| var baseSortByOrder = require('../internal/baseSortByOrder'), |
| isArray = require('../lang/isArray'), |
| isIterateeCall = require('../internal/isIterateeCall'); |
| |
| /** |
| * This method is like `_.sortByAll` except that it allows specifying the |
| * sort orders of the iteratees to sort by. If `orders` is unspecified, all |
| * values are sorted in ascending order. Otherwise, a value is sorted in |
| * ascending order if its corresponding order is "asc", and descending if "desc". |
| * |
| * If a property name is provided for an iteratee the created `_.property` |
| * style callback returns the property value of the given element. |
| * |
| * If an object is provided for an iteratee the created `_.matches` style |
| * callback returns `true` for elements that have the properties of the given |
| * object, else `false`. |
| * |
| * @static |
| * @memberOf _ |
| * @category Collection |
| * @param {Array|Object|string} collection The collection to iterate over. |
| * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by. |
| * @param {boolean[]} [orders] The sort orders of `iteratees`. |
| * @param- {Object} [guard] Enables use as a callback for functions like `_.reduce`. |
| * @returns {Array} Returns the new sorted array. |
| * @example |
| * |
| * var users = [ |
| * { 'user': 'fred', 'age': 48 }, |
| * { 'user': 'barney', 'age': 34 }, |
| * { 'user': 'fred', 'age': 42 }, |
| * { 'user': 'barney', 'age': 36 } |
| * ]; |
| * |
| * // sort by `user` in ascending order and by `age` in descending order |
| * _.map(_.sortByOrder(users, ['user', 'age'], ['asc', 'desc']), _.values); |
| * // => [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 42]] |
| */ |
| function sortByOrder(collection, iteratees, orders, guard) { |
| if (collection == null) { |
| return []; |
| } |
| if (guard && isIterateeCall(iteratees, orders, guard)) { |
| orders = undefined; |
| } |
| if (!isArray(iteratees)) { |
| iteratees = iteratees == null ? [] : [iteratees]; |
| } |
| if (!isArray(orders)) { |
| orders = orders == null ? [] : [orders]; |
| } |
| return baseSortByOrder(collection, iteratees, orders); |
| } |
| |
| module.exports = sortByOrder; |