问JSF和Ajax更新ui:重复在不从数据库加载数据的情况下不工作

EN

//This is my jsf page
<h:panelGroup layout="block" id="panelBlock"> 
    <ui:repeat value="#{projectBean.projectList}" var="project">
        <h:outputText value="#{project.title}" />
        <h:outputText value="#{project.content}" />
    </ui:repeat>
</h:panelGroup>

<h:commandLink action="#{ProjectBean.save()}">
    <f:ajax execute="@form" render="panelBlock" />
</h:commandLink>

#This is my ViewScoped

private Project project
private List<Project> projectList;

@PostConstruct
private void init() {
  projectList = projectService.findAll();
}
# Setter and getter

public void save() {
   projectService.save(project)
}

#it works only after saving it i load the data from the database
public void save() {
   projectService.save(project)
   projectList = projectService.findAll();
}