If & Else statement in webflow inside of a view-state

spring, spring-webflow

Solution

Use Decision-States

Use the decision-state element as an alternative to the action-state to make a routing decision using a convenient if/else syntax. The example below shows the moreAnswersNeeded state above now implemented as a decision state instead of an action-state

Your `editbestellung`-state will look like this (notice that i changed the `to`):

<view-state id="editbestellung" view="eap/orderedit.xhtml"
    model="flowScope.entity">
    <transition on="save" to="eaporderdecision" bind="true">
        <evaluate
            expression="eapBestellungDelegate.save(flowScope.entity,currentUser.name)" />
    </transition>
</view-state>

Then you add the decision-state:

<decision-state id="eaporderdecision">
    <if test="flowScope.isToDo" then="eapordertodolist" else="eaporderlist" />
</decision-state>

Problem

I've the following `view-state`: ``` <view-state id="editbestellung" view="eap/orderedit.xhtml" model="flowScope.entity"> <transition on="save" to="eaporderlist" bind="true"> <evaluate expression="eapBestellungDelegate.save(flowScope.entity,currentUser.name)" /> </transition> </view-state> ``` No elsewhere I set a `flowScope.isToDo` on true. Now I need to check if this flowScope is true. If it is, the `transition` should redirect `to="eapordertodolist"` and if it is false, it should go `to="eaporderlist"`. But I only know how to set the if-statement like that: ``` <if test="testingMethod()" then="view-state when true" else="view-state when false" /> ``` So how can I implement the if-statement inside of the view-state above and do the needed actions?

Original source