Question

Are these two steps mandatory to delete a Model?

var model = collection.get(id);
model.destroy();
collection.remove(model);

Isn’t there a way to destroy a model when it is removed from its collection?

Answer 1

Model.bind("remove", function() {
  this.destroy();
});
...
var model = new Model();
...
collection.remove(model);

Removing a model from a collection triggers the "remove" event.

So if you want to, you can get models to bind to them and destroy themselves.