I've been writing a game for Facebook using Rails and jQuery. Since I started using the Facebook Javascript SDK, using localhost as an app domain seemed to work just fine. I was able to test my game both locally and on Heroku.
In the past day, it seems that Facebook has made a big update to their developer UI. Now if I add localhost as an app domain, it gives me the following error:
This must be derived from Canvas URL, Secure Canvas URL, Site URL, Mobile Site URL, Page Tab URL or Secure Page Tab URL. Check and correct the following domains: localhost
My game also now doesn't work locally and I get an error when the Javascript SDK logs in the user:
API Error Code: 191 API Error Description: The specified URL is not owned by the application Error Message: Invalid redirect_uri: Given URL is not allowed by the Application configuration.
This doesn't happen when I deploy my game, since herokuapp.com is considered a valid app domain.
How am I supposed to develop and test my game if I can no longer use localhost or 127.0.0.1?