get the value sent with g:link on GSP

Question

<li><g:link params="[num: patientInstance.id]" controller="Consultation" action="create">creer consultation </g:link></li>

this g:link is in the patient view\show , i use it to send the id of the patient to the consultation controller in order to use it later ,so how can i get the patientInstance.id in consultation controller ?

thanks for your answers.

Answer 1

You use the params map.
http://grails.org/doc/latest/ref/Controllers/params.html

So in your Consultation controller you have your create action as such:

def create() {
    def patient = Patient.get(params.num.toLong())
...//do something else //

}

Then you have it render a view, or send a map back to the gsp with the name create.