Get HTML attributes to add to el.
function() {
    var attributes = {},
        fetchSummary = {},
        modelUtils = this.app.modelUtils,
        nonAttributeOptions = this.nonAttributeOptions;

    if (this.attributes) {
      _.extend(attributes, _.result(this, 'attributes'));
    }
    if (this.id) {
      attributes.id = _.result(this, "id");
    }
    if (this.className) {
      attributes['class'] = _.result(this, "className");
    }

    // Add `data-view` attribute with view key.
    // For now, view key is same as template.
    attributes['data-view'] = this.name;

    // Add model & collection meta data from options,
    // as well as any non-object option values.
    _.each(this.options, function(value, key) {

        if (!_.isObject(value) && !_.include(nonAttributeOptions, key)) {
          attributes["data-" + key] = value;
        }
    });
    fetchSummary = BaseView.extractFetchSummary(modelUtils, this.options);

    if (!_.isEmpty(fetchSummary)) {
      attributes['data-fetch_summary'] = JSON.stringify(fetchSummary);
    }
    return attributes;
  }