How to mass assign all attributes of a Backbone model?

Question

I would like to update the `User` model whenever `signIn` was successful. It includes the `id` assign by the backend which has not been present in the model before. ``` MyApp.module("User", function(User, App, Backbone, Marionette, $, _) { User.Controller = Backbone.Marionette.Controller.extend({ initialize: function() { this.model = new MyApp.User.Model(); }, signIn: function(credentials) { var signInData = { user: credentials }; var self = this; App.session.signIn(signInData, { success: function(model, response, options) { self.updateUserModel(model); }, error: function(model, xhr, options) {} }); }, updateUserModel: function(model) { // TODO Update all attributes, including new onces e.g. id. } }); }); ``` How would you update all attribtues at once? I know that I manually can `set` every single attribute but this seems to be wrong since the list of attributes may change over time. Generally, I would expect such an `update(model)` method in the `User` model. When I use Backbone's `…

Accepted Answer

- You are moving around a `Backbone.Model`,

- `Model.set` accepts a hash of attributes,

- you can convert a `Backbone.Model` to a hash of attributes with `Model.toJSON`

You could write your callback as

```
success: function(model, response, options) {
    self.model.set(model.toJSON());
}
```

How to mass assign all attributes of a Backbone model?

Solution

Problem