Sinatra HStore setup

Gemfile

source :rubygems                                                                                                                                                                                                                                                                         gem "sinatra"                                                                                       
gem "pg"                                                                                                                                    gem "activerecord-postgres-hstore"                                                                                                          
gem "sinatra-activerecord"                                                                                                                                                    

Migrations

 class Setuphstore < ActiveRecord::Migration                                                                                                 
   def up                                                                                                                                    
     execute "CREATE EXTENSION hstore"                                                                                                       
   end                                                                                                                                       
                                                                                                                                              
   def down                                                                                                                                  
     execute "DROP EXTENSION hstore"                                                                                                         
   end                                                                                                                                       
 end

class CreateSettings < ActiveRecord::Migration                                                                                                  
  def up                                                                                                                                        
    create_table :settings do |t|                                                                                                               
      t.string :name                                                                                                                            
      t.hstore :data                                                                                                                            
      t.timestamps                                                                                                                              
    end                                                                                                                                         
  end                                                                                                                                           
                                                                                                                                                
  def down                                                                                                                                      
    drop_table :settings                                                                                                                        
  end                                                                                                                                           
end        

Rakefile

 require 'sinatra/activerecord/rake'