Rails / MySQL2: Error - Unknown database
33,287
Solution 1
Have you created the database in MySQL? You should be able to run rake db:create
and have Rails create it for you.
Solution 2
I had the same error, please run the following command on the Command Prompt:
rake db:create
to solve the problem.
Solution 3
Look for the answers of these questions:
- Have you installed the mysql2 gem?
- Is it mentioned in your Gemfile?
- Did you run the command
rake db:create
?
Author by
KidKola
Updated on September 18, 2020Comments
-
KidKola over 3 years
I'm following a basic tutorial in Linda. I have been able to install everything properly now, but when I start my Rails server I get this message when I visit
localhost:3000
:Unknown database 'simple_cms_development'
and then
Rendered /Library/Ruby/Gems/1.8/gems/actionpack-3.0.7/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.0ms) Rendered /Library/Ruby/Gems/1.8/gems/actionpack-3.0.7/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (23.5ms) Rendered /Library/Ruby/Gems/1.8/gems/actionpack-3.0.7/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (29.8ms)