How to inject provider from another module in Angular.js

Question

Why this example not work? jsfiddle I get error what provider not found.

var m1 = angular.module('m1', [])
    .provider('test', function() {
        return {
            $get: function() {
                return 'Hello from provider';
            }
        }
     });

var m2 = angular.module('m2', ['m1'])
    .config(['test', function(test) {
        alert(test);
    }]);

ivarni · Accepted Answer · 2013-10-05 10:58:28Z

3

In the config function you do not have access to it, try using the run method.

var m2 = angular.module('m2', ['m1'])
  .run(['test', function(test) {
    alert(test);
  }]);

What you DO have access to in the config function is the service-provider for test so you could do

var m2 = angular.module('m2', ['m1'])
  .config(['testProvider', function(test) {
    alert(test);
  }]);

This would typically be if you want to provide some sort of configuration to your test-service that would be specific for the m2 module.

answered Oct 5, 2013 at 10:58

ivarni

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3 Comments

rvboris Over a year ago

Thanks! but ...why? I think there is a difference of service providers, allowing you to access the on configuration step

ivarni Over a year ago

The configuration step of the lifecycle is there in case you want to provide any kind of configuration to a service before it is available for injection. It is briefly mention in the docs (docs.angularjs.org/api/angular.module) with an example of configuring the hash-prefix for the $location service.

ivarni Over a year ago

There's also an example here: gist.github.com/Mithrandir0x/3639232. If you wanted your service to say something like "hello from m2" you'd typically set that bit up in the config step.

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