class ActiveRecord::DatabaseConfigurations::ConnectionUrlResolver

def database_from_path
  if @adapter == "sqlite3"
    # 'sqlite3:/foo' is absolute, because that makes sense. The
    # corresponding relative version, 'sqlite3:foo', is handled
    # elsewhere, as an "opaque".
    uri.path
  else
    # Only SQLite uses a filename as the "database" name; for
    # anything else, a leading slash would be silly.
    uri.path.delete_prefix("/")
  end
end