Weird issue {"json_class"=>"Symbol", "s"=>"identify"} is not a symbol

[tommyalvarez]

I'm receiving that error constantly while tracking events in controllers that are called with ajax, and are sent to mixpanel with sidekiq, and even when doing sign out. It appears that the error is located at: /mengpaneel/replayer.rb:36:in `public_send'
as well as server_side.rb:33.

What could be the problem?

[DouweM]

What Ruby version are you using? What Rails version? What JSON version (JSON::VERSION)?

What are you getting for :test.method(:as_json).source_location?

[tommyalvarez]

Ruby 2.1.6 on rails 4.1.5!

On Friday, October 2, 2015, Douwe Maan notifications@github.com wrote:

What Ruby version are you using? What Rails version?

—
Reply to this email directly or view it on GitHub
#10 (comment).

[DouweM]

@tommyalvarez hmm, all right. How about the two questions I edited in later? ;)

[tommyalvarez]

@DouweM JSON::VERSION
=> "1.8.3"
:test.method(:as_json).source_location
=> ["/home/tommy/.rvm/gems/ruby-2.1.6@chefandme/gems/json-1.8.3/lib/json/add/symbol.rb", 9]

[tommyalvarez]

@DouweM updates?

[DouweM]

@tommyalvarez Sorry—missed your second comment so didn't investigate further.

I'm seeing this for the source_location:

["/Users/douwemaan/.rvm/gems/ruby-2.1.6/gems/activesupport-4.1.12/lib/active_support/core_ext/object/json.rb", 86]

Looks like the regular JSON and ActiveSupport Symbol#as_json implementations are different. For :test.as_json, you get {"json_class"=>"Symbol", "s"=>"test"} using the former, I get "test" using the latter. The latter being what mengpaneel expects.

Do you do anything interesting around (not) loading ActiveSupport? :/