OAuth2::Error Google +

Question

My code in omniauth.rb I'm using Rails with OAuth so users can sign in with Google +

I've registered my app on the dev site, got my credentials, and listed my origin and callback as: http://localhost:3000 and that with /auth/google/callback on the end respectively.

However, when I navigate to Google + to authenticate, I click 'allow' and I'm navigated back to my app, I receive this Rails error message:

OAuth2::Error redirect_uri_mismatch: { "error" : "redirect_uri_mismatch" }

I don't understand how to fix this. What do I do?

Answer 1

You can not set localhost directly as your callback. You can use 127.0.0.1:3000/auth/google/callback instead as your callback url and it should work.