jquery - How can be send additional info on a form with several buttons on Symfony2? -

i started use several buttons on form, taking advantage of isclicked () method , validation groups specified each button. working fine until needed ask additional info @ time user pressed specific button.

the thing is: whenever in jquery on click event of button or submit event of form, somewhow prevents symfony of knowing button wich pressed, says clickedbutton null.

for example, when do: $form->getclickedbutton()->getname() error: "error: call member function getname() on non-object"

even if this:

$("form").submit( function() {     $("button[type='submit']").attr("disabled", true);  }); 

the puzzling thing me have seen here advises of doing kind of thing:

$(this).append('<button />').attr('type', 'hidden').attr('name', "something").attr('value', "something"); 

on submit event, when it, dont seem find information on request in controller.

how can achieve sending additional info @ same time clicked button ?

million thanks

the clicked button determined using submitted data, if button name presented in post or get button marked clicked = true.

now, in javascript snippet disabling button(s) , disabled fields/inputs won't presented in submitted data, therefore, sf2 not able determine button has been clicked.

as else suggested use hidden field, add form first, , fill information using javascript required.