shared/sorting/user-sort.js

   1 'use strict';
   2 var ensurePojo = require('./ensure-pojo');
   3 // @const - higher index in array, higher rank
   4 var RANK = ['contributor', 'admin'];
   5
   6 function compareRank(a, b) {
   7   return RANK.indexOf(a.role) - RANK.indexOf(b.role) || 0;
   8 }
   9
  10 function compareNames(a, b) {
  11   return b.username.toLowerCase().localeCompare(a.username.toLowerCase());
  12 }
  13
  14 // it is worth noticing that we want to sort in a descindencing order, thus the negative results
  15 module.exports = function(a, b) {
  16   // normalizing Backbone.Model to POJO
  17   a = ensurePojo(a);
  18   b = ensurePojo(b);
  19
  20   var rankDifference = compareRank(a, b); // checks if there is rank difference
  21
  22   // attempts to sort by rank
  23   if (rankDifference) {
  24     return -rankDifference;
  25   }
  26
  27   // default sort
  28   return -compareNames(a, b);
  29 };