DZone
Thanks for visiting DZone today,
Edit Profile
  • Manage Email Subscriptions
  • How to Post to DZone
  • Article Submission Guidelines
Sign Out View Profile
  • Post an Article
  • Manage My Drafts
Over 2 million developers have joined DZone.
Log In / Join
  • Refcardz
  • Trend Reports
  • Webinars
  • Zones
  • |
    • Agile
    • AI
    • Big Data
    • Cloud
    • Database
    • DevOps
    • Integration
    • IoT
    • Java
    • Microservices
    • Open Source
    • Performance
    • Security
    • Web Dev
DZone >

Synchronizing Rails DB Contents Via Fixtures

Snippets Manager user avatar by
Snippets Manager
·
Jan. 31, 07 · · Code Snippet
Like (0)
Save
Tweet
490 Views

Join the DZone community and get the full member experience.

Join For Free
The following rake task will dump the contents of the current environment's database to YAML fixtures. Stick the following in lib/tasks/fixtures.rake:


namespace :db do
  namespace :fixtures do
    
    desc 'Create YAML test fixtures from data in an existing database.  
    Defaults to development database.  Set RAILS_ENV to override.'
    task :dump => :environment do
      sql  = "SELECT * FROM %s"
      skip_tables = ["schema_info"]
      ActiveRecord::Base.establish_connection(:development)
      (ActiveRecord::Base.connection.tables - skip_tables).each do |table_name|
        i = "000"
        File.open("#{RAILS_ROOT}/test/fixtures/#{table_name}.yml", 'w') do |file|
          data = ActiveRecord::Base.connection.select_all(sql % table_name)
          file.write data.inject({}) { |hash, record|
            hash["#{table_name}_#{i.succ!}"] = record
            hash
          }.to_yaml
        end
      end
    end
  end
end


After making changes to the database that you'd like to dump to fixtures:


rake db:fixtures:dump


After checking out updated fixtures from SVN:


rake db:migrate
rake db:fixtures:load
Fixture (tool)

Opinions expressed by DZone contributors are their own.

Popular on DZone

  • 6 Best Books to Learn Multithreading and Concurrency in Java
  • Querying Kafka Topics Using Presto
  • Maven Tutorial: Nice and Easy [Video]
  • OpenTelemetry in Action: Identifying Database Dependencies

Comments

Partner Resources

ABOUT US

  • About DZone
  • Send feedback
  • Careers
  • Sitemap

ADVERTISE

  • Advertise with DZone

CONTRIBUTE ON DZONE

  • Article Submission Guidelines
  • MVB Program
  • Become a Contributor
  • Visit the Writers' Zone

LEGAL

  • Terms of Service
  • Privacy Policy

CONTACT US

  • 600 Park Offices Drive
  • Suite 300
  • Durham, NC 27709
  • support@dzone.com
  • +1 (919) 678-0300

Let's be friends:

DZone.com is powered by 

AnswerHub logo