Question

I’m getting the following error in my Rails application and I have no idea how to go about debugging or fixing it:

NoMethodError in
AuthenticationsController#create

You have a nil object when you didn’t
expect it! You might have expected an
instance of ActiveRecord::Base. The
error occurred while evaluating nil.[]

Rails.root:
/Users/phil/Sites/travlrapp.com
Application Trace | Framework Trace |
Full Trace

app/controllers/authentications_controller.rb:15:in
`create’

The controller is this:

class AuthenticationsController < ApplicationController
  def index
    @authentications = current_user.authentications if current_user
  end

    def create

        omniauth = request.env["omniauth.auth"]

        unless omniauth
            redirect_to authentications_url
            flash[:notice] = "Could not authenticate via #{params['provider']}."
        end

        authentication = Authentication.find_by_provider_and_uid(omniauth['provider'], omniauth['uid'])
        if authentication
            flash[:notice] = "Signed in successfully."
            sign_in_and_redirect(:user, authentication.user)
        elsif current_user

            current_user.authentications.create!(:provider => omniauth['provider'], :uid => omniauth['uid'], :token => omniauth['credentials']['token'], :secret => omniauth['credentials']['secret'])
            flash[:notice] = "Authentication successful."
            redirect_to authentications_url
        else
            user = User.new
            user.apply_omniauth(omniauth)
            if user.save
                flash[:notice] = "Signed in successfully."
                sign_in_and_redirect(:user, user)
            else
                session[:omniauth] = omniauth.except('extra')
                redirect_to new_user_registration_url
            end
        end
    end


  def destroy
    @authentication = current_user.authentications.find(params[:id])
    @authentication.destroy
    flash[:notice] = "Successfully destroyed authentication."
    redirect_to authentications_url
  end
end

OmniAuth used to work fine, then I mashed it up trying to swap to a fork by pchilton which supported flickr. I did this by setting :git => in the gemfile and trying to reinstall but im not confident I ever did it right.

I have now manually removed all omniauth and oa- foo gem files and installed first the current stable (0.1.6) and the git master copy but all errors are the same.

Really at a loss here, nobody I know has any idea what the problem is.

Answer 1

This seemed to randomly fix itself. Go Rails!