Plugin básico para enviar formularios via ajax

jquery_ajaxify.js

(function() {
$.fn.ajaxify = function(options) {
    $(this).submit(function(e) {
        var form = $(this);
        $.ajax({
            type : form.attr('method'),
            url : form.attr('action'),
            data : form.serialize(),
            error : options.error,
            success : options.success,
        });
 
        return false;
    });
}
})();
 
//use
$('form').ajaxify(
    {success: success_method_name, 
    error: error_method_name});