ruby on rails - Uninitialized constant error in controller when deploy to heroku -

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i try set devise , omniauth follow https://github.com/plataformatec/devise/wiki/omniauth:-overview , deploy heroku. there no error in localhost , when push heroku , app crash. in heroku logs , found 'uninitialized constant users' error in omniauth_callbacks_controller.rb . how initialize users? have heroku rake db:migrate already. cant run heroku console because app crash , cant check there user model. information , generate controller rails g omniauth_callbacks_controller

in heroku logs

/disk1/home/slugs/338566_ad6243a_bbb1-19eae435-d901-44ba-9dd5-baf36d656448/mnt/app/controllers/omniauth_callbacks_controller.rb:1: uninitialized constant users (nameerror)

in omniauth_callbacks_controller.rb

class users::omniauthcallbackscontroller < devise::omniauthcallbackscontroller   def facebook     @user = user.find_for_facebook_oauth(env["omniauth.auth"], current_user)      if @user.persisted?       flash[:notice] = i18n.t "devise.omniauth_callbacks.success", :kind => "facebook"       sign_in_and_redirect @user, :event => :authentication     else       session["devise.facebook_data"] = env["omniauth.auth"]       redirect_to new_user_registration_url     end   end end

are sure user model has been created in heroku's database?

in terminal (not rails console!) enter

heroku rake db:migrate

that migrate heroku's db's match code. still have error?


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