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Editorial Team
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Asked: 2026-05-19T10:51:24+00:00

I’ve recently upgraded to Rails 3 and am getting the following issue when trying

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I’ve recently upgraded to Rails 3 and am getting the following issue when trying to run rake db:create to create a mysql database of which has been defined in database.yml

Some info about my setup:

running snow leopard
rails gem v3.0.3
mysql gem v2.8.1
mysql 5.5.8

I’m presented with this issue:

$rake db:create

(in /Users/elliottheis/Sites/demoProject)

rake aborted!

uninitialized constant Mysql::Error

(See full trace by running task with –trace)

Does anyone have any ideas how to solve this, it’s driving me nuts!

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1 Answer

  1. Editorial Team

    Make sure Mysql is in your Gemfile and the database.yml is setup for Mysql. Uninitialized constant simply and will most likely always mean you have not told Rails where to find it. It you can type mysql -uroot into Terminal and see the Version then you know that MySql is fine. Try post a bit more information and we will see if we cant get to the bottom of this.

    rake -r mysql db:create –trace

    If this does not work then something has gone wrong in the installation. Try This.

    Uninstall Mysql – Follow these instructions
    Reinstall Mysql – Follow these instructions

    Let us know how you get on and tell us the solution when you get it. All the best

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