db/migrate/20140414131055_change_state_to_allow_empty_merge_request_diffs.rb


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class ChangeStateToAllowEmptyMergeRequestDiffs < ActiveRecord::Migration[4.2]
  def up
    change_column :merge_request_diffs, :state, :string, null: true,
                  default: nil
  end

  def down
    change_column :merge_request_diffs, :state, :string, null: false,
                  default: 'collected'
  end
end