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up vote 0 down vote favorite

i'm trying to send a form inputs as array to a php script 

function submit_form(){
    var arr  =  [];
    var key, val ;
    $('#form input').each(function(){

        key = $(this).attr('id');
        val = $(this).val();
        arr[key] = val;

    })
    alert(arr['username']); // check to see if array is not empty

    var jsondata =  JSON.stringify(arr); 

    $.post(base_url+'profile/edit_profile/<?php echo $profile_username; ?>' , {data : jsondata }, function(){
    })
}

on the php script 

$data =  json_decode($_post['data']);
var_dump($data);
exit;

and here is the result 

array (size=0)
  empty
share|improve this question
    
Have you tried turning {data: ...} into {"data": ...}? –  Waleed Khan Jul 21 '12 at 19:10
    
@arxanas, sounds irrelevant –  Alexander Jul 21 '12 at 19:14

2 Answers 2

up vote 3 down vote accepted

You're using an Array when you should be using an Object.

var obj = {};
var key, val ;
$('#form input').each(function(){

    key = $(this).attr('id');
    val = $(this).val();
    obj[key] = val;

});

JSON methods will ignore non-numeric properties of Arrays.

Although instead of using id attributes, use name, and then use .serialize().

var data = $('#form input').serialize();
share|improve this answer
    
+1 for suggesting .serialize(). –  hakre Jul 21 '12 at 19:13
    
thanx , i thought using serialize whould give me a string of "k&v" pears and it used for GET method ? –  max Jul 21 '12 at 19:19
    
@max: If you want an object structure, you can use serializeArray(), which will give you an array of objects. –  squint Jul 21 '12 at 19:31
up vote 0 down vote

This needs basic debugging first. Before you decode the data, dump it so you do ensure that the data is correct: 

$data =  $this->input->post('data');
var_dump($data);
$array = json_decode($data);
var_dump($array);
exit;

Lessons to learn:

  • Do one step after the other. The more stupid the better.
  • Before and after each step, verify the data.
share|improve this answer

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