codeigniter update quantity not working - codeigniter

Question

quantity not update only If I add an item with the exact same options more than once to my cart, it replaces instead of increasing the qty of the existing item
This is cart view code
`<table class="table table-bordered table-hover">
<thead ><!-- Table head -->
<tr>
<th class="active">Sl</th>
<th class="active col-sm-4">Product</th>
<th class="active col-sm-2">Real Price</th>
<th class="active ">Qty</th>
<th class="active ">Disc Price</th>
<th class="active">Total</th>
<th class="active">Action</th>
</tr>
</thead><!-- / Table head -->
<tbody><!-- / Table body -->
<?php $cart = $this->cart->contents() ;
?>
<?php $counter =1 ; ?>
<?php if (!empty($cart)): foreach ($cart as $item) : ?>
<tr class="custom-tr">
<td class="vertical-td">
<?php echo $counter ?>
</td>
<td class="vertical-td"><?php echo $item['name'] ?></td>
<td class="vertical-td"><?php echo $item['pkprice'] ?></td>
<td class="vertical-td">
<input type="text" name="qty" style="width: 50px" value="<?php echo $item['qty'] ?>" onblur ="order(this);" id="<?php echo 'qty'.$item['rowid'] ?>" class="form-control">
</td>
<td>
<div class="input-group">
<span class="input-group-addon">
<input type="checkbox" id="<?php echo 'opt'.$item['rowid'] ?>" onclick="return price_checkbox(this)" name="custom_price"
<?php echo $item['price_option'] == 'custom_price' ? 'checked':'' ?>
data-placement="top" data-toggle="tooltip" data-original-title="Custom Price">
</span>
<input type="text" name="price" value="<?php echo $item['price'] ?>" onblur ="order(this);" id="<?php echo 'pri'.$item['rowid'] ?>" class="form-control"
<?php echo $item['price_option'] == 'custom_price' ? '':'disabled' ?> >
</div>
<input type="hidden" name="product_code" value="<?php echo $item['id'] ?>" id="<?php echo 'code'.$item['rowid'] ?>">
</td>
<td class="vertical-td"><?php echo number_format($item['subtotal'], 2, '.', ',') ?></td>
<td class="vertical-td">
<?php echo btn_delete('admin/order/delete_cart_item/' . $item['rowid']); ?>
</td>
</tr>
<?php
$counter++;
endforeach;
?><!--get all sub category if not this empty-->
<?php else : ?> <!--get error message if this empty-->
<td colspan="6">
<strong>There is no record for display</strong>
</td><!--/ get error message if this empty-->
<?php endif; ?>
</tbody><!-- / Table body -->
`
This is Controller Code
public function add_cart_item_by_barcode(){
$product_code = $this->input->post('barcode', true);
$result = $this->order_model->validate_add_cart_item($product_code);
if($result){
$price = $this->check_product_rate($result->product_id, $qty=1);
//product tax check
$tax = $this->product_tax_calculate($result->tax_id, $qty=1, $price);
$data = array(
'id' => $result->product_code,
'qty' => 1,
'price' => $price,
'buying_price' => $result->buying_price,
'name' => $result->product_name,
'pkprice' => $result->p_price,
'tax' => $tax,
'price_option' => 'general'
);
$this->cart->update($data);
$this->session->set_flashdata('cart_msg', 'add');
}
redirect('admin/order/new_order/'.$flag ='add');
}
public function check_product_rate($product_id=null, $qty=null)
{
//tier Price check
$tire_price = $this->order_model->get_tire_price($product_id, $qty);
if($tire_price)
{
return $price = $tire_price->tier_price ;
}
//special offer check
$this->tbl_special_offer('special_offer_id');
$offer_price = $this->global_model->get_by(array("product_id"=>$product_id), true);
if(!empty($offer_price)) {
$today = strtotime(date('Y-m-d'));
$start_date = strtotime($offer_price->start_date);
$end_date = strtotime($offer_price->end_date);
if (($today >= $start_date) && ($today <= $end_date)) {
return $price = $offer_price->offer_price;
}
}
//return regular rate
$this->tbl_product_price('product_price_id');
$general_price = $this->global_model->get_by(array("product_id"=>$product_id), true);
return $product_price = $general_price->selling_price;
}
/*** Product tax calculation ***/
public function product_tax_calculate($tax_id, $qty ,$price)
{
$this->tbl_tax('tax_id');
$tax = $this->global_model->get_by(array('tax_id'=>$tax_id), true);
//1 = tax in %
//2 = Fixed tax Rate
if($tax){
if($tax->tax_type == 1)
{
$subtotal = $price * $qty;
$product_tax = $tax->tax_rate * ($subtotal / 100);
//return $result = round($product_tax, 2);
return $result = $product_tax;
}else
{
//$product_tax = $tax->tax_rate * $qty;
$product_tax = $tax->tax_rate * $qty;
return $result = $product_tax;
}
}
}
/*** Update Product Cart ***/
public function update_cart_item()
{
$rowid = $this->input->post('rowid');
$qty = $this->input->post('qty');
$product_price = $this->input->post('price');
$product_code = $this->input->post('product_code');
$custom_price = $this->input->post('custom_price');
if($qty !=0 )
{
//tbl product
$this->tbl_product('product_id');
$result = $this->global_model->get_by(array('product_code'=> $product_code ), true);
//product Inventory Check
$this->tbl_inventory('inventory_id');
$product_inventory = $this->global_model->get_by(array('product_id'=> $result->product_id ), true);
if($qty > $product_inventory->product_quantity)
{
$type = 'error';
$message = 'Sorry! This product has not enough stock.';
set_message($type, $message);
echo 'false';
return;
}
if($custom_price == "on")
{
$price = $product_price;
$price_option = 'custom_price';
}
else
{
//product price check
$price = $this->check_product_rate($result->product_id, $qty);
$price_option = 'general';
}
//product tax check
$tax = $this->product_tax_calculate($result->tax_id, $qty, $price);
$data = array(
'rowid' => $rowid,
'qty' => $qty,
'price' => $price,
'tax' => $tax,
'price_option' => $price_option
);
}else
{
$data = array(
'rowid' => $rowid,
'qty' => $qty,
);
}
$this->cart->update($data);
if($this->input->post('ajax') != '1'){
redirect('admin/order/new_order'); // If javascript is not enabled, reload the page with new data
}else{
echo 'true'; // If javascript is enabled, return true, so the cart gets updated
}
}
/*** Show cart ***/
function show_cart(){
$this->load->view('admin/order/cart/cart');
}
/*** cart Summery ***/
function show_cart_summary(){
$this->load->view('admin/order/cart/cart_summary');
}
/*** Delete Cart Item ***/
public function delete_cart_item($id)
{
$data = array(
'rowid' => $id,
'qty' => 0,
);
$this->cart->update($data);
$this->session->set_flashdata('cart_msg', 'delete');
redirect('admin/order/new_order/'.$flag ='delete');
}
This is working fine when add product or change its quantity all perfect working but If I add an item with the exact same options more than once to my cart, it replaces instead of increasing the qty of the existing item

