40 lines
1.4 KiB
JavaScript
40 lines
1.4 KiB
JavaScript
(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 ids
|
|
maxLength - maximum length of the URLify'd string
|
|
*/
|
|
return this.each(function() {
|
|
var prepopulatedField = $(this);
|
|
|
|
var populate = function () {
|
|
// Bail if the field's value has been changed by the user
|
|
if (prepopulatedField.data('_changed')) {
|
|
return;
|
|
}
|
|
|
|
var values = [];
|
|
$.each(dependencies, function(i, field) {
|
|
field = $(field);
|
|
if (field.val().length > 0) {
|
|
values.push(field.val());
|
|
}
|
|
});
|
|
prepopulatedField.val(URLify(values.join(' '), maxLength));
|
|
};
|
|
|
|
prepopulatedField.data('_changed', false);
|
|
prepopulatedField.change(function() {
|
|
prepopulatedField.data('_changed', true);
|
|
});
|
|
|
|
if (!prepopulatedField.val()) {
|
|
$(dependencies.join(',')).keyup(populate).change(populate).focus(populate);
|
|
}
|
|
});
|
|
};
|
|
})(django.jQuery);
|