Using `$mdToast` inside an interceptor triggering circular dependency

Question

Question:

How can I use $mdToast inside an interceptor without triggering the error?

Setup:

Interceptor definition:

(function () {
  'use strict';

  angular
    .module('app.components.http-errors-interceptors')
    .factory('HttpError500Interceptor', HttpError500Interceptor);

  /* @ngInject */
  function HttpError500Interceptor($q,
                                   $mdToast,
                                   $filter) {

    var interceptor           = {};
    interceptor.responseError = responseError;

    function responseError(responseError) {
      if (responseError.status === 500) {
        $mdToast.show($mdToast.simple()
                              .content($filter('translate')('APP.COMPONENTS.HTTP_ERRORS_INTERCEPTORS.500'))
                              .position('bottom right')
                              .hideDelay(5000));
      }
      return $q.reject(responseError);
    }

    return interceptor;
  }
})();

Interceptor config:

(function () {
  'use strict';

  angular
    .module('app.components.http-errors-interceptors')
    .config(moduleConfig);

  /* @ngInject */
  function moduleConfig($httpProvider) {
    $httpProvider.interceptors.push('HttpError500Interceptor');
  }
})();

Issue:

When I load the application it triggers the following error:

Uncaught Error: [$injector:cdep] Circular dependency found: $http <- $templateRequest <- $$animateQueue <- $animate <- $$interimElement <- $mdToast <- HttpError500Interceptor <- $http <- $templateFactory <- $view <- $state

Answer 1

One work around that has helped me in the past is to use $injector to get your dependency at runtime instead of at configuration time. So, something like:

  /* @ngInject */
  function HttpError500Interceptor($q,
                                   $injector,
                                   $filter) {
    function responseError(responseError) {
      var $mdToast = $injector.get('$mdToast');

When your cyclic dependency does not cause problems, which it probably doesn't in this case, this will do the trick.