Class: OpenHood::Rake::SequelTask

Inherits:
Rake::TaskLib
  • Object
show all
Defined in:
lib/openhood/rake/sequel.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SequelTask 



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# File 'lib/openhood/rake/sequel.rb', line 30

def initialize
  desc "Sequel migration"
  namespace :db do
    namespace :migrate do
      desc "Rollbacks the database one migration and re migrate up. If you want to rollback more than one step, define STEP=x"
      task :redo => [ "db:rollback", "db:migrate" ]
    end

    desc "Migrate the database through scripts in db/migrate. Target specific version with VERSION=x"
    task :migrate do
      connection
      options = default_options
      options[:target] = ENV["VERSION"].to_i if ENV["VERSION"]
      Sequel::Migrator.run(Sequel::Model.db, path, options)
    end

    desc "Rolls the schema back to the previous version. Specify the number of steps with STEP=n"
    task :rollback do
      connection
      step = ENV["STEP"] ? ENV["STEP"].to_i : 1
      target = Sequel::Migrator.get_current_migration_version(Sequel::Model.db) - step
      Sequel::Migrator.run(Sequel::Model.db, path, default_options.merge({:target => target}))
    end

    desc "Retrieves the current schema version number"
    task :version do
      connection
      puts "Current version: #{Sequel::Migrator.get_current_migration_version(Sequel::Model.db, default_options)}"
    end
  end
end

Instance Method Details

#base_path ⇒ Object 



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# File 'lib/openhood/rake/sequel.rb', line 9

def base_path
  File.expand_path('.')
end

#config ⇒ Object 



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# File 'lib/openhood/rake/sequel.rb', line 17

def config
  environment = ENV["RACK_ENV"] || "development"
  @config ||= YAML.load_file(File.join(base_path, "config", "#{environment}.yml"))
end

#connection ⇒ Object 



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# File 'lib/openhood/rake/sequel.rb', line 22

def connection
  Sequel.connect(config[:db][:uri])
end

#default_options ⇒ Object 



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# File 'lib/openhood/rake/sequel.rb', line 26

def default_options
  {:table => :"#{config[:app_name]}_schema_info", :column => :version}
end

#path ⇒ Object 



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# File 'lib/openhood/rake/sequel.rb', line 13

def path
  File.join(base_path, "migrations")
end