Intercept XHR/Ajax requests with AngularJS http interceptors. This allows you to globally intercept and modify requests and responses. You don't need to declare all of the methods, just the ones you need. Some example uses would be logging errors, adding extra headers, or triggering 'loading' screens. This intercepts ALL requests/responses, so y…

angularjs-interceptor.js

// Intercepting HTTP calls with AngularJS.
angular.module('MyApp', [])
.config(function ($provide, $httpProvider) {
  
  // Intercept http calls.
  $provide.factory('MyHttpInterceptor', function ($q) {
    return {
      // On request success
      request: function (config) {
        // console.log(config); // Contains the data about the request before it is sent.

        // Return the config or wrap it in a promise if blank.
        return config || $q.when(config);
      },

      // On request failure
      requestError: function (rejection) {
        // console.log(rejection); // Contains the data about the error on the request.
        
        // Return the promise rejection.
        return $q.reject(rejection);
      },

      // On response success
      response: function (response) {
        // console.log(response); // Contains the data from the response.
        
        // Return the response or promise.
        return response || $q.when(response);
      },

      // On response failture
      responseError: function (rejection) {
        // console.log(rejection); // Contains the data about the error.
        
        // Return the promise rejection.
        return $q.reject(rejection);
      }
    };
  });

  // Add the interceptor to the $httpProvider.
  $httpProvider.interceptors.push('LoggingHttpInterceptor');

});

Worth noting this only works for Angular 1.1.4 and above. :)

Did you mean to push MyHttpInterceptor to the interceptors array instead?

@kylebuch8 was thinking the same thing :) MyHttpInterceptor instead of LoggingHttpInterceptor or perhaps changing the name in $provide.factory

The last line should be

// Add the interceptor to the $httpProvider.
$httpProvider.interceptors.push('MyHttpInterceptor');

I was not aware that http interceptors exist and you can do that. This is exactly the kind of solution I've been looking for for the project I am currently working on. Thank you so much.

Nice thing about this is you can modify requests for UI router partial loading.

With token?

doesnt work , using angular 1.4

In line 29 why do we need the $q.when(response) if it's empty?

Can confirm this doesn't seem to work in Angular 1.4.8. Which is a shame.

Does this work with iframe requests?

@vejandla: Nope. It doesn't.