6     serialize(response) {

     6 

     7         return _(response.models).map((theme) => { return [theme.id, {count: theme.count, label: theme.label}];}).object().value();

     7     serialize: function(response, request) {

     8     	// Remove models with no name

     9     	response.models = response.models.filter(element => element.label);

    10     	// Alphabetical order

    11     	if(request.queryParams.sort === 'alphabetical') {

    12     		response.models.sort(function(a, b) {

    13 				var aLabel = a.label.toUpperCase();

    14 				var bLabel = b.label.toUpperCase();

    15 				if (aLabel < bLabel) return -1;

    16 				if (aLabel > bLabel) return 1;

    17 				return 0;

    18 			});

    19 		// Descending order

    20     	} else if(request.queryParams.sort === 'descending') {

    21     		response.models.sort(function(a, b) {

    22 				return b.count - a.count;

    23 			});

    24     	}

    25     	var index = request.queryParams.page * request.queryParams.limit;

    26     	var slice = response.models.slice(index, index + request.queryParams.limit);

    27         return _(slice).map((theme) => { return [theme.id, {count: theme.count, label: theme.label}];}).object().value();