Posted By

kungfoo on 05/19/09

Tagged

groovy

Versions (?)

Last Edited at 05/19/09 04:20am

Statistics

Viewed 563 times

Favorited by 0 user(s)

Related snippets

registerObjectMarshaller in Grails 1.1, suspected Bug

/ Published in: Groovy

Expected Behaviour
==================

* Both classes should be rendered in the specified custom format when `store/book/list.json` is loaded.
* Order of how the marshallers are added should not matter.
* It should be possible to register more than one custom object marshallers.

Bug
===

* Only the first registered marshaller is picked up as expected.
* The second one is ignored and the default JSON generated by Grails is returned.
* The order of the calls to `registerObjectMarshaller` matters, such that if the Book marshaller is added first, that one works. However if the Author marshaller is first, that one works.

Highlighted TextExpand

/* Book domain class */
class Book {
	int pages
	String title
}

/* Author domain class */
class Author {
	String name
	Date birthDate
}

/* registering custom marshallers in Bootstrap.groovy */
import grails.converters.JSON

class BootStrap {

def init = { servletContext ->
		JSON.registerObjectMarshaller(Author){	author, json ->
			def birthday = author.birthDate
			json.build{
				"class(author)"
				id(author.id)
				name(author.name)
				info{
					birthdate(year: birthday.year, month: birthday.month, day: birthday.day)
				}
			}
		}
		
		JSON.registerObjectMarshaller(Book){	book, json ->
			json.build{
				"class(book)"
				id(book.id)
				info{
					pages(book.pages)
				}
			}
		}
	}
}

/* code for output in controller */
def list = {
	params.max = Math.min( params.max ? params.max.toInteger() : 10,  100)
	def authors = Author.list( params )
	withFormat{
		json{
			render authors as JSON
		}
		html{
			[ authorInstanceList: authors, authorInstanceTotal: Author.count() ]
		}
	}
}

Report this snippet Tweet

Comments

Subscribe to comments

Comment:

You need to login to post a comment.