Class: DelayHenka::ScheduledChange

Inherits:
ApplicationRecord show all
Defined in:
app/models/delay_henka/scheduled_change.rb

Constant Summary collapse

STATES = 
{
  STAGED: 'staged',
  REPLACED: 'replaced',
  COMPLETED: 'completed',
  ERRORED: 'errored'
}

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.schedule(record:, changes:, by_id:, schedule_at: Time.current) ⇒ Object 



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# File 'app/models/delay_henka/scheduled_change.rb', line 20

def self.schedule(record:, changes:, by_id:, schedule_at: Time.current)
  Keka.run do
    service = WhetherSchedule.new(record)
    new_changes = changes.each_with_object([]) do |(attribute, new_val), accum|
      old_val = record.public_send(attribute)
      cleaned_new_val = cleanup_val(new_val)
      decision = service.make_decision(attribute, cleaned_new_val)
      if decision.ok?
        accum << new(
          changeable: record,
          submitted_by_id: by_id,
          attribute_name: attribute,
          old_value: old_val,
          new_value: cleaned_new_val,
          schedule_at: schedule_at
        )
      elsif decision.msg
        return decision # error present
      else
        # otherwise do nothing - maybe no change is made
      end
    end

    transaction do
      new_changes.each(&:save!)
    end
  end
end

Instance Method Details

#apply_change ⇒ Object 



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# File 'app/models/delay_henka/scheduled_change.rb', line 49

def apply_change
  if changeable
    if changeable.update(attribute_name => new_value)
      update!(state: STATES[:COMPLETED])
    else
      update!(state: STATES[:ERRORED], error_message: changeable.errors.full_messages.join(', '))
    end
  else
    update_columns(state: STATES[:ERRORED], error_message: 'Target record cannot be found')
  end
end

#replace_change ⇒ Object 



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# File 'app/models/delay_henka/scheduled_change.rb', line 61

def replace_change
  update(state: STATES[:REPLACED])
end