问题
Every time I push a new version to my staging heroku app, the RACK_ENV and RAILS_ENV variables are changed to "production", instead of "staging" which is the value I manually assigned. This started happening a couple of hours ago. A line like this is logged on the activity page on the heroku site on every deploy: v741 app_owner@gmail.com: Add RAILS_ENV, RACK_ENV, PATH, LANG, GEM_PATH config 6 minutes ago
I should talk to heroku support, but it seems that now the only place where questions can be asked is here, they remove the site support...
回答1:
Same here. Fortunately, it does not happen after a rollback.
Fortunately a deploy on production does not set the variables to staging !
EDIT:
Heroku answer on a ticket: Hi, looks like a bug on our end. I'm notifying our ruby team
EDIT 2:
They said the bug was fixed yesterday, and yes, it was. But… the bug has just happened again right now……
来源：https://stackoverflow.com/questions/12702140/heroku-automatically-changing-rails-env-and-rack-env-variables-to-production-o