grails webflow error - grails

Question

i have this grails webflow
def currencyDescriptionFlow = {
start {
action {
flow.messageCommand = new MessageCommand()
flow.currencyId = params.id
flow.languageList = Language.findAll([sort: 'codeDescription', order: 'asc'])
}
on('success').to('description')
}
description{
action{
flow.DescriptionMessageList = Message.findAllByKey(flow.currencyId + '_Currency')
}
on('add').to('addSubmit')
on('finish').to('currencyShow')
}
addSubmit{
action {
MessageCommand cmd ->
flow.messageCommand = cmd
if (!flow.messageCommand.validate()){
error()
}
}
on('error').to('description')
on('success').to('description')
}
saveMessage{
action{
def str = flow.currencyId + '_Currency'
messageSevice.descriptionMultiLanguage(str, params.description, params.Language)
}
on('error').to('description')
on('success').to('description')
}
currencyShow{
redirect(controller:'currency', action: "show", id: flow.currencyId)
}
}
when i click the link to redirect to this page, ann error occurs
Error 500: No transition was matched on the event(s) signaled by the [1] action(s)
that executed in this action state 'description' of flow 'message/currencyDescription';
transitions must be defined to handle action result outcomes -- possible flow
configuration error? Note: the eventIds signaled were: 'array<String>
['success']', while the supported set of transitional criteria for this action
state is 'array<TransitionCriteria>[add, finish]'
Servlet: grails
URI: /adm-appserver-manager/grails/message/currencyDescription.dispatch
Exception Message: No transition was matched on the event(s) signaled by the [1]
action(s) that executed in this action state 'description' of flow 'message/currencyDescription';
transitions must be defined to handle action result outcomes -- possible flow
configuration error? Note: the eventIds signaled were: 'array<String>
['success']', while the supported set of transitional criteria for this action state
is 'array<TransitionCriteria>[add, finish]'
Caused by: No transition was matched on the event(s) signaled by the [1] action(s)
that executed in this action state 'description' of flow 'message/currencyDescription';
transitions must be defined to handle action result outcomes -- possible flow
configuration error? Note: the eventIds signaled were: 'array<String>['success']',
while the supported set of transitional criteria for this action state is
'array<TransitionCriteria>[add, finish]'
Class: Unknown
At Line: [-1]
Code Snippet:
Note:
where language is a table in the database
MessageCommand is command object
messageService is a service
descriptionMultiLanguage method in message service for saving message
i try this way of writing code in another action and controoler and it works without any error.
by debugging this code i found the error on (
on('add').to('addSubmit')
on('finish').to('currencyShow')
)
when i remove these 2 lines , no problem found

Answer 1

def currencyDescriptionFlow = {
start {
action {
flow.messageCommand = new MessageCommand()
flow.currencyId = params.id
flow.languageList = Language.findAll([sort: 'codeDescription', order: 'asc'])
flow.DescriptionMessageList = Message.findAllByKey(flow.currencyId + '_Currency')
}
on('success').to('description')
}
description{
on('add').to('addSubmit')
on('finish').to('currencyShow')
}
addSubmit{
action {
MessageCommand cmd ->
flow.messageCommand = cmd
if (!flow.messageCommand.validate()){
error()
}
flow.message = null
}
on('error').to('description')
on('success').to('saveMessage')
}
saveMessage{
action{
Message messageInstance = new Message(language:flow.messageCommand.language,value:flow.messageCommand.value,key:flow.currencyId + '_Currency')
if (!messageInstance.save(flush:true)){
flow.message = "${message(code: 'error.adding.description')}"
error()
}
flow.DescriptionMessageList = Message.findAllByKey(flow.currencyId + '_Currency')
}
on('error').to('description')
on('success').to('description')
}
currencyShow{
redirect(controller:'currency', action: "show", id: flow.currencyId)
}
}