AJAX form plugin for jQuery Copyright (c) 2009 Jan Marek

nette-ajax-form.js

/**
 * AJAX form plugin for jQuery
 *
 * @copyright  Copyright (c) 2009 Jan Marek
 * @license    MIT
 * @link       http://nettephp.com/cs/extras/ajax-form
 * @version    0.1
 */

jQuery.fn.extend({
  ajaxSubmit: function (callback,e) {
		var form;
		var sendValues = {};

		// submit button
		if (this.is(":submit")) {
			form = this.parents("form");
			sendValues[this.attr("name")] = this.val() || "";

		// form
		} else if (this.is("form")) {
			form = this;

		// invalid element, do nothing
		} else {
			return null;
		}

        e.preventDefault();


		// validation
		if (form.get(0).onsubmit && form.get(0).onsubmit() === false) {
            e.stopImmediatePropagation();
            return null;
        }
            
        if(form.data("ajaxSubmitCalled")==true) return null;

        form.data("ajaxSubmitCalled",true);

        // Tím, že zaregistruji ajaxové odeslání až teď, tak se provede jako poslední. (až po všem)
        form.one("submit",function(){
            // get values
            var values = form.serializeArray();

            for (var i = 0; i < values.length; i++) {
                    var name = values[i].name;

                    // multi
                    if (name in sendValues) {
                            var val = sendValues[name];

                            if (!(val instanceof Array)) {
                                    val = [val];
                            }

                            val.push(values[i].value);
                            sendValues[name] = val;
                    } else {
                            sendValues[name] = values[i].value;
                    }
            }

            // send ajax request
            var ajaxOptions = {
                    url: form.attr("action"),
                    data: sendValues,
                    type: form.attr("method") || "get"
            };

            ajaxOptions.complete = function(){
                form.data("ajaxSubmitCalled",false);
            }

            if (callback) {
                ajaxOptions.success = callback;
            }
            
            return jQuery.ajax(ajaxOptions);
        });

        e.stopImmediatePropagation();
        form.submit();
        return null;
    },

    __submit: function(e) {
        $(this).ajaxSubmit(null,e);
    },

    enableAjaxSubmit: function() {
        this.bind("submit",this.__submit);
        $(":submit",this).bind("click",this.__submit);
    },
    disableAjaxSubmit: function() {
        this.unbind("submit",this.__submit);
        $(":submit",this).unbind("click",this.__submit);
    }
});


// po načtení stránky
$(function () {
        // odeslání na formulářích
        $("form.ajax").livequery(function(){
		$(this).enableAjaxSubmit();
	});
});