I am working on custom extension and need to override Magento\Catalog\Block\Product\View\Gallery block.

I have followed this method.

In di.xml,

<preference for="Magento\Catalog\Block\Product\View\Gallery" type="[Company]\[Vendor]\Block\Catalog\Product\View\Gallery"/>

In [Company][Vendor]\Block\Catalog\Product\View\Gallery.php

namespace [Company]\[Vendor]\Block\Catalog\Product\View;

class Gallery extends \Magento\Catalog\Block\Product\View\Gallery

public function getGalleryImagesJson()

        $imagesItems = [];
        foreach ($this->getGalleryImages() as $image) {
            $imagesItems[] = [
                'thumb' => $image->getData('small_image_url'),
                'img' => $image->getData('medium_image_url'),
                'full' => $image->getData('large_image_url'),
                'caption' => $image->getLabel(),
                'position' => $image->getPosition(),
                'isMain' => $this->isMainImage($image),
        if (empty($imagesItems)) {
            $imagesItems[] = [
                'thumb' => $this->_imageHelper->getDefaultPlaceholderUrl('thumbnail'),
                'img' => $this->_imageHelper->getDefaultPlaceholderUrl('image'),
                'full' => $this->_imageHelper->getDefaultPlaceholderUrl('image'),
                'caption' => '',
                'position' => '0',
                'isMain' => true,
     return json_encode($imagesItems);

When I do this, More Views Images of the product is don't show any more.

Can you help me into this?

Thanks in advance.


I found the solution. I am doing the same thing by using the plugin functionality of magento2.

For that in di.xml file specify plugin.

<type name="Magento\Catalog\Block\Product\View\Gallery">
        <plugin name="plugin_block_catalog_product_view_gallery"

It is better to used.

  • Hi Dhiren, I am trying the plugin method but on my plugin function afterGetGalleryImagesJson(), I want the product data, how can i do that. $this->getProduct(); didn't work. can you help please – aton1004 Feb 2 '17 at 5:37
  • @aton1004 Can you tell me what you have try? And what you try to archive? – Dhiren Vasoya Feb 2 '17 at 5:49
  • thanks for the reply, actually i wanted product data to check some attribute value before making some changes to the result of gallery , I got it from registry – aton1004 Feb 2 '17 at 8:33

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