vitamin/lib/relations/query.js

Data Mapper library for Node.js applications

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

var _underscore = require('underscore');

var _underscore2 = _interopRequireDefault(_underscore);

var _query = require('../query');

var _query2 = _interopRequireDefault(_query);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

// exports
var _class = function (_Query) {
  _inherits(_class, _Query);

  /**
   * RelationQuery constructor
   * 
   * @param {Query} query
   * @constructor
   */
  function _class(query) {
    _classCallCheck(this, _class);

    var _this = _possibleConstructorReturn(this, (_class.__proto__ || Object.getPrototypeOf(_class)).call(this, query.toBase()));

    _this.setModel(query.model);
    _this.from(_this.model.tableName);
    return _this;
  }

  /**
   * Set relation mapper of this query
   * 
   * @param {Relation} relation
   * @return this query
   */


  _createClass(_class, [{
    key: 'setRelation',
    value: function setRelation(relation) {
      this.relation = relation;
      return this;
    }

    /**
     * Get the first record matching the attributes or create it
     * 
     * @param {Object} attrs
     * @param {Array} returning
     * @return promise
     */

  }, {
    key: 'firstOrCreate',
    value: function firstOrCreate(attrs) {
      var _this2 = this;

      var returning = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ['*'];

      return this.firstOrNew(attrs).then(function (model) {
        if (_underscore2.default.isFunction(_this2.relation.create)) {
          return _this2.relation.create(attrs, returning);
        }

        return model.save(returning);
      });
    }

    /**
     * Fetch many records from the database
     * 
     * @param {Array} columns
     * @return promise
     */

  }, {
    key: 'fetch',
    value: function fetch(columns) {
      var _this3 = this;

      return _get(_class.prototype.__proto__ || Object.getPrototypeOf(_class.prototype), 'fetch', this).apply(this, arguments).tap(function (res) {
        return _this3._hydratePivotAttributes(res);
      });
    }

    /**
     * Hydrate pivot attributes
     * 
     * @param {Collection} collection
     * @private
     */

  }, {
    key: '_hydratePivotAttributes',
    value: function _hydratePivotAttributes(collection) {
      var _this4 = this;

      if (_underscore2.default.isEmpty(this.relation.pivotColumns)) return;

      collection.forEach(function (model) {
        var data = {};

        // unset the pivot attributes from the target model
        _underscore2.default.each(model.getData(), function (value, attr) {
          if (attr.indexOf('pivot_') === 0) {
            data[attr.substring(6)] = value;
            model.unset(attr, true);
          }
        });

        // prevent adding an empty `pivot` model
        if (_underscore2.default.isEmpty(data)) return;

        // set the pivot attributes as a pivot model
        model.setRelated('pivot', _this4.relation.pivot.newInstance(data, true));
      });
    }
  }]);

  return _class;
}(_query2.default);

exports.default = _class;