500.js

/**
 * Default error handler
 *
 * If an error is thrown, Sails will respond using this default error handler
 *
 * For more information on error handling in Sails/Express, check out:
 * http://expressjs.com/guide.html#error-handling
 */

module.exports[500] = function serverErrorOccurred(errors, req, res, expressErrorHandler) {

  var statusCode = 500;

  // Ensure that `errors` is a list
  var displayedErrors = (typeof errors !== 'object' || !errors.length) ? [errors] : errors;

  // Build data for response
  var response = {
    status: statusCode
  };

  // Ensure that each error is formatted correctly
  var inspect = require('util').inspect;
  for (var i in displayedErrors) {

    // Make error easier to read, and normalize its type
    if (!(displayedErrors[i] instanceof Error)) {
      displayedErrors[i] = new Error(inspect(displayedErrors[i]));
    }

    displayedErrors[i] = {
      message: displayedErrors[i].message,
      stack: displayedErrors[i].stack
    };

    // Log error to log adapter
    sails.log.error(displayedErrors[i].stack);
  }

  // In production, don't display any identifying information about the error(s)
  if (sails.config.environment === 'development') {
    response.errors = displayedErrors;
  }

  // If the user-agent wants a JSON response,
  // respond with a JSON-readable version of errors
  if (req.wantsJSON) {
    return res.json(response, response.status);
  }

  // Otherwise, if it can be rendered, the `views/500.*` page is rendered
  // If an error occurs rendering the 500 view ITSELF,
  // use the built-in Express error handler to render the errors
  var view = '500';
  res.render(view, response, function (err) {
    if (err) {
      return expressErrorHandler(errors);
    }
    res.render(view, response);
  });

};