NoMethodError (undefined method `key?' for #<JSON::Ext::Generator::State:0x007........

[twiduch]

I am getting that error when trying with sidekiq_mailer 0.0.6

[scottkf]

@twiduch This is a probably when using this with devise, because devise passes in the User or whichever model and not a user's attributes, don't know the fix yet

[chadwtaylor]

+1 I'm getting the same error. This happened after upgrading from Rails 3.2 to 4.0.

[keo64]

I pass to action mailer object id and there load object. It work!!! (not need to pass live object to mailer, only id)

[andersondias]

In order to use sidekiq_mailer you need to pass simple objects as parameters to actions. Instead of receiving complex Objects, such as User, you should pass user id, or any integer, string, boolean objects.

[scottkf]

In my case it was devise causing the problem, and a quick fix can be the following - you could also change devise as well

Sidekiq::Mailer.excluded_environments = [:test, :cucumber]


# monkey patch so sidekiq mailer doesn't handle devises backgrounding
#  which would try to serialize the user object
class Sidekiq::Mailer::Proxy

  def deliver
    return deliver! if Sidekiq::Mailer.excludes_current_environment? || @mailer_class.to_s == "Devise::Mailer"
    Sidekiq::Mailer::Worker.client_push(to_sidekiq)
  end

end