Value binding an object to the request scope

Question

Hello,
In one page I have the results conducted from doing a search. Each row displayed in that page represents a user, and there is a link within each row that will facilitate the editing of that user in another page.
Here is the code for the link in the "results" page:
<h:column>
     <h:commandLink id="editLink" action="#{pc_Search_user_results.editUser}">
          <h:outputText value="Edit" />
          <f:param name="userId" value="#{user.id}" />
     </h:commandLink>
</h:column>My second page (that is, the one that will allow edits to be made) expects a "User" instance to be available as part of the request:
<managed-bean>
  <managed-bean-name>pc_EditUser</managed-bean-name>
  <managed-bean-class>pagecode.jsp.EditUser</managed-bean-class>
     <managed-bean-scope>request</managed-bean-scope>
     <managed-property>
          <description>
                    Should be an instance of the user that was selected from
                    the search results page.
          </description>
          <property-name>user</property-name>
          <value>#{requestScope.user}</value>
     </managed-property>
</managed-bean>I have that variable defined in the EditUser backing bean for the "edit" page with the appropriate getter/setter. The problem is that instead of getting a "User" instance in the bean, I'm getting a null value for it instead. I'm trying to set the instance in the method associated with the command link in my "results" page. That is, in my SearchUserResults bean, which is the backing bean for my "results" page, I have the following code:
public String editUser() {
        HtmlCommandLink link = this.getCommandLinkById("editLink");
        String id = null;
        Map map = link.getAttributes();
        List children = link.getChildren();
        for (int i = 0; i < children.size(); i++) {
            if (children.get(i) instanceof UIParameter) {
                UIParameter parm = (UIParameter) children.get(i);
                id = (String) parm.getValue();
                break;
        User user = null;
        Iterator iterator = this.users.iterator();
        while (iterator.hasNext()) {
            user = (User) iterator.next();
            if (id.equals(user.getId())) {
                break;
        facesContext.getApplication()
                    .createValueBinding("#{requestScope.user}").setValue(
                        facesContext, user);
        return "success";
    }All I want to get in my backing bean for the "edit" page is a valid "User" instance, which should be set when a new instance of EditUser is created per request. Obviously, I'm not understanding what is happening for this simple scenario. Please chime in with suggestions or explanations! Thanks.
Jeff

Answer 1

Frank,
Thanks for your reply.
Yes. I have dragged the collection called "GetYearsDataRequest" (which has 2 attributes) to the view as to create new form with submit button. Then i dragged the method on the button to bind the method called "GetYears".
But actually the method GetYears is required complex type "GetYearsDataRequest" as input. I see the collection and the object/complex types are seperated form visual perspective.
I tried dragging method to create parameter form, but unfortunately it created GetYearsDataRequest as text field rather I would like to see its attribute in the form.
I am not sure how to bind the attributes to the input object/complex type (GetYearsDataRequest). I think I am missing this step. Pls help me on this.
I hope I answered to your question.
Please let me know if you need more info.l
Thanks!
Rajasekar.