Собственные фильтры в админке Кнопка ОЧИСТИТЬ - Разработка расширений для Joomla 3.x

<field
                name="days_count"
                type="text"
		default=""
                >
        </field>

<field
                name="discount_id"
                type="modal_discount"
                onchange="this.form.submit();"
				default=""
                >
        </field>

clear: function () {
	var self = this;

	self.getFilterFields().each(function(i, element) {
		$(element).val('');
		self.checkFilter(element);

		if (self.chosenSupport) {
			$(element).trigger('liszt:updated');
		}
	});

	if (self.clearListOptions) {
		self.getListFields().each(function(i, element) {
			$(element).val('');
			self.checkFilter(element);

			if (self.chosenSupport) {
				$(element).trigger('liszt:updated');
			}
		});

		// Special case to limit box to the default config limit
		$('#list_limit').val(self.options.defaultLimit);
		if (self.chosenSupport) {
			$('#list_limit').trigger('liszt:updated');
		}
	}

	self.searchField.val('');
	self.theForm.submit();
},

getFilterFields: function () {
	return this.filterContainer.find('select,input');
},

this.filterContainer = $(this.options.formSelector + ' ' + this.options.filterContainerSelector);
formSelector : '.js-stools-form',
filterContainerSelector : '.js-stools-container-filters'