How can i check all selected value quantity? - php

Question

Can anyone help me? how can i check all the product selected on the select or in the option? i'm using codeigniter 3 and i want to check if there was an available stock or none but i'm new and don't know how to do it i wish someone can help me. first it was working if i select a product with 0 quantity it will not process but if i select a first product with a quantity on hand greater than 0 and selected the second one with empty qty it will still process because it only check the stocks of the first product. how can i check all the qty selected in my select option?
my model:
public function create()
{
$user_id = $this->session->userdata('id');
// get store id from user id
$user_data = $this->model_users->getUserData($user_id);
$bill_no = 'BUBBLE-'.strtoupper(substr(md5(uniqid(mt_rand(), true)), 0, 4));
$data = array(
'bill_no' => $bill_no,
'date_time' => strtotime(date('Y-m-d h:i:s a')),
'gross_amount' => $this->input->post('gross_amount_value'),
'service_charge_rate' => $this->input->post('service_charge_rate'),
'service_charge_amount' => ($this->input->post('service_charge_value') > 0) ?$this->input->post('service_charge_value'):0,
'vat_charge_rate' => $this->input->post('vat_charge_rate'),
'vat_charge_amount' => ($this->input->post('vat_charge_value') > 0) ? $this->input->post('vat_charge_value') : 0,
'net_amount' => $this->input->post('net_amount_value'),
'discount' => $this->input->post('discount_amount_value'),
'paid_status' => 3,
'user_id' => $user_id,
'table_id' => $this->input->post('table_name'),
'discount_id' => json_encode($this->input->post('discount')),
'discount_percent' => $this->input->post('discount_perct_value'),
'datetoday' => date('Y-m-d h:i:s a'),
'payment_id' => json_encode($this->input->post('payment')),
);
$count_product = count($this->input->post('product'));
for($x = 0; $x < $count_product; $x++) {
$prodid = $this->input->post('product')[$x];
$prod_quan = $this->model_products->getProductData($prodid);
$inputQuantity = (int)$this->input->post('qty')[$x];
$check = $this->model_orders->check_stock($prodid, $inputQuantity);
if($check == TRUE)
{
$insert = $this->db->insert('orders', $data);
$order_id = $this->db->insert_id();
$count_product = count($this->input->post('product'));
for($x = 0; $x < $count_product; $x++) {
$items = array(
'order_id' => $order_id,
'product_id' => $this->input->post('product')[$x],
'qty' => $this->input->post('qty')[$x],
'rate' => $this->input->post('rate_value')[$x],
'amount' => $this->input->post('amount_value')[$x],
);
$this->db->insert('order_items', $items);
}
$this->load->model('model_tables');
$this->model_tables->update($this->input->post('table_name'), array('available' => 2));
return ($order_id) ? $order_id : false;
}
else
{
return false;
}
}
}
public function check_stock($productId, $inputQuantity)
{
$product = $this->db->get_where('products', ['id' => $productId])->row();
if(isset($product))
{
if($product->qty < $inputQuantity)
{
$this->session->set_flashdata('error','No more stock on some selected items');
return false;
}
else
{
return true;
}
}
}
and my select in view is something like this:
<select class="form-control select_group update-select" data-row-id="row_1" id="product_1" name="product[]" style="width:100%;" onchange="getProductData(1)" required>
<option disabled selected hidden value=''>--Select Products--</option>
<?php foreach ($products as $k => $v): ?>
<option value="<?php echo $v['id'] ?>"><?php echo $v['name'] ?></option>
<?php endforeach ?>
</select>

Answer 1

Easiest solution is to return false as soon as you find a product that is out of stock, something like the following:
Loop through the selected products and for each one check the stock. If you encounter a product that is out of stock, return false.
If all products are in stock, create the order, then loop through the selected products again and add those to the order in the database.
I haven't tested the code below, so there may be errors. I only changed the if($check == TRUE) part and some curly braces.
public function create()
{
$user_id = $this->session->userdata('id');
// get store id from user id
$user_data = $this->model_users->getUserData($user_id);
$bill_no = 'BUBBLE-'.strtoupper(substr(md5(uniqid(mt_rand(), true)), 0, 4));
$data = array(
'bill_no' => $bill_no,
'date_time' => strtotime(date('Y-m-d h:i:s a')),
'gross_amount' => $this->input->post('gross_amount_value'),
'service_charge_rate' => $this->input->post('service_charge_rate'),
'service_charge_amount' => ($this->input->post('service_charge_value') > 0) ?$this->input->post('service_charge_value'):0,
'vat_charge_rate' => $this->input->post('vat_charge_rate'),
'vat_charge_amount' => ($this->input->post('vat_charge_value') > 0) ? $this->input->post('vat_charge_value') : 0,
'net_amount' => $this->input->post('net_amount_value'),
'discount' => $this->input->post('discount_amount_value'),
'paid_status' => 3,
'user_id' => $user_id,
'table_id' => $this->input->post('table_name'),
'discount_id' => json_encode($this->input->post('discount')),
'discount_percent' => $this->input->post('discount_perct_value'),
'datetoday' => date('Y-m-d h:i:s a'),
'payment_id' => json_encode($this->input->post('payment')),
);
$count_product = count($this->input->post('product'));
for($x = 0; $x < $count_product; $x++) {
$prodid = $this->input->post('product')[$x];
$prod_quan = $this->model_products->getProductData($prodid);
$inputQuantity = (int)$this->input->post('qty')[$x];
$check = $this->model_orders->check_stock($prodid, $inputQuantity);
if($check != TRUE)
{
return false;
}
}
$insert = $this->db->insert('orders', $data);
$order_id = $this->db->insert_id();
$count_product = count($this->input->post('product'));
for($x = 0; $x < $count_product; $x++) {
$items = array(
'order_id' => $order_id,
'product_id' => $this->input->post('product')[$x],
'qty' => $this->input->post('qty')[$x],
'rate' => $this->input->post('rate_value')[$x],
'amount' => $this->input->post('amount_value')[$x],
);
$this->db->insert('order_items', $items);
}
$this->load->model('model_tables');
$this->model_tables->update($this->input->post('table_name'), array('available' => 2));
return ($order_id) ? $order_id : false;
}