db/migrate/20190703001120_default_milestone_to_nil.rb


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# frozen_string_literal: true

class DefaultMilestoneToNil < ActiveRecord::Migration[5.1]
  DOWNTIME = false

  def up
    execute(update_board_milestones_query)
  end

  def down
    # no-op
  end

  private

  # Only 105 records to update, as of 2019/07/18
  def update_board_milestones_query
    <<~HEREDOC
   UPDATE boards
     SET milestone_id = NULL
   WHERE boards.milestone_id = -1
    HEREDOC
  end
end