Answer 1

Have you tried this?
<?php foreach ($this->cart->contents() as $items): ?>
<?php echo form_hidden($counter.'[rowid]', $items['rowid']); ?> // write this
and then this
<td><?php echo form_input(array('name' => $counter.'[qty]', 'value' => $items['qty'], 'maxlength' => '3', 'size' => '5')); ?></td>
instead of-
<?php echo form_input(array('name' =>'rowid1[]', 'type'=>'text', 'value' => $items['rowid'], 'maxlength' => '3', 'size' => '5')); ?>
I hope this works

Answer 2

Check what query is generated when update query is fire, i think any signal quote is added in your query.
for check the last database query use this function:-
print_r($this->db->last_query());

Answer 3

After a lot of struggled i get my code correctly here is the correct code of insert and update
function add_cart_item_by_barcode(){
$product_code = $this->input->post('barcode', true);
$result = $this->order_model->validate_add_cart_item($product_code);
$rowid = $this->input->post('rowid');
$cart = $this->cart->contents();
foreach ($cart as $cart) {
if($product_code == $cart['id']){
$rowid=$cart['rowid'];
$qty=$cart['qty'];
$data=array(
'rowid'=>$rowid,
'qty'=>$qty+1
);
$data=$this->cart->update($data);
$this->session->set_flashdata('cart_msg', 'add');
redirect('admin/order/new_order/'.$flag ='add');
}
}
if ($result) {
// update rate
$price = $this->check_product_rate($result->product_id, $qty=1);
//product tax check
$tax = $this->product_tax_calculate($result->tax_id, $qty=1, $price);
$data = array(
'id' => $result->product_code,
'qty' => $qty,
'price' => $price,
'buying_price' => $result->buying_price,
'name' => $result->product_name,
'pkprice' => $result->p_price,
'tax' => $tax,
'price_option' => 'general'
);
$this->cart->insert($data);
$this->session->set_flashdata('cart_msg', 'add');
}
redirect('admin/order/new_order/'.$flag ='add');
}