how to do edit and new by using the same xhtml page

[tienlantri]

Hi,
I have a page xhtml who list all the operations. On this page, we can open another page to create new operation by clicking on a button. We can also edit a selected operation.

So I define the navigation in listOperation.page.xml

<navigation from-action="#{gestionOperation.editOp(operation.id)}">
     <redirect view-id="/pages/admin/detailOperation.xhtml"/>
 </navigation>
<navigation from-action="#{operationManager.newOp}">
     <redirect view-id="/pages/admin/detailOperation.xhtml"/>
</navigation>

The problem is that in detailOperation.xhtml, I don't know how to distinguish which action is edit or new.

1. Can I add a param like this to make it different?

<navigation from-action="#{gestionOperation.editOp(operation.id)}">
     <redirect view-id="/pages/admin/detailOperation.xhtml">
         <param name="mode" value="edit"/>
     </redirect>
 </navigation>
<navigation from-action="#{operationManager.newOp}">
     <redirect view-id="/pages/admin/detailOperation.xhtml">
        <param name="mode" value="new"/>
     </redirect>
</navigation>

2. And so, in detailOperation.xhtml, how can I get value of param in order to show/hide component correctly?

Thanks,
Tina

[lazo]

I'm using similar approach to switch between edit and view mode on the same xhtml page.

Try adding

<param name="mode" />

in detailOperation.page.xml and then in detailOperation.xhtml get value with

#{mode}

[cbensemann]

Generally if I have one page for edit and add of an entity such as operation i would use EL like #{operation.id == null} to check if this object has been persisted. If the id is null then the object is not yet saved so its an add. if its not null then we are editing an existing entity.

[tienlantri]

In fact we don't need to declare

<param name=... />

inside the redirect in xml. We can get operation.id as Craig suggested. But we compare #{operation.id == 0} means it's a new object because when I redirect to newOp, I instantiate the object.

Thanks for your response!!!
Tina