canvas-lms/db/migrate/20180514142421_rename_switchman_shards_fk_if_necessary.rb

# frozen_string_literal: true

class RenameSwitchmanShardsFkIfNecessary < ActiveRecord::Migration[5.1]
  tag :predeploy

  def up
    if connection.send(:postgresql_version) >= 90400
      alter_constraint(:switchman_shards, find_foreign_key(:switchman_shards, :switchman_shards, column: :delayed_jobs_shard_id), new_name: 'fk_rails_45bd80a9c8')
    else
      remove_foreign_key :switchman_shards, column: :delayed_jobs_shard_id, if_exists: true
      add_foreign_key :switchman_shards, :switchman_shards, column: :delayed_jobs_shard_id
    end
  end
end