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registerObjectMarshaller in Grails 1.1, suspected Bug

/ Published in: Groovy
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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.

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  1. /* Book domain class */
  2. class Book {
  3. 	int pages
  4. 	String title
  5. }
  6.  
  7. /* Author domain class */
  8. class Author {
  9. 	String name
  10. 	Date birthDate
  11. }
  12.  
  13. /* registering custom marshallers in Bootstrap.groovy */
  14. import grails.converters.JSON
  15.  
  16. class BootStrap {
  17.  
  18. 	def init = { servletContext ->
  19. 		JSON.registerObjectMarshaller(Author){	author, json ->
  20. 			def birthday = author.birthDate
  21. 			json.build{
  22. 				"class(author)"
  23. 				id(author.id)
  24. 				name(author.name)
  25. 				info{
  26. 					birthdate(year: birthday.year, month: birthday.month, day: birthday.day)
  27. 				}
  28. 			}
  29. 		}
  30.  
  31. 		JSON.registerObjectMarshaller(Book){	book, json ->
  32. 			json.build{
  33. 				"class(book)"
  34. 				id(book.id)
  35. 				info{
  36. 					pages(book.pages)
  37. 				}
  38. 			}
  39. 		}
  40. 	}
  41. }
  42.  
  43. /* code for output in controller */
  44. def list = {
  45. 	params.max = Math.min( params.max ? params.max.toInteger() : 10,  100)
  46. 	def authors = Author.list( params )
  47. 	withFormat{
  48. 		json{
  49. 			render authors as JSON
  50. 		}
  51. 		html{
  52. 			[ authorInstanceList: authors, authorInstanceTotal: Author.count() ]
  53. 		}
  54. 	}
  55. }

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