$httpProvider interceptor not working when $http is injected into a factory
I have a service called 'api', registered something like this:
angular
.module('myApp')
.factory('api', ['$http', function ($http) {
// do stuff with $http.get() etc here.
}]);
... and $http is being customized like this elsewhere:
angular
.module('myApp')
.factory('httpInterceptor', ['$rootScope', function ($rootScope) {
// do stuff to intercept http requests and auth things here
}]);
angular
.module('myApp')
.config(function ($httpProvider) {
$httpProvider.interceptors.push('httpInterceptor');
});
The interceptors are working when I directly inject $http into a controller, but when I use the api service in my controller, the $http customizations are not working. Looks like Angular does not add the intercepts by the point it's required by the factory I created.
How do I solve this?
The question was based on a wrong premise. The interceptors are in fact working, I was just using the wrong hook point. Instead of customizing the responseError property of the interceptor object, I was trying to intercept errors from the response property itself. This is why I thought the interceptors weren't working at all.
This problem does not really exist. The provider's interceptors are working correctly even in a factory.
You can try to make the httpInterceptor a variable inside the config instead of making it a factory:
angular
.module('myApp')
.config(function ($httpProvider) {
var httpInterceptor = ['$rootScope',
function($rootScope) {
// do stuff to intercept http requests and auth things here
}
];
$httpProvider.responseInterceptors.push(httpInterceptor);
});
Please note that I've also changed $httpProvider.interceptors to $httpProvider.responseInterceptors and the parameter passed to push() is not a string.
Let me know if that helps.
EDIT:
You can also consider using this plugin: https://github.com/witoldsz/angular-http-auth. It has this cool feature after the interception: "The authService will then retry all the requests previously failed due to HTTP 401 response."
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