Activity Backbone Model

activity.js

var Activity = Backbone.Model.extend({
    url : "/activities",
    // From activity-streams-mongoose/lib/activityMongoose.js
    defaults: {
        verb: 'post',
        object: null, //ActivityObject
        actor: null, //ActivityObject
        url: '',
        title: '',
        content: '',
        icon: null, // MediaLinkHash
        target: null, //ActivityObject
        published: Date.now,
        updated: Date.now,
        inReplyTo: null, //Activity
        provider: null, //ActivityObject
        generator: null, //ActivityObject
        streams: ['firehose'],
        likes: {},
        likes_count: 0,
        comments: [],
        comments_count: 0,
        userFriendlyDate: 'No idea when'
    },
    validate: function(attrs) {

    if (! attrs.object) {
        return "Object is missing"
    }
    if (!attrs.object.title) {
      return "Title is missing";
    }
  }
});