EmberJS - Initializers

Initializers are used to configure an application as it boots. Initializers contain two types −

• Application Initializers − An application initializer runs as your application boots and configures the dependency injection in your application.

• Application Instance Initializers − An application instance initializers run when an application instance is loaded and configures the initial state of an application.

Application Initializers

Application initializers can be created by using the following command −

ember generate initializer initializer-name

When you create an initializer, it will display the following code format −

export function initialize(/* application */) {
   //application.inject('route', 'foo', 'service:foo');
}

export default {
   //'logger' is an application initializer name
   name: 'logger',
   initialize
}; 

Application Instance Initializers

An instance initializer for an application can be created by using the following command −

ember generate instance-initializer instance-initializer-name

When you run the above command, it will display the the following code structure −

export function initialize(/* appInstance */) {
   // appInstance.inject('route', 'foo', 'service:foo');
}

export default {
   //'logger' is an application instance initializer name
   name: 'logger',
   initialize
};

For more about these two initializers along with an example, see this link.