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114 lines
4.3 KiB
114 lines
4.3 KiB
(function($) {
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window.NestedFormEvents = function() {
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this.addFields = $.proxy(this.addFields, this);
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this.removeFields = $.proxy(this.removeFields, this);
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};
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NestedFormEvents.prototype = {
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addFields: function(e) {
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// Setup
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var link = e.currentTarget;
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var assoc = $(link).data('association'); // Name of child
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var blueprint = $('#' + $(link).data('blueprint-id'));
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var content = blueprint.data('blueprint'); // Fields template
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// Make the context correct by replacing <parents> with the generated ID
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// of each of the parent objects
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var context = ($(link).closest('.fields').closestChild('input, textarea, select').eq(0).attr('name') || '').replace(new RegExp('\[[a-z_]+\]$'), '');
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// context will be something like this for a brand new form:
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// project[tasks_attributes][1255929127459][assignments_attributes][1255929128105]
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// or for an edit form:
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// project[tasks_attributes][0][assignments_attributes][1]
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if (context) {
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var parentNames = context.match(/[a-z_]+_attributes(?=\]\[(new_)?\d+\])/g) || [];
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var parentIds = context.match(/[0-9]+/g) || [];
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for(var i = 0; i < parentNames.length; i++) {
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if(parentIds[i]) {
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content = content.replace(
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new RegExp('(_' + parentNames[i] + ')_.+?_', 'g'),
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'$1_' + parentIds[i] + '_');
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content = content.replace(
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new RegExp('(\\[' + parentNames[i] + '\\])\\[.+?\\]', 'g'),
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'$1[' + parentIds[i] + ']');
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}
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}
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}
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// Make a unique ID for the new child
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var regexp = new RegExp('new_' + assoc, 'g');
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var new_id = this.newId();
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content = $.trim(content.replace(regexp, new_id));
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var field = this.insertFields(content, assoc, link);
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// bubble up event upto document (through form)
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field
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.trigger({ type: 'nested:fieldAdded', field: field })
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.trigger({ type: 'nested:fieldAdded:' + assoc, field: field });
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return false;
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},
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newId: function() {
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return new Date().getTime();
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},
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insertFields: function(content, assoc, link) {
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var target = $(link).data('target');
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if (target) {
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return $(content).appendTo($(target));
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} else {
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return $(content).insertBefore(link);
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}
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},
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removeFields: function(e) {
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var $link = $(e.currentTarget),
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assoc = $link.data('association'); // Name of child to be removed
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var hiddenField = $link.prev('input[type=hidden]');
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hiddenField.val('1');
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var field = $link.closest('.fields');
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field.hide();
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field
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.trigger({ type: 'nested:fieldRemoved', field: field })
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.trigger({ type: 'nested:fieldRemoved:' + assoc, field: field });
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return false;
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}
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};
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window.nestedFormEvents = new NestedFormEvents();
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$(document)
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.delegate('form a.add_nested_fields', 'click', nestedFormEvents.addFields)
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.delegate('form a.remove_nested_fields', 'click', nestedFormEvents.removeFields);
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})(jQuery);
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// http://plugins.jquery.com/project/closestChild
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/*
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* Copyright 2011, Tobias Lindig
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*
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* Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
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* and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
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*
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*/
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(function($) {
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$.fn.closestChild = function(selector) {
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// breadth first search for the first matched node
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if (selector && selector != '') {
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var queue = [];
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queue.push(this);
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while(queue.length > 0) {
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var node = queue.shift();
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var children = node.children();
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for(var i = 0; i < children.length; ++i) {
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var child = $(children[i]);
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if (child.is(selector)) {
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return child; //well, we found one
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}
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queue.push(child);
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}
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}
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}
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return $();//nothing found
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};
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})(jQuery);
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