Add redirect_uri to access_token params

[gdong42]

This change is to overcome redirect_uri missing issue caused by this commit in omniauth-oauth2: omniauth/omniauth-oauth2@2615267#diff-1894759d724182a93ca97be91b43a7bc

callback_url is added back to build up access_token params for weibo strategy.

[erickguan]

Thanks for investigation. The strategy file is imported (copy & paste) from https://github.com/beenhero/omniauth-weibo-oauth2/blob/master/lib/omniauth/strategies/weibo.rb#L89-L97. The difference lies in these lines. Did you checkout the new version?

[gdong42]

@fantasticfears Yes, I did. It does not work - I think it requires to setup redirect_uri in provider config accourding to https://github.com/beenhero/omniauth-weibo-oauth2/blob/master/README.md#configuration

provider :weibo, ENV['WEIBO_KEY'], ENV['WEIBO_SECRET'],
         token_params: {redirect_uri: "http://127.0.0.1:3000/auth/weibo/callback" }

Not sure if above is set in the plugin.

The issue was also described in this issue: beenhero/omniauth-weibo-oauth2#21
This pull request ( beenhero/omniauth-weibo-oauth2#24 ) proposed a fix, but the solution was not working as well ( as tested locally on my site ). So I have to trace up to omniauth-oauth2 project and find the solution.

Thanks,
Gan

[erickguan]

nitpick, should call super instead of (full_host + script_name + callback_path)

[erickguan]

It also seems omniauth-oauth2 has some problems. Anyway, it's not relevant here. omniauth/omniauth-oauth2#100

[gdong42]

nitpick, should call super instead of (full_host + script_name + callback_path)

not working... just tested with my branch https://github.com/gdong42/discourse-chinese-localization-pack/tree/temp
not sure if I'm using super in the correct way, though - I'm quite new to Ruby
I guess it might be due to the super callback_url was removed in the change that the pull request you posted was trying to add back

[erickguan]

Ok...I don't get their problem. I'm happy to merge this. Thank you!