drupal/core/modules/quickedit/js/models/BaseModel.js

/**
 * @file
 * A Backbone Model subclass that enforces validation when calling set().
 */

(function (Backbone) {

  'use strict';

  Drupal.quickedit.BaseModel = Backbone.Model.extend(/** @lends Drupal.quickedit.BaseModel# */{

    /**
     * @constructs
     *
     * @augments Backbone.Model
     *
     * @param {object} options
     *   Options for the base model-
     *
     * @return {Drupal.quickedit.BaseModel}
     *   A quickedit base model.
     */
    initialize: function (options) {
      this.__initialized = true;
      return Backbone.Model.prototype.initialize.call(this, options);
    },

    /**
     * Set a value on the model
     *
     * @param {object|string} key
     *   The key to set a value for.
     * @param {*} val
     *   The value to set.
     * @param {object} [options]
     *   Options for the model.
     *
     * @return {*}
     *   The result of `Backbone.Model.prototype.set` with the specified
     *   parameters.
     */
    set: function (key, val, options) {
      if (this.__initialized) {
        // Deal with both the "key", value and {key:value}-style arguments.
        if (typeof key === 'object') {
          key.validate = true;
        }
        else {
          if (!options) {
            options = {};
          }
          options.validate = true;
        }
      }
      return Backbone.Model.prototype.set.call(this, key, val, options);
    }

  });

}(Backbone));