dataevents.js

  // Allows you to specify events on the data tied to the view in the same way
  // that you can specify dom events:
  //
  // dataEvents: {
  //   instanceName: {
  //     'change:name': 'mothed',
  //     delete: 'otherMethod'
  //    }, ...
  //  }
  registerDataEvents: function(unbind) {
    if (!this.dataEvents) return;
    if (!this.boundMethods)
      this.boundMethods = [];
    for (var modelName in this.dataEvents) {
      var model = this.options[modelName],
          events = this.dataEvents[modelName];
      for (var key in events) {
        var method = this[events[key]];
        if (!method) throw new Error('Event "' + events[key] + '" does not exist');
        method = _.bind(method, this);
        model.bind(key, method);
        this.boundMethods.push({target: model, event: key, method: method});
      }
    }
  },

  unregisterDataEvents: function() {
    if (this.boundMethods) {
      _.each(this.boundMethods, function(binding) {
        binding.target.unbind(binding.event, binding.method);
      });
    }
  },

myview.js

MyView = Backbone.View.extend({
  events: {
    'click [data-state]': 'selectStatus',
    'click .clear-deadline': 'clearDeadline',
    'resize': '_reposition',
    'click': '_onClick',
  },
  dataEvents: {
    task: { 'change': 'onChange' },
    taskStatus: {
      'change:state': 'onChange',
      'change:deadline': 'updateDeadline'
    },
    comments: {
      'add': 'onChange',
      'remove': 'onChange'
    }
  },
  initialize: function() {
    this.registerDataEvents();
  },
  close: function() {
    this.unregisterDataEvents();
    this.remove();
  },
});

usage.js

new MyView({task: t, taskStatus: ts, comments: c});