Authenticating with different api keys for each request

[Joe Van Dyk]

We are hosting different domains in the same Rails application
instance. We have http://www.domain1.com, http://www.domain2.com,
etc. Each domain would authenticate against a different facebook or
twitter application.

The default omniauth pattern is to specify the api keys once in the
application:

config.middleware.use OmniAuth::Builder do
provider :facebook, 'blah', 'something'
end

We would need the keys to change on each incoming request, as each
request could service a different site/domain.

How would you do this? I was thinking that we'd need a Rack
middleware that loads before the omniauth ones. That Rack middleware
would load the correct authentication keys and send that the to the
omniauth middlewares.

Is that possible? Has anyone done something like this before?

Thanks,
Joe

[Mike Petersen]

Hi Joe,

did you find a good solution?

Regards

Mike

[Joe Van Dyk]

This was a long time ago, but I think you could pass a block into the configuration method. The block receives the rack request object, so you can inspect that and have the block return the correct config data. 

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