This is also a problem in Merb. I believe AR's json and Merb's json
don't play well together. I put this in init.rb and now life is grand.
Merb.disable :json
On Aug 24, 1:04 pm, Mads Kristiansen <[EMAIL PROTECTED]>
wrote:
> Okay, thanks. Just wanted to confirm that it actually worked
> somewhere.. :)
>
> I removed the "json_pure" gem and now it works for me too.. Not sure
> if that will cause other problems, but we'll see about that.
>
> Best regards, Mads Kristiansen
>
> On 24/08/2008, at 19.32, Frederick Cheung wrote:
>
>
>
>
>
> > On 24 Aug 2008, at 13:41, Mads Kristiansen wrote:
>
> >> Hi there,
>
> >> I am fairly new to the Rails framework, so forgive me if there is an
> >> obvious solution to this problem.
>
> >> I am using Rails 2.1.0 and trying to jsonify a hash containing an
> >> array. E.g.
>
> >> result = { :name => "McLovin", :attachments => ['file.pdf',
> >> 'file.jpg'] }
> >> => {:attachments=>["file.pdf", "file.jpg"], :name=>"McLovin"}
> >> result.to_json
>
> >> I would expect something like:
>
> >> {
> >> "name": "McLovin",
> >> "attachments": [
> >> "file.pdf",
> >> "file.jpg"
> >> ]
> >> }
> > Which is exactly what I got when I tried this out. Do you have any
> > plugins/use any gems that could be clashing with activesupport's
> > JSON stuff?
>
> > Fred
>
> >> But instead I get:
>
> >> TypeError: wrong argument type Hash (expected Data)
> >> from /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/
> >> active_support/json/encoding.rb:21:in `to_json'
> >> from /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/
> >> active_support/json/encoding.rb:21:in `send'
> >> from /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/
> >> active_support/json/encoding.rb:21:in `encode'
> >> from /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/
> >> active_support/json/encoding.rb:31:in `raise_on_circular_reference'
> >> from /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/
> >> active_support/json/encoding.rb:20:in `encode'
> >> from /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/
> >> active_support/json/encoders/hash.rb:42:in `to_json'
> >> from /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/
> >> active_support/json/encoders/hash.rb:41:in `map'
> >> from /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/
> >> active_support/json/encoders/hash.rb:41:in `to_json'
> >> from /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/
> >> active_support/core_ext/object/misc.rb:28:in `returning'
> >> from /Library/Ruby/Gems/1.8/gems/activesupport-2.1.0/lib/
> >> active_support/json/encoders/hash.rb:40:in `to_json'
> >> from (irb):54
>
> >> If I do "result.to_json( :except => :attachments )", then it works.
>
> >> Best regards, Mads Kristiansen
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