Invalidating or discarding history is not working after state validation in Spring Web Flow 2

Question

I've configured the backtracking in my flow in the following way:

<view-state id="step1" model="step1Model" >
 <transition on="next" to="step2" history="invalidate">
 </transition>
</view-state>

<view-state id="step2" model="step2Model" >
 <transition on="next" to="xxxx" history="invalidate">
 </transition>
</view-state>

Also, I'm using the programatic validation implementing a model validate method in the same way you can read in the documentation (link).

The backtracking configuration is working properly when the model validation doesn't have any errors, in this case if you press the browser back button the flow is reloaded how it's expected.

The problem is when the model has some errors the validation doesn't let you go to the next step, in this case if you press the browser back button you can see a browser error page "Document Expired. This document is no longer available".

Any idea about this?

Thanks, Gerardo.

score 1 · Answer 1 · answered Jan 16 '13 at 11:55

1

Problem is that you invalidate history on each step. It would be better if you use end-state to clean history.

<view-state id="step1" model="step1Model" >
 <transition on="next" to="step2">
 </transition>
</view-state>

<view-state id="step2" model="step2Model" >
 <transition on="next" to="end">
 </transition>
</view-state>

<end-state id="end" />

answered Jan 16 '13 at 11:55

user926780

74
2

Thank you but that's not the problem. The problem is from the step1 to step2 when the model have some error. – Gerardo Jan 16 '13 at 13:37
Yes, because you invalidate history the moment you fire event next. – user926780 Jan 16 '13 at 21:18

Invalidating or discarding history is not working after state validation in Spring Web Flow 2

1 Answers1