Class: ActiveRecord::Migration::CommandRecorder

Inherits:
Object
  • Object
show all
Defined in:
lib/active_record/migration/ext/command_recorder.rb

Instance Method Summary collapse

Instance Method Details

#dup ⇒ Object 



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# File 'lib/active_record/migration/ext/command_recorder.rb', line 64

def dup
  CommandRecorder.new(delegate).tap do |recorder|
    recorder.commands = commands
  end
end

#inverse ⇒ Object

Returns the inverse of these commands — the same as if they had been recorded with revert: each command is reverted and in the reverse order.



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# File 'lib/active_record/migration/ext/command_recorder.rb', line 72

def inverse
  dup.tap do |recorder|
    recorder.commands = commands.reverse.map do |(command, args, _block)|
      inverse_of(command, args)
    end
  end
end