Backbone.js on save() is posting to create instead of Update and with JS instead of JSON?

Question

I'm trying to use a Backbone.js model to keep track of what guides a user has seen. I would like to store the value in User.guides which is a serialized field in rails.

var Model = Backbone.Model.extend({
    urlRoot : '/users',
    defaults : {
        user : {
            guides : {
                step1 : false,
                step2 : false           
            }           
        }
    }

});

That's what happens on load. Later on when I try to make an update:

me.model.set({
    user : {
        room_wizard : {
            project_completed : true
        }           
    }
});


me.model.save();

The problem here is Rails is erroring for the following reasons:

Backbone.js is posting to create as JS when it should be Update as JSON? Why?

Ideas? Am I handling the above incorrectly? I'm new to backbone.js Thanks

The issue might be that with rails + devise, to update current user's user model, you post to /users instead of /users/:id --- Is there a way to handle this ? — AnApprentice

fguillen fguillen · Accepted Answer · 2012-04-23T08:28:41

The Backbone's rule of thumb for choosing between POST or PUT to the server is if the Model has an id or has not.

If Model has an id Backbone will use the verb PUT.
If Model has not an id Backbone will use the verb POST.

Backbone.js on save() is posting to create instead of Update and with JS instead of JSON?

1 Answers