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Editorial Team
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Asked: 2026-06-05T23:15:23+00:00

I have this RoR app that calls to RAILS_ROOT. When running it using rails

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I have this RoR app that calls to RAILS_ROOT.
When running it using rails server (or when checking with ./script/console) the value contains the app’s root.
When deploying and running it with Heroku, however (or when checking with heroku console), the returned path is ‘/app’.

Why’s that?

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1 Answer

  1. Editorial Team

    Because on heroku your app is in the /app folder (from the root /).
    It is NOT the app folder of your application, which is /app/app.

    The file structure is:

    /app/app/...
/app/config/..
/app/Gemfile
...

    You can make an experiment.

    Run heroku console and discover the file structure.

    > heroku console
> puts `ls`
> puts `pwd`
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