NoMethodError: undefined method `[]' for #<JSON::Ext::Generator::State:0x2407ea8>

rubyonrails-talk
1

Trying to move a project to Rails 2.3.3, and getting the following:

NoMethodError: undefined method `' for #<JSON::Ext::Generator::State: 0x2407ea8>   from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.3/lib/ active_support/json/encoders/hash.rb:45:in `as_json'   from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.3/lib/ active_support/json/encoders/hash.rb:34:in `to_json'

I understand that the to_json/as_json stuff changed, but this is for something simple (using just hashes) like:

  JSON.generate({"foo"=>"bar"})

I'm using latest json gem, tried requiring active_support before json, and put this into my environment as suggested by the Rails upgrade notes:

  ActiveSupport::JSON.backend = 'JSONGem'

No dice. If I use Rails 2.3.2, it's happy.

Anyone encounter/conquer this?

Tx, Rafi

2

After sleeping on it for a night, I replaced all instance of 'JSON.generate(hash)' with hash.to_json, solving the problem.

Posting this for posterity and those googling the issue.

3

Ya, they changed how parse/generate works I think it accepts/returns arrays now. Changing the behavior of a gem like that is wrong. Can we get this changed back please?

Chris