angularjs - Is there a way to request $http for an interceptor?

Question

The idea is to get a data from another source in certain cases, so I have this stub:

factory("interceptor", function ($q, $location, $http) {
    return function (promise) {
        return promise;
    }
}

which fails with

[$injector:cdep] Circular dependency found: interceptor <- $http

Also tried to inject $injector and retrieve $http using that, with same results. Any ideas?

.config is nothing but declaration:

.config(function ($httpProvider) {
    $httpProvider.responseInterceptors.push('interceptor');
});

Answer 1

Inject $injector to interceptor:

Use it to get $http inside the returned object within callback functions.

Here is an example

app.config(function ($httpProvider) {
  $httpProvider.interceptors.push('interceptor');
});

app.factory("interceptor", function ($q, $location, $injector) {
  return {
    request: function(config){      
      var $http = $injector.get('$http');
      console.dir($http);
      return config;
    }
  }
});

app.run(function($http){
  $http.get('/')
});