Magento 2 conditionally hide quantity box

Question

I would like to hide the built in quantity box based on whether i have set a custom attribute for quantity. Some products that dont have a custom attribute for quantity will need to still display the quantity box. I'd like this for everywhere the quantity box is shown, but most importantly and where i am currently trying to get it to work is the product page. For example, one of the products i will have is business cards. I will have a price per each variant (material, number of sides, quantity, lamination etc) which i can create using the custom attributes and this part works fine.

I cannot work out how to do the checking for the custom attribute called quantity. I have tried various things and when i do a var_dump of the variable i just get "NULL" and im not sure where i am going wrong. I am using Magento 2.3 and i am editing the addtocart.phtml template file, which i was hoping to just add an if statement to not show the qty div if it returned true.

The code i have last tried is:

<?php $myquantity = $_product->getCustomAttribute('quantity'); ?>

and when i do a var_dump i just get NULL. The full addtocart.phtml code is with the only changes are the line above and the var_dump line:

<?php $_product = $block->getProduct(); ?>
<?php $myquantity = $_product->getCustomAttribute('quantity'); ?>
<?php $buttonTitle = __('Add to Cart'); ?>
<?php if ($_product->isSaleable()): ?>
<div class="box-tocart">
    <div class="fieldset">
        <?php if ($block->shouldRenderQuantity()): ?>
        <div class="field qty">
        <?php var_dump($myquantity); ?>
            <label class="label" for="qty"><span><?= /* @escapeNotVerified */ __('Qty') ?></span></label>
            <div class="control">
                <input type="number"
                       name="qty"
                       id="qty"
                       value="<?= /* @escapeNotVerified */ $block->getProductDefaultQty() * 1 ?>"
                       title="<?= /* @escapeNotVerified */ __('Qty') ?>"
                       class="input-text qty"
                       data-validate="<?= $block->escapeHtml(json_encode($block->getQuantityValidators())) ?>"
                       />
            </div>
        </div>
        <?php endif; ?>
        <div class="actions">
            <button type="submit"
                    title="<?= /* @escapeNotVerified */ $buttonTitle ?>"
                    class="action primary tocart"
                    id="product-addtocart-button">
                <span><?= /* @escapeNotVerified */ $buttonTitle ?></span>
            </button>
            <?= $block->getChildHtml('', true) ?>
        </div>
    </div>
</div>
<?php endif; ?>
<script type="text/x-magento-init">
    {
        "#product_addtocart_form": {
            "Magento_Catalog/js/validate-product": {}
        }
    }
</script>

I am only at the checkign phase so far, i didnt see the point in trying to write the if statement when i can't return the right information first. Of course, if there is another/better way i can do this i would appreciate the help. I am not much of a developer so i was hoping for a simple resolution.

Thanks

Answer 1

If issue is related to get attribute value, You can use:

<?php $myquantity = $_product->getQuantity(); ?>

----------OR----------

<?php $myquantity = $_product->getAttributeText('quantity'); ?> 

once you have value of $myquantity, you can put your logic.

Hope above will help!

Update I

You can create a Yes/No type attribute instead of drop-down. Default value will be No. for product you want to hide add to cart change value to Yes.

<?php echo $_product->getAttributeText('quantity'); ?>

Will give you value Yes Or No, based on value you can put your logic!

Answer 2

I was just working on a similar task. You should just need to add "getValue()"

<?php $myquantity = $_product->getCustomAttribute('quantity')->getValue(); ?>

Answer 3

i have magento 2.3.7, what do I need to change in the code to make dropdown attribute "quantity_active" yes/no to hide quantity? My code in addtocart.phtml

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

/** @var $block \Magento\Catalog\Block\Product\View */
?>
<?php $_product = $block->getProduct(); ?>
<?php $buttonTitle = __('Add to Cart'); ?>
<?php if ($_product->isSaleable()) :?>
<div class="box-tocart">
    <div class="fieldset">
        <?php if ($block->shouldRenderQuantity()) :?>
        <div class="field qty">
            <label class="label" for="qty"><span><?= $block->escapeHtml(__('Qty')) ?></span></label>
            <div class="control">
                <input type="number"
                       name="qty"
                       id="qty"
                       min="0"
                       value="<?= $block->getProductDefaultQty() * 1 ?>"
                       title="<?= $block->escapeHtmlAttr(__('Qty')) ?>"
                       class="input-text qty"
                       data-validate="<?= $block->escapeHtmlAttr(json_encode($block->getQuantityValidators())) ?>"
                       />
            </div>
        </div>
        <?php endif; ?>
        <div class="actions">
            <button type="submit"
                    title="<?= $block->escapeHtmlAttr($buttonTitle) ?>"
                    class="action primary tocart"
                    id="product-addtocart-button" disabled>
                <span><?= $block->escapeHtml($buttonTitle) ?></span>
            </button>
            <?= $block->getChildHtml('', true) ?>
        </div>
    </div>
</div>
<?php endif; ?>
<script type="text/x-magento-init">
    {
        "#product_addtocart_form": {
            "Magento_Catalog/js/validate-product": {}
        }
    }
</script>