Problem when using multiple scopes in facebook

[Pitchlab]

Hi,

I am using grant express and trying to make the facebook example work. The twitter and e.g. moves examples work fine. With facebook there is a problem though. After testing it occurs only when there are multiple scopes defined in the config.

{
  "server": {
    "protocol": "http",
    "host": "localhost:3000"
  },
  "facebook": {
    "key": "(key)",
    "secret": "(secret)",
    "callback": "/handle_facebook_callback",
    "scope": [
      "public_profile",      
      "user_groups",
      "user_likes"
    ]
  }
}

When running, facebook fails to properly redirect back and the query string in the debug shows the scope parameters as url encoded comma separated list:

...&scope=public_profile%2Cuser_groups%2Cuser_likes

With a facebook error message. "Sorry, something went wrong."

When I replace (manually) in the query string with

...&scope=public_profile&scope=user_groups&scope=user_likes

it works fine. Regular commas also don't work manually in the querystring.

What am I doing wrong? I am inclined to think I am missing something totally obvious...

Thanks!

[simov]

Seems to be working here. What exactly is the error message returned from Facebook?

[Pitchlab]

Hi

The site you gave gives me the same error, so I tried a different browser
for good measure. Safari does work. (My) latest version chrome doesn't
(Mac, Yosemite) Weird.

Update: turning off all extensions made it work on chrome as well. Must be
some interference there. As I suspected, something stupid from my side...
Thanks for looking into this.

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*Erik van der Pluijm / *Creative Director & Founder / Thirty X
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On Tue, Jun 7, 2016 at 11:07 PM, simo notifications@github.com wrote:

Seems to be working here https://grant-oauth.herokuapp.com. What
exactly is the error message returned from Facebook?

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[simov]

No problem.