Grails WebFlow状态名称 [英] Grails WebFlow State Name

问题描述

Grails noob here ...

如何在Grails webflow状态中获取状态名称？我正在使用Grails WebFlow和jQueryMobile构建移动应用程序原型。因为它是一个主要由列表组成的移动应用程序，所以我使用这样的堆栈管理后台事件：

  class myController {
 def myFlow {
 start {
 action {
 flow.states = [] 
 [...] 
} 
 on（success ）tostate0
} 
 
 state0 {
 on（back）。tohome
 on（event）{
 flow.states<< state0
} .tostate1
} 
 
 state1 {
 on（back）。to {flow.states.pop（）} 
 on（event）{
 flow.states<< state1
} .tostate2
} 
 
 state2 {
 on（back）。to {flow.states.pop（）} 
 
 $ b $ home 
 redirect（...）
} 
} 
} 
  

这可行，但我想用行替换硬编码的状态名称字符串，如 flow.states<< 状态＃如果有办法做到这一点，就用一个表达式。

编辑：我会接受解释为什么可以'

解决方案

尝试使用RequestContext和/或FlowExecutionContext？例如flowExecutionContext.currentState.id

Grails noob here...

How do I get the state name inside a Grails webflow state? I'm prototyping a mobile app using Grails WebFlow and jQueryMobile. Because it's a mobile app comprised primarily of lists, I manage the back events using a stack like this:

class myController {
    def myFlow {
        start {
            action {
                flow.states = []
                [ ... ]
            } 
            on("success").to "state0"
        }

        state0 {
            on("back").to "home"
            on("event") {
                flow.states << "state0"
            }.to "state1"
        }

        state1 {
            on("back").to { flow.states.pop() }
            on("event") {
                flow.states << "state1"
            }.to "state2"
        }

        state2 {
            on("back").to { flow.states.pop() }
        }

        home {
            redirect( ... )
        }
    }
}

This works, but I'd like to replace the hard coded state name strings in lines like flow.states << "state#" with an expression if there's a way to do it.

EDIT: I'll accept answers that explain why this can't be done.

解决方案

Try using the RequestContext and/or the FlowExecutionContext? e.g. flowExecutionContext.currentState.id

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