I'm confused about the difference and relationship between
the RAILS_ENV constant, and ENV['RAILS_ENV']. What is the
intent in usage between the two?
My initial thought was that ENV['RAILS_ENV'] was sort of the
outside world's way of communicating with the rails app, but
maybe that rails would set RAILS_ENV from that early and then
just go from there.
But I find plugins and bits of code here and there that use
ENV['RAILS_ENV'] in decision logic directly, in addition to code
that uses RAILS_ENV in decision logic.
Is there a "more correct" way? And when exactly does RAILS_ENV
get set?
Lastly, in a shell with no RAILS_ENV set, I do:
% echo $RAILS_ENV
RAILS_ENV: Undefined variable.
% script/console production
>> RAILS_ENV
=> "production"
>> ENV['RAILS_ENV']
=> "development"
Huh? Where is that "development" coming from?
Pointers to decent documentation on this stuff very much welcomed!
Thanks...
-glenn
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