Question

I’m using Backbone and Parse to build a survey website. I imitated the Todo list example to add a question to the page. As in the todo list example, I have “createOnEnter” and “addOne”. Getting the id is important to me because I need to set the id of the question the same as its id in Parse.

    addOne: function(question) {
    alert(question.get("content"));
    alert(question.id);
    var view = new QuestionView({model: question});
    this.$("#questions").append(view.render().el);
},

    createOnEnter: function(e) {
    if (e.keyCode != 13) {
        return;
    }

    this.survey.create({
        content: $("#new-question").val(),
        type: $("#choose-type").val(),
        order: this.survey.nextOrder(),
        user: Parse.User.current(),
        ACL: new Parse.ACL(Parse.User.current())
    }, {wait: true});
        $("#new-question").val('');
    }

So alert(question.get(“content”)) will indeed gave me the expected content but alert(question.id) shows undefined. However I believe each entry saved to Parse will get a unique id so I couldn’t understand why question.id is undefined. Even worse, alert(question.get(“cid”)) is also undefined…..This is really confusing to me.
Thanks a lot!!!

Answer 1

ids are given by the server (when you fetch and the server return an id fields). It could also get added if when you create your model you manually add an id field – but the point is that this isn’t done automatically. id is the unique identifier of a resource on the server.

As you’re creating question on the frontend, you’ll need to use the unique id Backbone create who’s called cid . http://backbonejs.org/#Model-cid