58 lines
1.5 KiB
JavaScript
58 lines
1.5 KiB
JavaScript
import { Template } from 'meteor/templating';
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import { _ } from 'meteor/underscore';
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/**
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* Global Blaze UI helper to sort array elements
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* by an array element's property (property) or deep object property (property.childProperty)
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* Sorts ascending as default
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*/
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Template.registerHelper('sort', (array, sortBy, sortType) => {
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if (!sortBy) {
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return array;
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}
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// To keep the order for the same values of the field which is used to sort:
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// 1. Group the array by the field
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// 2. Sort the grouped array
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// 3. Ungroup the sorted array
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const groupedArray = _.groupBy(array, (element) => {
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if (sortBy) {
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var groupingElement = getKeyValue(element, sortBy);
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if (groupingElement) {
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return groupingElement;
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}
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}
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return element;
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});
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const sortedArray = _.sortBy(groupedArray, (element) => {
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if (sortBy) {
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var sortingElement = getKeyValue(element[0], sortBy);
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if (sortingElement) {
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return sortingElement;
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}
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}
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return element;
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});
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if (sortType === 'desc') {
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return _.flatten(sortedArray.reverse(), true);
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}
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return _.flatten(sortedArray, true);
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});
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function getKeyValue(object, keyPath) {
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keyPath = keyPath.split('.');
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for (var i = 0; i < keyPath.length; i++) {
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if (object && _.has(object, keyPath[i])) {
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object = object[keyPath[i]];
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}
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else {
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return undefined;
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}
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}
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return object;
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}
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