How can data be transferred between controllers in Angular 2 without using URL parameters or the $state.go() function?

I've encountered an issue where I need to pass a parameter from one controller to another without it being visible in the URL. I attempted to do so with the following code:

this.router.navigate(['/collections/'+this.name], {id: this.id});

However, I'm unable to access the parameter on the other controller. I also tried the following approach:

    {
      path: 'collection/:city',
      component: Component,
      data : {id : null}
    }

But my question is, how can I dynamically pass the id since it's not available in the routing file? Is there a way to pass it from the component?

In AngularJS 1.5, we utilized the params hash to conceal the id from the URL.

$state.go('collection', {id: 10})

 state('collection', {
    url : '/collection',
    params : {
        id : null,
    },
    templateUrl : templatesDir + 'collection.html',
    controller : 'collectionController',
})

My question now is whether there is a similar method in AngularJS 2.

Thank you!

Answer №1

To allow multiple components to share the same object, a singleton object must be created.

  • One approach is to use a Service and @injector in Angular2. @injector
  • Another method is to create static members within a class and access them from another class by referencing the class name.

These are the two main ways to achieve this shared object functionality.

Answer №2

If you need to pass data between controllers, one effective way is to utilize a factory or service. By storing the data in a factory, you can access it as a singleton object (but keep in mind this only lasts until a refresh occurs).

The recommended approach for storing data in a factory is to make use of getter and setter objects.

For more methods on sharing data between Angular components, check out the following resource:

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