Rake task to create dev database fixtures

dev_fixtures.rake

namespace :test do
  	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_migrations"]
	      ActiveRecord::Base.establish_connection(:development)
	      (ActiveRecord::Base.connection.tables - skip_tables).each do |table_name|
	        i = "000"
	        File.open(Rails.root.to_s + "/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
end

# rake test:db:fixtures