Class: Yad::Db::Rails

Inherits:
Object
  • Object
show all
Defined in:
lib/yad/db/rails.rb

Class Method Summary collapse

Class Method Details

.build_create_db_command(release_directory, options = {}) ⇒ Object 



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# File 'lib/yad/db/rails.rb', line 4

def self.build_create_db_command(release_directory, options = {})
  default_options = { :app_env  => 'production',
    :rake_cmd => 'rake'
  }
  options = default_options.merge(options)
  "cd #{release_directory}; #{options[:rake_cmd]} RAILS_ENV=#{options[:app_env]} db:create"
end

.build_migrate_db_command(release_directory, options = {}) ⇒ Object 



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# File 'lib/yad/db/rails.rb', line 12

def self.build_migrate_db_command(release_directory, options = {})
  default_options = { :app_env      => 'production',
    :rake_cmd     => 'rake',
    :migrate_args => '',
  }
  options = default_options.merge(options)
  "cd #{release_directory}; #{options[:rake_cmd]} RAILS_ENV=#{options[:app_env]} db:migrate #{options[:migrate_args]}"
end

.define_tasks ⇒ Object 



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# File 'lib/yad/db/rails.rb', line 21

def self.define_tasks
  return if @tasks_already_defined
  @tasks_already_defined = true
  namespace :yad do
    namespace :db do

      desc "Creates the database for the application"
      remote_task :create, :roles => :app do
        break unless target_host == Rake::RemoteTask.hosts_for(:app).first
        options = Rake::RemoteTask.get_options_hash(:app_env, :rake_cmd)
        cmd = Yad::Db::Rails.build_create_db_command(current_path, options)
        run(cmd)
        puts("database created")
      end
      
      desc "Runs migrations on the database"
      remote_task :migrate, :roles => :app do
        break unless target_host == Rake::RemoteTask.hosts_for(:app).first
        options = Rake::RemoteTask.get_options_hash(:app_env, :rake_cmd, :migrate_args)
        target = Rake::RemoteTask.fetch(:migrate_target, false)
        if target
          target_directory = case target.to_sym
                             when :current then current_path
                             when :latest  then latest_release
                             else raise ArgumentError, "unknown migration target #{target.inspect}"
                             end
        else
          target_directory = latest_release
        end
        cmd = Yad::Db::Rails.build_migrate_db_command(target_directory, options)
        run(cmd)
        puts("database migrations completed")
      end
      
    end
  end
end