Always keep the order of schema.rb

alphabetize.rb

task :'db:schema:dump' => :'db:alphabetize_columns'

task :'db:alphabetize_columns' do
  class << ActiveRecord::Base.connection
    alias_method :old_columns, :columns unless self.instance_methods.include?("old_columns")

    def columns(*args)
      old_columns(*args).sort_by(&:name)
    end
  end
end

Source: https://www.pgrs.net/2008/03/12/alphabetize-schema-rb-columns/