gitlab-org--gitlab-foss/db/migrate/20170503114228_add_description_to_snippets.rb

class AddDescriptionToSnippets < ActiveRecord::Migration[4.2]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  def change
    add_column :snippets, :description, :text
    add_column :snippets, :description_html, :text
  end
end
Add version 4.2 to all existing migrations DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912 2018-11-13 02:27:31 -05:00			`class AddDescriptionToSnippets < ActiveRecord::Migration[4.2]`
Support descriptions for snippets 2017-05-03 11:26:49 -04:00			`include Gitlab::Database::MigrationHelpers`

			`DOWNTIME = false`

			`disable_ddl_transaction!`

			`def change`
			`add_column :snippets, :description, :text`
			`add_column :snippets, :description_html, :text`
			`end`
			`end`