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Home/ Questions/Q 210529
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Editorial Team
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Editorial Team
Asked: May 11, 20262026-05-11T18:00:49+00:00 2026-05-11T18:00:49+00:00

I would like to define a constant (like the admin-email-adress) depending on the environment.

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I would like to define a constant (like the admin-email-adress) depending on the environment. What is the easiest way to do this?

I’d like something like that, in development.rb (or test or production.rb):

ADMIN_EMAIL = "foo@bar.com"

And be able to access it by calling something like

ADMIN_EMAIL

Is there an easy way or do I have to do something like creating a module and initialize it and stuff (and in case you’re wondering if I have any idea about this, unfortunately: I don’t)

It works this way, but one has to
restart the server, for the constants
to take effect.

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  1. Editorial Team
    Editorial Team
    2026-05-11T18:00:49+00:00Added an answer on May 11, 2026 at 6:00 pm

    In config/environments/, there are some configuration files that get executed based on what environment you’re currently in. Try defining a constant in one of those.

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