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Editorial Team
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Asked: 2026-06-17T11:10:40+00:00

After successfully configuring devise with users I am now trying to add an Admin

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After successfully configuring devise with users I am now trying to add an Admin role in preparation of using rails_admin.

I followed these instructions (https://github.com/plataformatec/devise/wiki/How-To:-Add-an-Admin-role) to add the admin role to devise even though the migration generated looked completely different from that in the instructions. I then ran “bundle exec rake db:migrate” only to get the error:

PG::Error: ERROR:  relation "admins" already exists

At this point I had not attempted to install rails_admin because I wanted to get devise working fully first.

Any ideas why I got this error when I did not previously have an admin model?

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1 Answer

  1. Editorial Team

    Solution thanks to wildplasser: run db:drop -> db:create -> db:migrate to reset the database!

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