Ember js 1.12.0 - Failed to create instance

Question

I'm trying to inject my config file into all of my routes, controllers, and components instead of calling import config from '../config/environment' in every file. I get the following error however:

Uncaught Error: Failed to create an instance of 'config:main'. Most likely an improperly defined class or an invalid module export.

Below is my code as its rendered via coffeescript.

// app/initializers/config.js

define('app/initializers/config', ['exports', 'app/config/environment'], function (exports, Config) {

'use strict';

var ConfigInitializer, initialize;

initialize = function (container, app) {
  var config;
  config = {
    config: Config['default']
  };
  app.register('config:main', config);
  app.inject('route', 'config', 'config:main');
  app.inject('controller', 'config', 'config:main');
  app.inject('component', 'config', 'config:main');
};

ConfigInitializer = {
  name: 'config',
  initialize: initialize
};

exports['default'] = ConfigInitializer;

exports.initialize = initialize;

What am I missing?

I've stepped through everything using breakpoints and my path to my environment.js file is correct. So I know its not that. I think I'm missing something fundamental about dependency injection.

Artur Smirnov · Accepted Answer · 2015-09-09 11:42:58Z

3

Everything looks fine in your code, except one thing. By default Ember expects to register Factories but not instances. So once the property gets injected, it tries to get an instance from registered factory. But in your case it's not a factory, it's an instance (object) itself. So the only thing you have to do is to say Ember to use registered object as is, without trying to get an instance. To achive this, just add instantiate: false to register options:

app.register('config:main', config, {instantiate: false});

edited Sep 9, 2015 at 11:42

answered Sep 9, 2015 at 9:57

Artur Smirnov

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Comments

cefigueiredo · Accepted Answer · 2015-09-08 22:03:34Z

1

It is complaining that can't instantiante a new config object when initializing. Try changing your config object into a Ember.Service

import Ember from 'ember'

initialize = function(container, app) { 
  var config = Ember.Service.extend({
    config: Config['default']
  }
  ...
}

answered Sep 8, 2015 at 22:03

cefigueiredo

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1 Comment

JDillon522 Over a year ago

I tried that and got the following error: > Uncaught TypeError: Attempting to register an unknown factory: config:main I did fix it however just by adding { instantiate: false } to the register call. I still dont know the "why" behind it all though.

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