| (function($) { |
| $.fn.prepopulate = function(dependencies, maxLength) { |
| /* |
| 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 id's |
| maxLength - maximum length of the URLify'd string |
| */ |
| return this.each(function() { |
| var field = $(this); |
| |
| field.data('_changed', false); |
| field.change(function() { |
| field.data('_changed', true); |
| }); |
| |
| var populate = function () { |
| // Bail if the fields value has changed |
| if (field.data('_changed') == true) return; |
| |
| var values = []; |
| $.each(dependencies, function(i, field) { |
| if ($(field).val().length > 0) { |
| values.push($(field).val()); |
| } |
| }) |
| field.val(URLify(values.join(' '), maxLength)); |
| }; |
| |
| $(dependencies.join(',')).keyup(populate).change(populate).focus(populate); |
| }); |
| }; |
| })(django.jQuery); |