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Editorial Team
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Asked: 2026-06-04T02:37:13+00:00

I’m adding Google Oauth2 to a Rails app, but have been unable to get

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I’m adding Google Oauth2 to a Rails app, but have been unable to get past the early stages.

I’ve set up an app, and defined client ID and secret.But I’m getting Invalid parameter value for redirect_uri: Non-public domains not allowed: http://localhost/path/to/callback

What does this mean? Is this because I’m testing on a local dev environment?

Thanks for any ideas.

EDIT

This might be because the app’s URI differs from the sending URI. But when I go to Google and try to authorize the path to my dev app, I get OAuth2 redirect is invalid. Is this a limitation of using a locally hosted app?

EDIT 2

The request I’m generating looks like this:

https://accounts.google.com/o/oauth2/auth?response_type=code&client_id=###########&redirect_uri=http%3A%2F%2Fmyapp.dev%2Fusers%2Fauth%2Fgoogle_oauth2%2Fcallback&scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.profile&approval_prompt=&access_type=offline

Is this correct. I’ve tried this with client_id including and excluding the .apps.googleusercontent.com section. Neither seems to work.

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1 Answer

  1. Editorial Team

    For anyone else finding this, my problem was combination of several things.

    1. I could not get callbacks to work on a local machine. The console API console suggests it is possible, but I couldn’t get it working. Not sure of this is down to the service, or to my network/ connection/ firewall/ etc.

    2. In the API console you must specify the full redirect URI, not just the root url back to your app.

    3. Google lists scope parameters here https://developers.google.com/gdata/faq#AuthScopes. It seems this information is outdated, and the correct format for these is now https://www.googleapis.com/auth/plus.me, https://www.googleapis.com/auth/youtube, etc. Maybe someone else can confirm this?

    I had a few other things going on as well. I had written a full explanation on another of my questions here on SO. Unfortunately my comments were deleted instead of moved by a moderator because I posted in the wrong place. I can’t now remember all that I wrote. For others facing similar issue, feel free to comment, it may jog my memory so I can offer some ideas.

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