When No value is entered for multiselect attribute whose values are mapped with image, Broken image is getting displayed

Question

I have created an Multiselect attribute featuredetail in magento 1.9.2.4. Then mapping is done with an image for every attribute value.

My phtml file for calling this attribute is:

<div class="feature">   

    <?php
    $Feature = explode(",",$_product->getResource()
    ->getAttribute('featuredetail')->getFrontend()
    ->getValue($_product));

      foreach($Feature as $key => $value): ?>
         <a href="<?php echo $_product->getProductUrl() ?>" ?>
            <?php echo "<img src='".Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_MEDIA)."wysiwyg/feature/detail/".trim($value).".png'/>"; ?>
        </a>
    <?php echo $value; ?>
  <?php endforeach; ?> 
</div>

Then I called this attribute to be displayed in product-collateral tab in product details page. When value is not entered for any attribute that is included inside the product collateral tab, the tab should be hidden. So I modified the product-collateral tab code in view.phtml like this:

<div class="product-collateral toggle-content tabs">
    <?php if ($detailedInfoGroup = $this->getChildGroup('detailed_info', 'getChildHtml')):?>
        <dl id="collateral-tabs" class="collateral-tabs">
            <?php foreach ($detailedInfoGroup as $alias => $html):?>
            <?php  

                    **if(trim($html)=="") continue;** 
            ?>
                <dt class="tab"><span><?php echo $this->escapeHtml($this->getChildData($alias, 'title')) ?></span></dt>
                <dd class="tab-container">
                    <div class="tab-content"><?php echo $html ?></div>
                </dd>
            <?php endforeach;?>
        </dl>
    <?php endif; ?>
</div>

This modified code is working well for the description attribute. But for the multiselect attribute with mapped image, when no value is selected for this attribute it is displaying broken image instead of hiding the tab.

What modification should be done to resolve this?

Answer 1

Change

<a href="<?php echo $_product->getProductUrl() ?>" ?>
            <?php echo "<img src='".Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_MEDIA)."wysiwyg/feature/detail/".trim($value).".png'/>"; ?>
        </a>

to

$imagePath = Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_MEDIA)."wysiwyg/feature/detail/".trim($value).".png ;
if (file_exists($imagePath)) {
<a href="<?php echo $_product->getProductUrl() ?>" ?>
            <?php echo "<img src='". $imagePath ."'/>"; ?>
        </a>
}

Basically you need to put a file exists check.