Customize the "env" data with Rails env data

[mnoack]

Hi, I'm looking at using rest-client-components so we can filter out params which are sensitive (e.g. password). This is not to be confused with the "username:password@host" type thing which rest-client already does.

We figured the most logical approach is to hook into Rails's param filter (http://api.rubyonrails.org/classes/ActionDispatch/Http/ParameterFilter.html)

Given logging is middleware and this gem is recommended by rest-client for middleware I was looking at how to implement it.

It seems to be fairly logical BUT ParameterFilter relies on an @env variable called 'action_dispatch.parameter_filter' being setup. This exists globally in Rails.application.env_config

Having a look at how this gem sets up env:
https://github.com/crohr/rest-client-components/blob/master/lib/restclient/components.rb#L102

There's no real room to get your apps existing env and make that the default or override this default, etc.

Do you have any opinion on the ability for me to "merge" this env into your default env or how I would best go about this?