problems with AJAX and update model !

[luisfelipe]

Hello Everybody !

I am having problems with Ajax in the following situation:

I want to update some fields in my page with a <a4j:support> in a <h:selectOneMenu>, my entity is being updated in the event AJAX and It's persisted.
For my application should not happen, because if user to cancel the operation, the entity should be with its previous state.
Someone has any solution to this problem?

I am using Jboss Seam 2.0 with Rich Faces 3.1.2.GA


Thanks!

[alessandrolt]

I have too this problem

I see on others questions the use of bypassUpdates = "true" and flushMode = "manual" in Hibernate/JPA, but this have problems too:

Use bypassUpdates = true isn't appropriate, because the fields that are in the reRender don't show updated (And this is important when using AJAX).

Using flushMode = manual also does not solve the problem.
The model is not persisted in dataBase, but if you click a button like "Cancel" (with immediate = true), the object is still to the state in memory modified by Ajax. If another page to display the object, it will be with wrong values.

Somebody has some tips?

[alessandrolt]

The solution:
http://www.seamframework.org/Community/ProblemsWithAJAXAndUpdateModel#comment