gitlab-org--gitlab-foss/db/migrate/20171116135628_add_environment_scope_to_clusters.rb

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

  DOWNTIME = false

  disable_ddl_transaction!

  def up
    add_column_with_default(:clusters, :environment_scope, :string, default: '*')
  end

  def down
    remove_column(:clusters, :environment_scope)
  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 AddEnvironmentScopeToClusters < ActiveRecord::Migration[4.2]`
Add environment_scope to cluster table 2017-11-16 04:41:19 -05:00			`include Gitlab::Database::MigrationHelpers`

			`DOWNTIME = false`

			`disable_ddl_transaction!`

			`def up`
			`add_column_with_default(:clusters, :environment_scope, :string, default: '*')`
			`end`

			`def down`
			`remove_column(:clusters, :environment_scope)`
			`end`
			`end`