Dealing with universal Ajax error handling in AngularJS

Question

Dealing with universal Ajax error handling in AngularJS

Previously on my website when it was 100% jQuery, I employed this method:

$.ajaxSetup({
    global: true,
    error: function(xhr, status, err) {
        if (xhr.status == 401) {
           window.location = "./index.html";
        }
    }
});

to establish a universal handler for handling 401 errors. Presently, I have transitioned to using angularjs along with $resource and $http for my server requests. Is there an equivalent approach in angular to set up a global error handler?

javascript ajax angularjs

Answer 1

Answer №1

While developing my website using Angular, I encountered the challenge of handling global 401 errors. After reading a helpful blog post, I decided to implement an HTTP interceptor to address this issue. You may also benefit from checking out the blog post titled "Authentication in AngularJS (or similar) based application.", published by espeo software.

EDIT: Here's the final solution I implemented:

angular.module('myApp', ['myApp.filters', 'myApp.services', 'myApp.directives'], function ($routeProvider, $locationProvider, $httpProvider) {

    var interceptor = ['$rootScope', '$q', function (scope, $q) {

        function success(response) {
            return response;
        }

        function error(response) {
            var status = response.status;

            if (status == 401) {
                window.location = "./index.html";
                return;
            }
            // otherwise
            return $q.reject(response);

        }

        return function (promise) {
            return promise.then(success, error);
        }

    }];
    $httpProvider.responseInterceptors.push(interceptor);

Answer 2

While developing my website using Angular, I encountered the challenge of handling global 401 errors. After reading a helpful blog post, I decided to implement an HTTP interceptor to address this issue. You may also benefit from checking out the blog post titled "Authentication in AngularJS (or similar) based application.", published by espeo software.

EDIT: Here's the final solution I implemented:

angular.module('myApp', ['myApp.filters', 'myApp.services', 'myApp.directives'], function ($routeProvider, $locationProvider, $httpProvider) {

    var interceptor = ['$rootScope', '$q', function (scope, $q) {

        function success(response) {
            return response;
        }

        function error(response) {
            var status = response.status;

            if (status == 401) {
                window.location = "./index.html";
                return;
            }
            // otherwise
            return $q.reject(response);

        }

        return function (promise) {
            return promise.then(success, error);
        }

    }];
    $httpProvider.responseInterceptors.push(interceptor);

Answer 3

Answer №2

Kindly take note that responseInterceptors are no longer supported as of Angular 1.1.4. The following snippet is extracted from the official documentation, demonstrating the updated approach for implementing interceptors.

$provide.factory('myHttpInterceptor', function($q, dependency1, dependency2) {
  return {
    'response': function(response) {
      // handle success scenario
      return response || $q.when(response);
    },

   'responseError': function(rejection) {
      // handle error scenario
      if (canRecover(rejection)) {
        return responseOrNewPromise;
      }
      return $q.reject(rejection);
    }
  };
});

$httpProvider.interceptors.push('myHttpInterceptor');

This is the implementation in my project using Coffeescript:

angular.module("globalErrors", ['appStateModule']).factory "myHttpInterceptor", ($q, $log, growl) ->
  response: (response) ->
    $log.debug "success with status #{response.status}"
    response || $q.when response

  responseError: (rejection) ->
    $log.debug "error with status #{rejection.status} and data: #{rejection.data['message']}"
    switch rejection.status
      when 403
        growl.addErrorMessage "You don't have the right to do this"
      when 0
        growl.addErrorMessage "No connection, internet is down?"
      else
        growl.addErrorMessage "#{rejection.data['message']}"

    // handle error scenario
    $q.reject rejection

.config ($provide, $httpProvider) ->
  $httpProvider.interceptors.push('myHttpInterceptor')

Answer 4

Kindly take note that responseInterceptors are no longer supported as of Angular 1.1.4. The following snippet is extracted from the official documentation, demonstrating the updated approach for implementing interceptors.

$provide.factory('myHttpInterceptor', function($q, dependency1, dependency2) {
  return {
    'response': function(response) {
      // handle success scenario
      return response || $q.when(response);
    },

   'responseError': function(rejection) {
      // handle error scenario
      if (canRecover(rejection)) {
        return responseOrNewPromise;
      }
      return $q.reject(rejection);
    }
  };
});

$httpProvider.interceptors.push('myHttpInterceptor');

This is the implementation in my project using Coffeescript:

angular.module("globalErrors", ['appStateModule']).factory "myHttpInterceptor", ($q, $log, growl) ->
  response: (response) ->
    $log.debug "success with status #{response.status}"
    response || $q.when response

  responseError: (rejection) ->
    $log.debug "error with status #{rejection.status} and data: #{rejection.data['message']}"
    switch rejection.status
      when 403
        growl.addErrorMessage "You don't have the right to do this"
      when 0
        growl.addErrorMessage "No connection, internet is down?"
      else
        growl.addErrorMessage "#{rejection.data['message']}"

    // handle error scenario
    $q.reject rejection

.config ($provide, $httpProvider) ->
  $httpProvider.interceptors.push('myHttpInterceptor')

Answer 5

Answer №3

To implement the HTTP interceptor, follow these steps:

(function(){
  var httpInterceptorSetup = function ($provide, $httpProvider) {
    $provide.factory('httpInterceptor', function ($q) {
      return {
        response: function (response) {
          return response || $q.when(response);
        },
        responseError: function (rejection) {
          if(rejection.status === 401) {
            // Unauthorized access
          }
          return $q.reject(rejection);
        }
      };
    });
    $httpProvider.interceptors.push('httpInterceptor');
  };
  angular.module("appModule").config(httpInterceptorSetup);
}());

Answer 6

To implement the HTTP interceptor, follow these steps:

(function(){
  var httpInterceptorSetup = function ($provide, $httpProvider) {
    $provide.factory('httpInterceptor', function ($q) {
      return {
        response: function (response) {
          return response || $q.when(response);
        },
        responseError: function (rejection) {
          if(rejection.status === 401) {
            // Unauthorized access
          }
          return $q.reject(rejection);
        }
      };
    });
    $httpProvider.interceptors.push('httpInterceptor');
  };
  angular.module("appModule").config(httpInterceptorSetup);
}());

Dealing with universal Ajax error handling in AngularJS

Answer №1

Answer №2

Answer №3

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