View.php

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<?php
namespace Magento\Review\Block;

class View extends \Magento\Catalog\Block\Product\AbstractProduct
{
    protected $_template = 'Magento_Review::view.phtml';

    protected $_voteFactory;

    protected $_ratingFactory;

    protected $_reviewFactory;

    public function __construct(
        \Magento\Catalog\Block\Product\Context $context,
        \Magento\Review\Model\Rating\Option\VoteFactory $voteFactory,
        \Magento\Review\Model\RatingFactory $ratingFactory,
        \Magento\Review\Model\ReviewFactory $reviewFactory,
        array $data = []
    ) {
        $this->_voteFactory = $voteFactory;
        $this->_reviewFactory = $reviewFactory;
        $this->_ratingFactory = $ratingFactory;

        parent::__construct(
            $context,
            $data
        );
    }

    public function getProductData()
    {
        return $this->_coreRegistry->registry('current_product');
    }

    public function getReviewData()
    {
        return $this->_coreRegistry->registry('current_review');
    }

    public function getBackUrl()
    {
        return $this->getUrl('*/*/list', ['id' => $this->getProductData()->getId()]);
    }

    public function getRating()
    {
        if (!$this->getRatingCollection()) {
            $ratingCollection = $this->_voteFactory->create()->getResourceCollection()->setReviewFilter(
                $this->getReviewId()
            )->setStoreFilter(
                $this->_storeManager->getStore()->getId()
            )->addRatingInfo(
                $this->_storeManager->getStore()->getId()
            )->load();
            $this->setRatingCollection($ratingCollection->getSize() ? $ratingCollection : false);
        }
        return $this->getRatingCollection();
    }

    public function getRatingSummary()
    {
        if (!$this->getRatingSummaryCache()) {
            $this->setRatingSummaryCache(
                $this->_ratingFactory->create()->getEntitySummary($this->getProductData()->getId())
            );
        }
        return $this->getRatingSummaryCache();
    }

    public function getTotalReviews()
    {
        if (!$this->getTotalReviewsCache()) {
            $this->setTotalReviewsCache(
                $this->_reviewFactory->create()->getTotalReviews(
                    $this->getProductData()->getId(),
                    false,
                    $this->_storeManager->getStore()->getId()
                )
            );
        }
        return $this->getTotalReviewsCache();
    }

    public function dateFormat($date)
    {
        return $this->formatDate($date, \IntlDateFormatter::LONG);
    }

    public function getReviewsSummaryHtml(
        \Magento\Catalog\Model\Product $product,
        $templateType = false,
        $displayIfNoReviews = false
    ) {
        if (!$product->getRatingSummary()) {
            $this->_reviewFactory->create()->getEntitySummary($product, $this->_storeManager->getStore()->getId());
        }
        return parent::getReviewsSummaryHtml($product, $templateType, $displayIfNoReviews);
    }
}