CodeIgniter Json Ajax Database insertion is not working - php

Question

I have tried to solve this issue, here i am inserting dynamic inputbox box values into database including their title. But not working...
Inputbox dynamic generation: (This works well)
$('#myTable tbody').append("<tr><td>"+rno+"</td><td>"
+item.stdname+"</td><td><input type='text' name='stdmark[]' class='mark' title='"+item.stdid+"' style='padding: 0px; width: 50px;'/></td></tr>");
Ajax to Send these values into controller:
$('#marklist').submit(function(e){
//var mark = 10;
jsonObj = [];
$("input[class=mark]").each(function() {
var id = $(this).attr("title");
var subjectmark = $(this).val();
item = {}
item ["stdid"] = id;
item ["mark"] = subjectmark;
jsonObj.push(item);
});
$.ajax({
type: "POST",
url: "<?php echo base_url(); ?>office/addmark",
data: {senddata :JSON.stringify(jsonObj)},
dataType: "json",
processData:false,
contentType:false,
cache:false,
async:false,
success:
function(retrived_data){
}
});
e.preventDefault();
});
Controller:
public function addmark()
{
$marks = json_decode($this->input->post('senddata'), true);
$this->load->Model('wtcmodel');
foreach($marks as $row)
{
$data = array(
'stdid' => $row->stdid,
'mark' => $row->mark
);
$this->wtcmodel->adddata($data);
}
}
Model:
public function adddata($data)
{
$this->load->database();
$this->db->insert('table_info',$data);
}

Answer 1

you can post input data using this method.
var stdid = $('input[name="stdmark[]"]').map(function(){
return $(this).attr('title');
}).get();
var marks = $('input[name="stdmark[]"]').map(function(){
return this.value;
}).get();
$.ajax({
type: 'POST',
url: 'users.php',
data: {
'stdid[]': stdid,
'marks[]':marks
},
success: function() {
}
});
You can access stdid[] and marks[] variable as array directly in controller.
Controller
public function addmark()
{
$stdid = $this->input->post('stdid');
$marks = $this->input->post('marks');
$this->load->Model('wtcmodel');
foreach($stdid as $key => $row)
{
$data = array(
'stdid' => $stdid,
'mark' => $marks[$key]
);
$this->wtcmodel->adddata($data);
}
}

Answer 2

why did't use Jquery serialize function : http://api.jquery.com/serialize/
$('#marklist').submit(function(e){
e.preventDefault();
//var mark = 10;
$.ajax({
type: "POST",
url: "<?php echo base_url(); ?>office/addmark",
data: $(this).serialize(),
dataType: "json",
processData:false,
contentType:false,
cache:false,
async:false,
success:
function(retrived_data){}
});
});
or you can use param : http://api.jquery.com/jquery.param/