Rails, how do you access the raw request data at the absolute lowest level?

Question

When is the Rails request object available at the earliest time during the request lifecycle? Essentially, when is the request first available as a request object, and in which object? ActionDispatch?

Can you access request parameters from Tester::Application? If so, how? If not, what about using the environment? When is that information set?

You need to clean up and clarify your question a bit. Are you asking how to get access to all request params during a controller action? If so, that's as easy as writing `puts request` in a controller action and looking at the rails console. — iwasrobbed, Dec 08 '11 at 03:26
This was a bit vague, but essentially, when is the request first available as a request object, in which object? ActionDispatch? etc — scottkf, Dec 08 '11 at 12:43

score 11 · Accepted Answer · answered Dec 08 '11 at 16:13

11

The Rack webserver creates the request object and then ActionDispatch inherits from it. So essentially, you'd be able to access the Rack::Request or ActionDispatch::Request objects within the middleware of the app.

Rack::Request

https://github.com/rack/rack/blob/master/lib/rack/request.rb

ActionDispatch::Request

https://github.com/rails/rails/blob/master/actionpack/lib/action_dispatch/http/request.rb

answered Dec 08 '11 at 16:13

iwasrobbed

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Thanks! That was what I was looking for – scottkf Dec 12 '11 at 14:27

score 3 · Answer 2 · answered May 06 '14 at 13:35

3

A middleware is probably the best way to access this data. I made a simple gem for setting up a raw HTTP request/response log in Rails using the classes mentioned in the accepted answer.

https://github.com/andrhamm/marcopolo

answered May 06 '14 at 13:35

andrhamm

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Thanks for making this. It's exactly what I needed to scrape out tokens from an api service so that I could hit it with curl. – Jacob Dalton Aug 26 '14 at 19:36
@JacobDalton no problem, please let me know how it works out for you or open an issue on the github page for ideas for enhancements – andrhamm Aug 27 '14 at 00:43

Rails, how do you access the raw request data at the absolute lowest level?

2 Answers2

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