db/migrate/20210423171304_re_order_fk_source_project_id_in_merge_requests.rb


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# frozen_string_literal: true

class ReOrderFkSourceProjectIdInMergeRequests < ActiveRecord::Migration[6.0]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  OLD_SOURCE_PROJECT_FK = 'fk_3308fe130c'
  NEW_SOURCE_PROJECT_FK = 'fk_source_project'

  def up
    add_concurrent_foreign_key :merge_requests, :projects, column: :source_project_id, on_delete: :nullify, name: NEW_SOURCE_PROJECT_FK

    remove_foreign_key_if_exists :merge_requests, column: :source_project_id, name: OLD_SOURCE_PROJECT_FK
  end

  def down
    add_concurrent_foreign_key :merge_requests, :projects, column: :source_project_id, on_delete: :nullify

    remove_foreign_key_if_exists :merge_requests, column: :source_project_id, name: NEW_SOURCE_PROJECT_FK
  end
end