[Blog] Bien afficher un attribut personnalisé http://jacques.sh/2013/02/afficher-un-attribut.html

attributes.phtml

<!-- ... -->
<?php
    $_helper = $this->helper('catalog/output');
    $_product = $this->getProduct()
?>
<?php if($_additional = $this->getAdditionalData()): ?>
    <h2><?php echo $this->__('Additional Information') ?></h2>
    <table class="data-table" id="product-attribute-specs-table">
        <col width="25%" />
        <col />
        <tbody>
        <?php foreach ($_additional as $_data): ?>
            <tr>
                <th class="label"><?php echo $this->htmlEscape($this->__($_data['label'])) ?></th>
                <td class="data"><?php echo $_helper->productAttribute($_product, $_data['value'], $_data['code']) ?></td>
            </tr>
        <?php endforeach; ?>
        </tbody>
    </table>
    <script type="text/javascript">decorateTable('product-attribute-specs-table')</script>
<?php endif;?>

call.php

<?php echo $this->helper('catalog/output')->productAttribute($product, $product->getOurAttributeCode(), 'our_attribute_code'); ?>

Helper.php

<?php

class Jbh_ProductAttribute_Helper_Output extends Mage_Core_Helper_Abstract
{

    /**
     * Change the output of our attribute
     * @param Mage_Catalog_Helper_Output $outputHelper The helper
     * @param string $attributeHtml The HTML
     * @param array $params The parameters
     * @access public
     * @return string
     */
    public function productAttribute(Mage_Catalog_Helper_Output $outputHelper, $attributeHtml, array $params)
    {
        // Just for us ;)
        if ($params['attribute'] == 'our_attribute_code') {
            // The product
            $product = $params['product'];

            // Already processed?
            if (null !== $html = $product->getOurAttributeCodeProcessed()) {
                return $html;
            }
            
            // Create our block
            $block = Mage::app()->getLayout()->createBlock('cms/block');

            // Set the CMS block identifier
            $block->setBlockId($product->getOurAttributeCode());

            // Generate the HTML
            $html = $block->toHtml();

            // op! in the product
            $product->setOurAttributeCodeProcessed($html);

            // Return the HTML
            return $html;
        }
        
        // Continue the other attributes
        return $attributeHtml;
    }

}

Observer.php

<?php

class Jbh_ProductAttribute_Model_Observer
{

    /**
     * Add attribute handler
     * @param Varien_Event_Observer $event Our event
     * @access public
     * @return void
     */
    public function addAttributeHandler(Varien_Event_Observer $event)
    {
        $event->getHelper()->addHandler('productAttribute', Mage::helper('jbh_productattribute/output'));
    }

}

Output_addHandler.php

<?php
/* ... */
class Mage_Catalog_Helper_Output extends Mage_Core_Helper_Abstract
{
    /* ... */

    /**
     * Adding method handler
     *
     * @param   string $method
     * @param   object $handler
     * @return  Mage_Catalog_Helper_Output
     */
    public function addHandler($method, $handler)
    {
        if (!is_object($handler)) {
            return $this;
        }
        $method = strtolower($method);

        if (!isset($this->_handlers[$method])) {
            $this->_handlers[$method] = array();
        }

        $this->_handlers[$method][] = $handler;
        return $this;
    }

    /* ... */
}

Output_construct.php

<?php
/* ... */
class Mage_Catalog_Helper_Output extends Mage_Core_Helper_Abstract
{
    /* ... */

    /**
     * Constructor
     */
    public function __construct()
    {
        Mage::dispatchEvent('catalog_helper_output_construct', array('helper'=>$this));
    }

    /* ... */
}

Output_process.php

<?php
/* ... */
class Mage_Catalog_Helper_Output extends Mage_Core_Helper_Abstract
{
    /* ... */

    /**
     * Process all method handlers
     *
     * @param   string $method
     * @param   mixed $result
     * @param   array $params
     * @return unknown
     */
    public function process($method, $result, $params)
    {
        foreach ($this->getHandlers($method) as $handler) {
            if (method_exists($handler, $method)) {
                $result = $handler->$method($this, $result, $params);
            }
        }
        return $result;
    }

    /* ... */
}

Output_productAttribute.php

<?php
/* ... */
class Mage_Catalog_Helper_Output extends Mage_Core_Helper_Abstract
{
    /* ... */

    /**
     * Prepare product attribute html output
     *
     * @param   Mage_Catalog_Model_Product $product
     * @param   string $attributeHtml
     * @param   string $attributeName
     * @return  string
     */
    public function productAttribute($product, $attributeHtml, $attributeName)
    {
        $attribute = Mage::getSingleton('eav/config')->getAttribute(Mage_Catalog_Model_Product::ENTITY, $attributeName);
        if ($attribute && $attribute->getId() && ($attribute->getFrontendInput() != 'media_image')
            && (!$attribute->getIsHtmlAllowedOnFront() && !$attribute->getIsWysiwygEnabled())) {
                if ($attribute->getFrontendInput() != 'price') {
                    $attributeHtml = $this->escapeHtml($attributeHtml);
                }
                if ($attribute->getFrontendInput() == 'textarea') {
                    $attributeHtml = nl2br($attributeHtml);
                }
        }
        if ($attribute->getIsHtmlAllowedOnFront() && $attribute->getIsWysiwygEnabled()) {
            if (Mage::helper('catalog')->isUrlDirectivesParsingAllowed()) {
                $attributeHtml = $this->_getTemplateProcessor()->filter($attributeHtml);
            }
        }

        $attributeHtml = $this->process('productAttribute', $attributeHtml, array(
            'product'   => $product,
            'attribute' => $attributeName
        ));

        return $attributeHtml;
    }

    /* ... */
}