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Home/ Questions/Q 7528283
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Editorial Team
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Editorial Team
Asked: May 30, 20262026-05-30T04:20:10+00:00 2026-05-30T04:20:10+00:00

I have a perfectly working rails application including devise authentication. I created a second

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I have a perfectly working rails application including devise authentication.

I created a second separated rails application for the public website, which runs as separate heroku application.

The problem is: It should be possible to sign up and sign in to the main application using forms in the public website.

How is it possible to authenticate users using devise through a form in a different application? What’s the best approach?

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  1. Editorial Team
    Editorial Team
    2026-05-30T04:20:12+00:00Added an answer on May 30, 2026 at 4:20 am

    If your applications use different subdomains but are under the same domain, this article might help.

    And Chris Oliver took an approach to implement this in Rails 3.1 here

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