express-restify-mt-mongoose/lib/errorHandler.js

Easily create a flexible REST interface for mongoose models

'use strict';

var http = require('http');

module.exports = function (options) {
  return function (req, res, next) {
    return function (err) {
      if (err.message === http.STATUS_CODES[404] || req.params.id && err.path === options.idProperty && err.name === 'CastError') {
        req.erm.statusCode = 404;
      } else {
        req.erm.statusCode = req.erm.statusCode && req.erm.statusCode >= 400 ? req.erm.statusCode : 400;
      }

      options.onError(err, req, res, next);
    };
  };
};
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