code: function buildURL(connection) {
    var scheme;
    var url;
  
    switch (connection.adapter) {
      case 'sails-mysql':
        scheme = 'mysql';
        break;
      case 'sails-postgresql':
        scheme = 'postgres';
        break;
      case 'sails-mongo':
        scheme = 'mongodb'
        break;
      default:
        throw new Error('migrations not supported for ' + connection.adapter);
    }
  
    // return the connection url if one is configured
    if (connection.url) {
      return connection.url;
    }
  
    url = scheme + '://';
    if (connection.user) {
      url += connection.user;
      if (connection.password) {
        url += ':' + encodeURIComponent(connection.password)
      }
      url += '@';
    }
    url += connection.host || 'localhost';
    if (connection.port) {
      url += ':' + connection.port;
    }
    if (connection.database) {
      url += '/' + encodeURIComponent(connection.database);
    }
  
    var params = [];
    if (connection.multipleStatements) {
      params.push('multipleStatements=true');
    }
  
    if (params.length > 0) {
      url += '?' + params.join('&');
    }
  
    return url;
  }
docs: Build a URL from the Sails connection config.
  
  @param {object} connection Sails connection config.
  @returns {string} URL for connecting to the specified database.
  @throws Error if adapter is not supported.