How can I handle the error:
OmniAuth::Strategies::OAuth2::CallbackError
...generated by OmniAuth when a user goes through to the Facebook login, but decides to cancel?
I have seen a few threads about this, but none of the solutions worked for me.
I tried placing this:
OmniAuth.config.on_failure = UsersController.action(:oauth_failure)
...into the omniauth.rb initializer file with no success.
I am using the omniauth-facebook gem with Rails 4.0.2.
Any help greatly appreciated.
Many thanks! Michael.
My gemfile.lock file reveals the following gems related to the omniauth-facebook gem:
oauth2 (0.8.1)
faraday (~> 0.8)
httpauth (~> 0.1)
jwt (~> 0.1.4)
multi_json (~> 1.0)
rack (~> 1.2)
omniauth (1.1.4)
hashie (>= 1.2, < 3)
rack
omniauth-facebook (1.5.1)
omniauth-oauth2 (~> 1.1.0)
omniauth-oauth2 (1.1.1)
oauth2 (~> 0.8.0)
omniauth (~> 1.0)
I upgraded the omniauth-facebook gem to version 1.0.6 and now it is working as expected.
For anyone else coming across this issue and would like to capture this error, here's what you need:
/config/initializers/omniauth.rb
Rails.application.config.middleware.use OmniAuth::Builder do
provider :facebook, 'xxx', 'xxx', scope: "email,publish_stream,user_location,user_birthday"
end
/config/initializers/omniauth_failure_callback.rb
OmniAuth.config.on_failure = Proc.new do |env|
UsersController.action(:omniauth_failure).call(env)
end
/app/controllers/users_controller.rb
def omniauth_failure
flash[:danger] = "Unable to connect with Facebook at this time."
redirect_to root_url
end
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