Question

So far i have the following code, but it doesn’t seem to be working, and I don’t know when the asynchronous fetch is completed:

var item = Backbone.Model.extend({
    defaults: {
        id: 0,
        an_id: 0,
        strval: null,
        th_id: 0,
        text: null
    },
    url: 'page.php',
    options: {
        success: function(data) {
            alert('s: ' + dump(data));
            // the dump function is my way of dumping objects into a string,
            // use console.log if you want, as I have that disabled
        },
        error: function(x, t, e) {
            alert('e: ' + t + ', ' + e);
        }
    }
});

var coll = Backbone.Collection.extend({
    model: item
});

var options = new Options();
Backbone.sync("create", coll, item.options); // 'undefined' is not an object (evaluating c.url) in backbone-min.js

Update

I have modified the original code to what I have now, and the backend can now tell the difference between New, Update, Save and Delete requests.

I still cannot find out how to populate the collection coll.

Answer 1

Backbone.Collection is for keeping multiple items – you seem to be trying to have your Collection “inherit” from your model, which isn’t the right approach.

Collections are ordered sets of models. You can bind “change” events
to be notified when any model in the collection has been modified,
listen for “add” and “remove” events, fetch the collection from the
server, and use a full suite of Underscore.js methods.