class AddServiceNameToActiveStorageBlobs

# File activestorage/db/update_migrate/20190112182829_add_service_name_to_active_storage_blobs.rb, line 16
def down
  return unless table_exists?(:active_storage_blobs)

  remove_column :active_storage_blobs, :service_name
end

# File activestorage/db/update_migrate/20190112182829_add_service_name_to_active_storage_blobs.rb, line 2
def up
  return unless table_exists?(:active_storage_blobs)

  unless column_exists?(:active_storage_blobs, :service_name)
    add_column :active_storage_blobs, :service_name, :string

    if configured_service = ActiveStorage::Blob.service.name
      ActiveStorage::Blob.unscoped.update_all(service_name: configured_service)
    end

    change_column :active_storage_blobs, :service_name, :string, null: false
  end
end