Grails Validation : renderErrors not picking up after formRemote - grails

Question

This is in the gsp
<g:if test="${hasError}">
<div class="errors">
<g:renderErrors bean="${eventInstance}" />
</div>
</g:if>
<g:else >
<div id="messageBox" class="message" style="display:none;">
<g:message code="legalevent.save.success" args="[entityName]" default="Event saved successfully" />
</div>
</g:else>
<g:formRemote name="eventForm" id="eventForm" url="[controller : 'search', action : 'saveLegalEvent']"
update="eventFormDiv" action="${createLink(controller: 'search', action: 'saveLegalEvent')}" method="POST"
onSuccess="jQuery('#messageBox').show()">
I am rendering a page for update with this :
def saveLegalEvent = {
def paramsView = params
def eventPattern = /(event\.).*/
def event = LegalEvent.findByLevId(params["levId"])
def corrTxt = params["corrTxt"] as CorrectionText
if(corrTxt.getCorrId()){
corrTxt = CorrectionText.findByCorrId(corrTxt.getCorrId())
}
event.setCorrTxt(corrTxt)
event.properties = params["event"]
def dataList = []
def hasError = false
def validated = event.validate()
validated &= event.validateHistoryParams()
if(validated)
event.save(flush:true)
else
hasError = true
def errorsView = event.errors
render(view:'leform', model:[attributeDataInstanceList:event.tags, lecInstance:event.leCode, eventInstance:event, hasError: hasError])
}
validateHistoryParams validate some more params that are usually not needed in the domain class.
def validateHistoryParams = { ->
if(!changeRef || !changeRef.trim()) {
this.errors.rejectValue('changeRef', 'event.changeRef.blank')
}
if(!corrTxt || !(corrTxt.corrTxt.trim() || corrTxt.corrId )) {
this.errors.rejectValue('corrTxt', 'event.corrTxt.null')
}
!(this.hasErrors())
}
The problem with all this is that the errors are not rendered in the gsp.
All other tags are rendered fine, when debugging I can see that the errors are actually in the error stack. But in the end, the tag isn't rendering them.
As you can see, there is no redirection, so I can't understand why the errors would somehow be erased between the response creation and the rendering ...

Answer 1

In your Groovy code, parameter returned is named hasError, and GSP checks for hasErrors. I'd recommend not to use extra variables, and just query the bean itself in GSP.
I also believe that you need to have that errors div inside the formRemote element in order to re-render after form submission.