FormHelper.js

FormHelper = {
	getFormData: function(event, allowEmpty) {
		var allowEmpty = 'boolean' === typeof allowEmpty ? allowEmpty : true;
		var form = event.target ? $(event.target) : event;
		
		var data = {};
		form.find('input[type="hidden"][name], input[type="text"][name], input[name]:checked, textarea[name], select[name]').each(function(i) {
			var keys = $(this).attr('name').replace(/\]/g, '').split('[');
			var marker;
			for (var i = 0; i < keys.length; i++) {
				marker = marker || data;
				var currentKey = (isNaN(keys[i])) ? keys[i] : parseInt(keys[i]);
				var currentKeyIsLast = (i === (keys.length - 1));
				var nextKey = null;
				if (!currentKeyIsLast) {
					nextKey = (isNaN(keys[i+1])) ? keys[i+1] : parseInt(keys[i+1]);
				}
				if (currentKeyIsLast) {
					var value = $(this).val();
					if (!isNaN(parseFloat(value))) value = parseFloat(value);
					
					if (!(marker instanceof Array)) {
						if ($(this).val().length || allowEmpty) {
							marker[currentKey] =  value;							
						}
						else delete marker[currentKey];
					} else marker.push(value);
				} else {
					if (typeof marker[currentKey] === 'undefined') {
						var nextObject = (typeof nextKey === 'string' && nextKey.length) ? {} : [];
						(!(marker instanceof Array)) ? marker[currentKey] = nextObject : marker.push(nextObject);
					}
				}
				marker = marker[currentKey];
			}
		});
		return data;
	}
	, putFormData: function (form, data, trigger) {
		var trigger = 'undefined' !== typeof trigger ? trigger : true
			, form = $(form)
			, fields = []
			, max_depth = 10
			;
		
		var recurse = function(d, field, name, depth) {
			if (depth > max_depth) {
				return;
			}
			if (typeof d == "object") {
				var child = null;
				var field = depth > 1 ? field + '['+ name + ']' : name;

				for (var item in d) {
					child = d[item];
					if ('undefined' !== typeof child.join) {
						for (var i = child.length - 1; i >= 0; i--) {
							fields.push({name: depth > 0 ? field + '['+ item + '][]' : item + '[]', value: child[i]});
						}
					} else if (typeof child == "object") {
						recurse(child, field, item, depth + 1);
					}  else {
						fields.push({name: depth > 1 ? field + '['+ item + ']' : item, value: child});
					}
				}
			} else {
				return d;
			}
		};
		
		recurse(data, '', '', 0); 
		
		for (var i = fields.length - 1; i >= 0; i--) {
			FormHelper._fieldFucker(fields[i].name, fields[i].value, trigger);
		};
		
		
		
		if (trigger) form.trigger('change');
	}
	, _fieldFucker: function (k, v, trigger) {
		var trigger = 'undefined' !== typeof trigger ? trigger : true
			, inputs = $('input[name="' + k + '"], textarea[name="' + k + '"], select[name="' + k + '"]')
			, r
			;
			
		if ('undefined' !== typeof v) {
			if (null !== v) {
				if ('radio' == inputs.attr('type')) r = $(' input[name="' + k + '"][value="' + v + '"]').prop('checked', true);
				else if ('checkbox' == inputs.attr('type')) {
					r = $('input[name="' + k + '"][value="' + ('boolean' == typeof v ? (v ? 1 : 0) : v) + '"]').prop('checked', true);
				}
				else r = inputs.val(v);
			}
			if (trigger) inputs.trigger('change');
			return r;
		}
	}
}