Grouped Product Display a sum of all associated products stock

Question

I search everywhere but cannot find a good answer.

In my 1.9 magento rwd theme, I set for single product to display the stock qty after stock status, but when i put some simple products to a grouped product type then in the table of grouped products I can see the correct stock qty and in main window i see and is display for total group stock qty = 0

This is my code:

rwd\default\template\catalog\product\view\addtocart.phtml

<?php if($_product->isSaleable()): ?>
    <br></br>
    <?php if ($this->displayProductStockStatus()): ?>
    <?php if ($_product->isAvailable()): ?>
        <p class="availability in-stock"><?php echo $this->__('Cantitate disponibila :') ?> <span><!--<?php echo $this->__('In stock') ?>--><?= (int) Mage::getModel('cataloginventory/stock_item')->loadByProduct($_product)->getQty()?></span> <?php echo $this->__('buc.') ?></p>
    <?php else: ?>
        <p class="availability out-of-stock"><?php echo $this->__('Cantitate disponibila :') ?> <span><!--<?php echo $this->__('In stock') ?>--><?= (int) Mage::getModel('cataloginventory/stock_item')->loadByProduct($_product)->getQty()?></span> <?php echo $this->__('buc.') ?>
        </p>
        <?php echo $this->__('Availability:') ?> <span><?php echo $this->__('Out of stock') ?></span></p>
        <p class="availability out-of-stock"><span></br><?php echo $this->__() ?><span style="color:#0b9817;text-align:center;">Stoc Furnizor</span></br><span style="color:#de4231;text-align:center;">Comanda telefonic 0785.737.227</span></p>
    <?php endif; ?>
    <?php endif; ?>
    <?php echo $this->__('COD PRODUS: ') ?><?php echo $_product->getSku() ?><br/>
    <?php echo $_product->getAttributeText('transport_01') ?>

Please see the image:

Can someone help me or to display total stock of asociated products or to hide only the main stock code.???

Answer 1

the configurable product in Magento doesn't store the sum of all the stocks related to its simple associated products.

A quick win solution could be to hide the main stock qty by changing the initial condition from: <?php if ($this->displayProductStockStatus()): ?>

to

<?php if ($this->displayProductStockStatus() && ($_product-> getTypeId() != Mage_Catalog_Model_Product_Type::TYPE_CONFIGURABLE)): ?>

Alternatively, you should sum all the stock quantities for every simple product

This for configurable products

$totalStock = 0;
foreach ($_product->getTypeInstance(true)->getUsedProducts(null, $_product) as $simpleProduct) {
    $simpleStock = Mage::getModel('cataloginventory/stock_item')->loadByProduct($simpleProduct)->getQty();
    $totalStock += $simpleStock;
}

This for grouped products

$totalStock = 0;
foreach ($_product->getTypeInstance(true)->getAssociatedProducts($_product) as $simpleProduct) {
    $simpleStock = Mage::getModel('cataloginventory/stock_item')->loadByProduct($simpleProduct)->getQty();
    $totalStock += $simpleStock;
}

But performance-wise this is not optimal, as it loads a product model for each associated product.

So, your final code could be

<?php if($_product->isSaleable()): ?>
    <?php if ($this->displayProductStockStatus()): ?>
        <?php
        $productStock = 0;
        if ($_product->getTypeId() == Mage_Catalog_Model_Product_Type::TYPE_CONFIGURABLE) {
            foreach ($_product->getTypeInstance(true)->getUsedProducts(null, $_product) as $simpleProduct) {
                $simpleStock = Mage::getModel('cataloginventory/stock_item')->loadByProduct($simpleProduct)->getQty();
                $productStock += $simpleStock;
            }
        } elseif ($_product->getTypeId() == Mage_Catalog_Model_Product_Type::TYPE_GROUPED) {
            foreach ($_product->getTypeInstance(true)->getAssociatedProducts($_product) as $simpleProduct) {
                $simpleStock = Mage::getModel('cataloginventory/stock_item')->loadByProduct($simpleProduct)->getQty();
                $productStock += $simpleStock;
            }
        } else {
            $productStock = (int)Mage::getModel('cataloginventory/stock_item')->loadByProduct($_product)->getQty();
        }
        ?>
        <?php if ($_product->isAvailable()): ?>
            <p class="availability in-stock"><?php echo $this->__('Cantitate disponibila :') ?> <span><!--<?php echo $this->__('In stock') ?>--><?= $productStock ?></span> <?php echo $this->__('buc.') ?></p>
        <?php else: ?>
            <p class="availability out-of-stock"><?php echo $this->__('Cantitate disponibila :') ?> <span><!--<?php echo $this->__('In stock') ?>--><?= $productStock?></span> <?php echo $this->__('buc.') ?></p>
            <?php echo $this->__('Availability:') ?> <span><?php echo $this->__('Out of stock') ?></span></p>
            <p class="availability out-of-stock"><span></br><?php echo $this->__() ?><span style="color:#0b9817;text-align:center;">Stoc Furnizor</span></br><span style="color:#de4231;text-align:center;">Comanda telefonic 0785.737.227</span></p>
        <?php endif; ?>
    <?php endif; ?>
    <?php echo $this->__('COD PRODUS: ') ?><?php echo $_product->getSku() ?><br/>
    <?php echo $_product->getAttributeText('transport_01') ?>