问题
I'm using Sorcery for Authentication, and I need to setup third party authentication in its initializer.
The initializer has a line that looks like this:
config.twitter.callback_url "http://example.dev/auth/callback?provider=twitter"
...where example.dev is the hostname when I'm using Pow in local development. This needs to be example.com if the app is in production, or staging.example.com if it's in staging, etc.
I would like to set this line to be something like this:
config.twitter.callback_url "#{Rails.hostname}/auth/callback?provider=twitter"
... but request.host is the only method I know of that knows that and it's only available at the controller level.
I can use a conditional test and manually setup a hostname for each environment, but as I test on different local and staging environments it would be great to just be able to set this programatically.
Any suggestions?
回答1:
Use:
`hostname`
That uses the Unix "hostname" utility, and it returns a string.
回答2:
You can get the hostname via Socket.gethostname which is part of the Ruby Standard Library.
来源：https://stackoverflow.com/questions/9764352/rails-get-hostname-in-an-initializer