Izvadit Ajax kļūdu

[vostro]

Sveiki, gribēju uzzināt kā pareizi izvadīt kļūdu AJAX formā.

JS

   	$('#formAddComents').submit(function(){

   	var send = $(this).serialize();
   	$.ajax({
       	type: 'POST',
       	url: '/news/add',
       	data: send,
       	dataType: "json",
       	success: function(msg){
           	$('.commentsList').append("<div class='commentsImage'><div><img src='/users_images/"+msg.user_image+"' border='1' width='100' height='90' /></div></div><div class='commentsText'>"+msg.text+"</div><div class='commentsUsersData'><span style='margin-right: 5px; margin-top: 5px; margin-left: 5px; font-size: 12px;'><a href='/users/"+msg.user_id+"'>"+msg.author+"</a></span> <span style='float: right; margin-right: 5px; margin-top: 5px; font-size: 12px; color: gray; '>"+msg.date+"</span></div><br />");
                	$(":input").val('');
        	}

       	});

       	return false;
   	});

PHP

   $page_id = $this->input->post('page_id');

       	$user_id = $this->input->post('user_id');

       	$user_images = $this->input->post('user_image');
       	$author = $this->input->post('name');
       	$text = $this->input->post('textComments');
       	$date = date("d.m.y H:i:s");
       	$data = array(
           	'page_id' => $page_id ,
           	'user_id' => $user_id ,
           	'user_image' => $user_images ,
           	'author' => $author ,
           	'text' => $text ,
           	'date' => $date
                   	);
       	$this->db->insert('comments', $data);
       	$c = json_encode($data);
       	echo $c;

Man vajag tikai pārbaudīt vai lauks nebija tukšs!!! Interesē, kā izvadīt no servera puses ? Un nodot json

[briedis]

php pusē:

 

exit(json_encode(array('error' => 'Kāds lauks nebija aizpildīts'));

 

js pusē:

 

success: function(msg){


if(msg.error){
  alert(msg.error);
  return;
}
//Tālāk daram vajadzīgo ar msg, ja nav kļūdu

[vostro]

Paldies briedis

 

Pietrūkst vienas iekavas :)

izlabots

exit(json_encode(array('error' => 'Kāds lauks nebija aizpildīts')));

Edited November 19, 2011 by vostro