rake db:migrate not working, Mac OS, Rails 3

Question

I am new to Ruby on Rails. I am trying to learn it and I am working through a Ruby on Rails 3 Tutorial book.

So I created a scaffold for a demo_app and got this:

66-90-244-41:demo_app rodolfopenajr$ rails generate scaffold User name:string email:string

  create  
  create  app/controllers
  create  app/helpers
  create  app/models
  create  app/views/layouts
  create  config/environments
  create  config/initializers
  create  config/locales
  create  db
  create  doc
  create  lib
  create  lib/tasks
  create  log
  create  public/images
  create  public/javascripts
  create  public/stylesheets
  create  script/performance
  create  test/fixtures
  create  test/functional
  create  test/integration
  create  test/performance
  create  test/unit
  create  vendor
  create  vendor/plugins
  create  tmp/sessions
  create  tmp/sockets
  create  tmp/cache
  create  tmp/pids
  create  Rakefile
  create  README
  create  app/controllers/application_controller.rb
  create  app/helpers/application_helper.rb
  create  config/database.yml
  create  config/routes.rb
  create  config/locales/en.yml
  create  db/seeds.rb
  create  config/initializers/backtrace_silencers.rb
  create  config/initializers/inflections.rb
  create  config/initializers/mime_types.rb
  create  config/initializers/new_rails_defaults.rb
  create  config/initializers/session_store.rb
  create  config/environment.rb
  create  config/boot.rb
  create  config/environments/production.rb
  create  config/environments/development.rb
  create  config/environments/test.rb
  create  script/about
  create  script/console
  create  script/dbconsole
  create  script/destroy
  create  script/generate
  create  script/runner
  create  script/server
  create  script/plugin
  create  script/performance/benchmarker
  create  script/performance/profiler
  create  test/test_helper.rb
  create  test/performance/browsing_test.rb
  create  public/404.html
  create  public/422.html
  create  public/500.html
  create  public/index.html
  create  public/favicon.ico
  create  public/robots.txt
  create  public/images/rails.png
  create  public/javascripts/prototype.js
  create  public/javascripts/effects.js
  create  public/javascripts/dragdrop.js
  create  public/javascripts/controls.js
  create  public/javascripts/application.js
  create  doc/README_FOR_APP
  create  log/server.log
  create  log/production.log
  create  log/development.log
  create  log/test.log

Then next thing I was instructed to do was type the command 'rake db:migrate', but I would get this response...

(in /Users/rodolfopenajr/rails_projects/demo_app)

So I tried to figure out the problem by using 'rake db:migrate --trace' and got the following.

66-90-244-41:demo_app rodolfopenajr$ rake db:migrate --trace

(in /Users/rodolfopenajr/rails_projects/demo_app)

** Invoke db:migrate (first_time)

** Invoke environment (first_time)

** Execute environment

** Execute db:migrate

** Invoke db:schema:dump (first_time)

** Invoke environment

** Execute db:schema:dump

I really have no idea what that stuff means or why my rake command isn't working. Can someone help me figure out why the db won't migrate.

Just to note: I have Heroku and Github all set up. Not sure if that is important, but just a FYI.

The log that you supplied seems to be from the "rails new demo_app" command and not from the scaffold command. If the scaffold was run correctly you should amongst other things have a file in /db/migrate/ called something create_user. Can you verify if this is correct? — DanneManne
Please indent your rake db:migrate --trace output, including the command itself. — Ryan Bigg
Thanks guys. I haven't had a chance to view the responses but I appreciate the help. Once I get back to this again, I will reply... hopefully with no more questions. — user570104

Sibevin Wang Sibevin Wang · Accepted Answer · 2012-04-19T07:13:34

I have the same problem and find that db:migrate:up is failed.

After tracing rails source, it seems that the migrate task cannot handle the path which has links inside, i.e., db:migrate is failed if there are links in your app directory path.

You can try to move your app directory to other folder which has no link in its path.

rake db:migrate not working, Mac OS, Rails 3

1 Answers