CODEWITHSUNDEEP
javascriptbackbone.js
Eugene Moss
Eugene Moss

Reputation: 35

Cannot get the result of the Backbone model fetch

My model urlRoot:

    urlRoot: function() {
    if (this.id != null ) {
        return 'notes/' + this.id; 
    } else return 'notes';
}

Function:

window.show_note = function (note_id) {
var note = new Memo.Models.Note([], { id: note_id });
note.fetch({
    success: function (collection, note, response) {
        var noteObj = collection.get("0");
        var noteView = new Memo.Views.FullNote( {model: noteObj }, {flag: 0 } );    
        $('.content').html(noteView.render().el);
    }
});}

{ id: note_id } - I post this to server to get note by id I want to do 'set' or 'get' functions on model 'note' after note.fetch in a callback function - success, but only I have is error: 'Uncaught TypeError: note.set is not a function'.

If I do this way: 'var noteObj = collection.get("0");' I get that I need but I still can`t use get or set.

Upvotes: 1

Views: 128

Answers (1)

Jacob
Jacob

Reputation: 1793

You should set urlRoot to:

urlRoot: '/notes'

And backbone will figure out that it needs to add the id to the url. (docs)

Assuming Memo.Models.Note is a model and not a collection, the above snippet should be like this:

window.show_note = function(note_id) {
    var note = new Memo.Models.Note({ id: note_id });

    note.fetch({
        success: function (model, response, options) {
            var noteView = new Memo.Views.FullNote({
                model: model
            }, {flag: 0 });

            $('.content').html(noteView.render().el);
        }
    });
};

Note the argument passed to new Memo.Models.Note. A backbone model constructor takes two arguments: attributes and options (docs) as opposed to a collection, which takes models and options (docs). So you'll want to add the hash with the id property as the first argument.

Also note the function signature of the success callback. For a model the success callback takes three arguments: model, response and options (docs). You'll be interested in the model argument because that is the fetched backbone model. response is the raw response data.

I hope my assumptions are right and this is the answer you are looking for.

Upvotes: 2

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