Skip to main content

Create migration files in rails from existing mysql table


Create migration files in rails from existing mysql table?

  • Start by referencing your existing MySQL database in database.yml
  • run rake db:schema:dump to generate the schema.rb file
  • Paste the create_table methods from your schema.rb into a new migration, and Voila!
##generate schema.rb
ruby script/generate migration Tabledata

migration file inside add the schema.rb
remove this line
1)ActiveRecord::Schema.define(:version => 0) do
end
2)rake db:migrate

 

 

Comments

Post a Comment

Popular posts from this blog

Create dynamic sitemap on ruby on rails

Sitemaps are an easy way for webmasters to inform search engines about pages on their sites that are available for crawling. In its simplest form, a Sitemap is an XML file that lists URLs for a site along with additional metadata about each URL (when it was last updated, how often it usually changes, and how important it is, relative to other URLs in the site) so that search engines can more intelligently crawl the site. It’s basically a XML file describing all URLs in your page: The following example shows a Sitemap that contains just one URL and uses all optional tags. The optional tags are in italics. <?xml version="1.0" encoding="UTF-8"?> <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">    <url>       <loc>http://www.example.com/</loc>       <lastmod>2005-01-01</lastmod>       <changefreq>monthly</changefreq>     ...
Post a Comment
Read more

Omniauth Linked in Ruby On Rails

def get_linkedin_user_data      omniauth = request.env["omniauth.auth"]      dat=omniauth.extra.raw_info      linked_app_key = "xxxxxxx"      linkedin_secret_key = "yyyyyyy"      client = LinkedIn::Client.new(linked_app_key,linkedin_secret_key)      client.authorize_from_access(omniauth['credentials']['token'],omniauth['credentials']['secret'])      connections=client.connections(:fields => ["id", "first-name", "last-name","picture-url"])      uid=omniauth['uid']      token=omniauth["credentials"]["token"]      secret=omniauth["credentials"]["secret"]   #linked user data     omniauth = request.env["omniauth.auth"]      data             = omniauth.info      user_name...
Post a Comment
Read more

Error malloc(): memory corruption nginx with passenger?

Error malloc(): memory corruption nginx with passenger Passenger issue resolving steps :  sudo gem uninstall passenger(uninstall all passenger) sudo gem install passenger sudo passenger-install-nginx-module --auto --auto-download --prefix=/opt/nginx --extra-configure-flags=none Update nginx config file with new passenger version and restart the nginx
1 comment
Read more