http://groups.google.com/group/rubyonrails-talk/browse_thread/thread/37c42ddec5d45b2

>> ActiveSupport::JSON.decode(ActiveSupport::JSON.encode(“”))
=> “\\u003C\\u003E”

Not idempotent. Oh my!

// Gregory

@sub_category.to_json(
  :include => [
    :category,
    :subscriptions => {
      :include => :subscriber
    }
  ]
)

More examples at http://api.rubyonrails.org/classes/ActiveRecord/Serialization.html#M001111

Good point though, I didn’t write a test for this and it is rather tricky syntax.

@sub_category.to_json(:include => [
  :category,
  :subscriptions => {
    :include => :subscriber
  }
])

I tried to find you on #rubyonrails to ask you this.

Shouldn’t this work:

@sub_category.to_json(:include => [:category, {:subscriptions => { :include => :subscriber }}])

This simply including 2 attributes of sub_category: category and subscriptions. And then includes the subscriber for all subscriptions.

This fails: NoMethodError – The error occurred while evaluating nil.macro):

If I remove the category so it’s like this:

@sub_category.to_json(:include => [{:subscriptions => { :include => :subscriber }}])

The serialization works like a champ. If I add category back and remove the subscribers, it works also:

@sub_category.to_json(:include => [:category, :subscriptions ])

There seems to be something wrong with the combination of an include with an an array item including a higher order association.

What do you say? Is my syntax off?

from the example given, it’s clear you can do single associations and nested single associations, but can you do multiple associations as well?

thanks for any suggestions…

-hubert

But, very nice stuff you’ve got there, ever thought about rolling it into a plugin for Rails 1.x?

The nice thing is that I am able to convert to_json but also from_json, recovering or creating the activerecord counterpart as needed.

I am too newbie on rails to understand if it can be of any use for anyone, but I accept every kind of comment !