/*global URLify*/ 'use strict'; { const $ = django.jQuery; $.fn.prepopulate = function(dependencies, maxLength, allowUnicode) { /* Depends on urlify.js Populates a selected field with the values of the dependent fields, URLifies and shortens the string. dependencies - array of dependent fields ids maxLength - maximum length of the URLify'd string allowUnicode - Unicode support of the URLify'd string */ return this.each(function() { const prepopulatedField = $(this); const populate = function() { // Bail if the field's value has been changed by the user if (prepopulatedField.data('_changed')) { return; } const values = []; $.each(dependencies, function(i, field) { field = $(field); if (field.val().length > 0) { values.push(field.val()); } }); prepopulatedField.val(URLify(values.join(' '), maxLength, allowUnicode)); }; prepopulatedField.data('_changed', false); prepopulatedField.on('change', function() { prepopulatedField.data('_changed', true); }); if (!prepopulatedField.val()) { $(dependencies.join(',')).on('keyup change focus', populate); } }); }; }