class ModifyKeContentsForMarkdown < ActiveRecord::Migration[5.2]
  # include ActionView::Helpers::SanitizeHelper
  def change
    # def ke_transform_to_md content
    #   sanitize(content, tags: %w(img a span), attributes: %w(src href target style))
    #       .gsub(/^(\n)/, "").gsub(/(\n)+/, "<br />").gsub(/$(\n)/, "")
    #       .gsub(/(\n)+/, "<br />").gsub("\t", "&nbsp;&nbsp;&nbsp;&nbsp;")
    # end
    #
    # MessageDetail.find_each do |m|
    #   content = ke_transform_to_md m.content
    #   puts("content:#{content}")
    #   m.update_column(:content, content)
    # end


  end
end