Grails 2.5 REST PUT not getting called - json

Question

Grails 2.4 RESTful controller.
I have a basic question. I have a RESTful controller with simple domain class and my GET, POST works fine.
How do I send PUT JSON request?
I am using default RESTful generated controllers
url -i -X POST -H "Content-Type: application/json" -d '{"roleId":1,"username":"testuser5"}' http://localhost:8090/testapp/User
HTTP/1.1 201 Created
Server: Apache-Coyote/1.1
Content-Type: application/json;charset=UTF-8
Transfer-Encoding: chunked
Date: Thu, 03 Jul 2014 02:07:13 GMT
{"id":null,"userId":79,"username":"testuser5"}
Then I tried PUT using same above JSON response (removed id:null and changed the username):
curl -i -X PUT -H "Content-Type: application/json" -d '{"userId":79,"username":"testuser6"}' http://localhost:8090/testapp/User
Request goes to index and I get list of users. What I am doing wrong? How do I invoke "update' method? If I add my own method and I do PUT, my own method gets invoked.
Domain class:
class User {
Integer userId
String username
static mapping = {
table 'user'
version false
id name:'userId', column: 'user_id'
}
static constraints = {
username blank:false, nullable:false
}
}
RESTful controller:
class UserController extends RestfulController {
static responseFormats = ['json', 'xml']
static allowedMethods = [save: "POST", update: "PUT", delete: "DELETE"]
def index(Integer max) {
params.max = Math.min(max ?: 10, 100)
respond User.list(params), model:[userInstanceCount: User.count()]
}
def show(User userInstance) {
respond userInstance
}
def create() {
respond new User(params)
}
#Transactional
def update(User userInstance) {
println "*** in update "
if (userInstance == null) {
notFound()
return
}
if (userInstance.hasErrors()) {
respond userInstance.errors, view:'edit'
return
}
userInstance.save flush:true
request.withFormat {
form multipartForm {
flash.message = message(code: 'default.updated.message', args: [message(code: 'User.label', default: 'User'), userInstance.id])
redirect userInstance
}
'*'{ respond userInstance, [status: OK] }
}
}
protected void notFound() {
request.withFormat {
form multipartForm {
flash.message = message(code: 'default.not.found.message', args: [message(code: 'user.label', default: 'User'), params.id])
redirect action: "index", method: "GET"
}
'*'{ render status: NOT_FOUND }
}
}
}

Answer 1

You're missing the call to user.validate() prior to calling hasErrors(). See
https://github.com/grails/grails-core/blob/master/grails-plugin-rest/src/main/groovy/grails/rest/RestfulController.groovy#L99