Method: Migr8::RepositoryOperation#show

Defined in:

lib/migr8.rb

#show(version = nil, load_from_db = False) ⇒ Object

# File 'lib/migr8.rb', line 425

def show(version=nil, load_from_db=False)
  migs = load_from_db ? @repo.migrations_in_history_table() \
                      : @repo.migrations_in_history_file()
  if version
    mig = migs.find {|mig| mig.version == version }  or
      raise MigrationError.new("#{version}: no such migration.")
  else
    mig = migs.last or
      raise MigrationError.new("no migrations to show.")
  end
  if load_from_db
    @repo.fetch_details_from_history_table(mig)
    #assert mig.instance_variable_get('@up_script')   != nil
    #assert mig.instance_variable_get('@down_script') != nil
  end
  #
  buf = ""
  buf   << "version:     #{mig.version}\n"
  buf   << "desc:        #{mig.desc}\n"
  buf   << "author:      #{mig.author}\n"
  buf   << "vars:\n"                           unless load_from_db
  mig.vars.each do |k, v|
    buf << "  - %-10s " % ["#{k}:"] << v.inspect << "\n"
  end                                          unless load_from_db
  buf   << "applied_at:  #{mig.applied_at}\n"  if load_from_db
  buf   << "\n"
  buf   << "up: |\n"
  buf   << mig.up_script.gsub(/^/, '  ')
  buf   << "\n"
  buf   << "down: |\n"
  buf   << mig.down_script.gsub(/^/, '  ')
  buf   << "\n"
  return buf
end