Post by Thor_SilverSpool » Mon Sep 07, 2020 3:22 pm

Hello Community,

Situation:
We sell two types of products: 'by item' and 'by metre'.
The 'by item' setup is straight forward, but I can't figure out how to do the 'by metre' setup.

Challenge 'by Metre':
1) Should have 3 prices: quarter, half and full.
2) Should substract from the base stock: quarter -1, half -2, full - 4 (I multiplied the base stock by 4, as it comes from a single roll).
3) Should show up in the cart / checkout as either 'quarter' or by metre.

I tried options, but they all have there own stock, rather then subtracting from the base stock.

Suggestions for a 'free' solution highly appriciated.
Last edited by Thor_SilverSpool on Tue Sep 08, 2020 2:56 pm, edited 1 time in total.


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Post by khnaz35 » Mon Sep 07, 2020 3:27 pm

Thor_SilverSpool wrote:
Mon Sep 07, 2020 3:22 pm
I tried options, but they all have there own stock, rather then subtracting from the base stock.
how exactly have you tried ?

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Post by Thor_SilverSpool » Mon Sep 07, 2020 5:05 pm

khnaz35 wrote:
Mon Sep 07, 2020 3:27 pm
how exactly have you tried ?
First, I tried the vanilla setup, but the main stock is always reduced by the order amount - not good.
Also the alternative stock for the other options is not reduced either in vanilla setup.

So, I was looking at /catalog/controller/checkout/confirm.php - if I can substiture the product['subtract'] by the option['quantity]' - as this would always remove the 'correct' amount without the need to fiddle around much and would keep the main functions intact.

And this is, where I'm stuck.


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Post by chongshengdz » Tue Sep 08, 2020 1:23 am

try to use "option" and "option value"

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Post by Thor_SilverSpool » Tue Sep 08, 2020 2:05 am

chongshengdz wrote:
Tue Sep 08, 2020 1:23 am
try to use "option" and "option value"
I have the value itself, no bother.

from confirm.php - row 376

Code: Select all

$data['products'][] = array(
					'cart_id'    => $product['cart_id'],
					'product_id' => $product['product_id'],
					'name'       => $product['name'] . ":" . $quant, // check that is is there
					'model'      => $product['model'],
					'option'     => $option_data,
					'recurring'  => $recurring,
					'quantity'   => $product['quantity'],
					'subtract'   => $product['subtract'] * $quant,  //expect to myltiply the stock to be reduced accordingly.
					'price'      => $this->currency->format($this->tax->calculate($product['price'], $product['tax_class_id'], $this->config->get('config_tax')), $this->session->data['currency']),
					'total'      => $this->currency->format($this->tax->calculate($product['price'], $product['tax_class_id'], $this->config->get('config_tax')) * $product['quantity'], $this->session->data['currency']),
					'href'       => $this->url->link('product/product', 'product_id=' . $product['product_id'])
				);
The value ($quant) is clearly shown as the one given in the option.
So, I put 1 item into the cart, do the checkout and $quant == 2, but the total stock is only reduced by 1; I would expect the stock to be reduced by 2 here.

So, where do I miss something? maybe I need to amend something else as well?


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Post by straightlight » Tue Sep 08, 2020 2:34 am

You need to re-pull the cart quantity as described in your catalog/controller/checkout/cart.php file or your system/library/cart/cart.php file.

Code: Select all

$product_total = 0;

				foreach ($products as $product_2) {
					if ($product_2['product_id'] == $product['product_id']) {
						$product_total += $product_2['quantity'];
					}
				}
This example shows += in the loop and inside the if statement of the foreach statement. Simply manipulate it the way you want from there.

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Post by Thor_SilverSpool » Tue Sep 08, 2020 3:36 am

straightlight wrote:
Tue Sep 08, 2020 2:34 am
You need to re-pull the cart quantity as described in your catalog/controller/checkout/cart.php file or your system/library/cart/cart.php file.
This example shows += in the loop and inside the if statement of the foreach statement. Simply manipulate it the way you want from there.
catalog/controller/checkout/cart.php

Code: Select all

			foreach ($products as $product) {
				$product_total = 0;
				

				foreach ($products as $product_2) {
					if ($product_2['product_id'] == $product['product_id']) {
						$quant = 1;
						foreach ($product_2['option'] as $option) {
							if (isset($option['quantity'])) {
								$quant = $option['quantity'];
							} else {
								$quant = 0;
							}
						}
						$product_total += ($product_2['quantity'] * $quant);
					}
				}
system/library/cart/cart.php

Code: Select all

	public function countProducts() {
		$product_total = 0;

		$products = $this->getProducts();

		foreach ($products as $product) {
			$quant = 1;
			foreach ($product['option'] as $option) {
				if (isset($option['quantity'])) {
					$quant = $option['quantity'];
				} else {
					$quant = 0;
				}
			}
			$product_total += ($product['quantity'] * $quant);
		}

		return $product_total;
	}
No luck - the quantity of the stock of the product is still only reduced by 1 (instead of the expected 2)


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Post by letxobnav » Tue Sep 08, 2020 7:58 am

stock is only reduced when adding order history both for the product and options if subtract stock has been set for them.
that is done in catalog/model/checkout/order.php.
Not grasping what you are doing in the cart.

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Post by Thor_SilverSpool » Tue Sep 08, 2020 2:55 pm

letxobnav wrote:
Tue Sep 08, 2020 7:58 am
that is done in catalog/model/checkout/order.php.
Cheers - two steps further - now all the little things to be done.


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