express-request-ajax-error

request-ajax error handler for express

Install

$ npm install --save express-request-ajax-error

Usage

Below is a example of usage. test/fixture/app.js also have a similar example.

var express = require('express');
var request = require('request');
var requestAjaxError = require('express-request-ajax-error');
 
var app = express();
app.use(function(req, res, next) {
  // bind error handler to `res.locals`
  res.locals.apiError = requestAjaxError(req, res, next);
});
 
app.get('/', function(req, res, next){
  request('/my_api', {
    // use as callback
    error: res.locals.apiError,
    success: function(){
      res.send('ok');
    }
  });
});

Logout Callback

If the API returns a 401 code you should logout the user. Provide a logout callback and the module will do it for you.

res.locals.apiError = requestAjaxError(req, res, next, function(){
  // logout user here
  res.clearCookie('my_login_cookie');
  res.redirect('/');
});

Thrown Error Object

Variables provided with the error object:

• err.url API url that has caused it
• err.status API HTTP request statusCode

backbone

Backbone.ajax error handler that maps this module according to Backbone.sync. Below is a example of usage.

// one time setup
Backbone.ajax = require('request-ajax');
 
// ...
 
// bind to express request
var backboneRequestAjaxError = require('express-request-ajax-error').backbone(req, res, next, function(){
  res.redirect('/');
});
 
// ...
 
// use
var model = new Backbone.Model();
model.fetch({
  error: backboneRequestAjaxError
});