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Heroku, Devise: Getting 'NoMethodError (undefined method `to_key' for :user:Symbol)'

I don't know when it happened but I'm getting this error NoMethodError (undefined method 'to_key' for :user:Symbol)

This behavior only happens on Heroku Cedar stack. I use Devise (1.4.2) for authentication via Facebook on Rails 3.1.0.rc6 and ruby 1.9.2-p290. It happens on the line with sign_in_an开发者_运维问答d_redirect(:user, authentication.user). Here's my method:

def create
  omniauth = request.env['omniauth.auth']    

  authentication = Authentication.find_by_provider_and_uid(omniauth['provider'], omniauth['uid'])


  if !authentication.nil?
    flash[:notice] = I18n.t('devise.omniauth_callbacks.success', kind: omniauth['provider'])

    sign_in_and_redirect(:user, authentication.user)
  elsif current_user
    current_user.authentications.create!(provider: omniauth['provider'], uid: omniauth['uid'])
    redirect_to profile_path, notice: I18n.t('devise.omniauth_callbacks.success', kind: omniauth['provider'])
  else
    user = User.new
    user.apply_omniauth(omniauth)
    if user.save
      flash[:notice] = I18n.t('devise.omniauth_callbacks.success', kind: omniauth['provider'])
      sign_in_and_redirect(:user, user)
    else
      session[:omniauth] = omniauth.except('extra')
      redirect_to new_user_registration_url
    end
  end
end


Before doing anything on local computer, try restarting heroku first:

$ cd your_app_directory
$ heroku restart

I had exactly the same problem and a simple restart fixed it.


I'm receiving the same exact error; however, it only started after I configured my hostname in the omniauth.rb initializer as so:

OmniAuth.config.full_host = ‘http://hostname.com/subdirectory’

I've added this because I'm running Rails3 w/ Passenger in a subdirectory off my root domain. Perhaps you have the same override in place?

I still need to remedy Facebook's inability to handle a subdirectory callback (twitter properly preserves the subdirectory without the full_host override). Thoughts?

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