Grails parse JSON into domain class

Question

Hi Say that I have a domain class

class Book{
static hasOne=[author:Author]
long id
String name

}

class Author {
static hasMany=[books:Book]
long id
String name
}

I have a json object sent in. Can I jus do a new Book(Json) and not manually set the property?

Solution

Using the built-in Grails JSON converter makes this easier

import grails.converters.JSON

class BookController {
   def save = {
      def book = new Book(JSON.parse(yourJson))
      book.save(flush:true)
   }
}

In the code what's happening (we're parsing a JSON object and setting the properties on the Book entity and saving