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grailsgsp

Flash message display grails

Can I do something like this inside controller action

def update(){

    if(certain validation fails )
    //flash message to be visible 
    [domainInstance:originalDomainInstance,flash.message : "message(code:'default.some.code.label', default:'Please provide your validation err msg.' )"]
}

The above throws syntax error. I am still trying to fix the syntax. Is it alrite to send the flash message in this way ?

Solution

  • Grails controller returns model which is in simple case just map (map with domainInstance in your case). flash is property which is available in controllers. 

    def update(){

    if(certain validation fails ) {
        flash.message = message(code: 'default.some.code.label', default: 'Please provide your validation err msg.')
    }

    [domainInstance: originalDomainInstance]
}

    If you would to pass message in model map the syntax should look like below:

    [domainInstance: originalDomainInstance, myMessage: message(code: 'default.some.code.label', default: 'Please provide your validation err msg.')]

    Useful links: flash and models and views in Grails.