);
  projectService.updateProject(projectData.getProjectDTO());
  return ("overview.xhtml");
 }

Here, when I change a value by code it works! So I guess my values out of the view are not passed to my managedBean.

Where could be a mistake? Is there maybe an action I have to invoke to make the data pass my view to the managedBean?

---

Answer to Gabor's comment:

My page looks like:

<h:form>
 <h:commandLink action="#{controller.updateProject}" value="Edit" />
 <h:outputLabel for="title" value="Titel" /> 
 <h:inputText id="title" value="#{projectData.projectDTO.title}" />
</h:form>

If I change the title here and press update nothing happens ;-)

---

My Controller looks like:

@ManagedBean
@RequestScoped
public class Controller {

    @ManagedProperty(value = "#{projectData}")
    private ProjectData projectData;
...

For unknown reason my debug mode in eclipse doesn't work anymore it ignores my breakpoints all the time. I gonna fix that and then I'll check about the instances. Sry -.-

Answer 1

Either projectData or projectDTO is not the right instance as you expect it to be. It's a completely different instance. Aren't you eagerly recreating/overriding beans? Don't you have multiple beans in the scope? Shouldn't it for example be #{controller.projectData.projectDTO.title}? Shouldn't the projectData instance in the controller be a managed property?

Answer 2

Is your projectData bean also RequestScoped? Try to change to ViewScoped. RequestScoped beans are recreated for each request, also ajax request. And what is scope of projectService?