Component Property Expression + MDS Customization

Question

JDeveloper 11.1.1.6.0
I'm trying to find out the best practice with mixing MDS user customization with rendered property EL expression.
Simple scenario.
Checkbox (CB) - valueChangeListener //code onChange, persist via Java ComponentChange against BT's rendered property.
Button (BT) - rendered = #{pageFlowScope.renderProperty}
Dilemma.
#{pageFlowScope.renderProperty} = false
mds = true
result = component renders //when it should not
Assume that the pageFlowScope property is dependent on N-variables and is an all encompassing parameter which drives the screen's context.
Assuming that I want the rendered property to always override user customization, is there a way for the EL expression property to override customization at time of render? Or maybe this might be the wrong approach and I should be looking at it in a different direction.
I'm looking for a best practice in this mix where user customization is required but at the same time it should follow certain rules or expressions.

Answer 1

Hi,
So assume you have the button saved in MDS as rendered = false, then upon page creation the button will have this value set. If you want to override this setting with a dynamic value (in which case the question arises why you saved the component state in MDS at all) then you need to do so in before render response phase. Unfortunately still here you may be a victim of a race condition as MDS customizations are also applied during render response phase
Frank