config = $config; $this->escaper = $escaper; $this->urlBuilder = $urlBuilder; $this->layout = $layout; } public function afterRenderResult( ResultInterface $subject, ResultInterface $result, ResponseInterface $response ): ResultInterface { $output = $response->getBody(); if ($this->config->getModuleConfig('other/prev_next') && $subject instanceof \Magento\Framework\View\Result\Page && !preg_match(self::PREV_NEXT_LINK_REGEX, $output) ) { $output = $this->modifyBody($output); $response->setBody($output); } return $result; } public function modifyBody(string $output): string { $html = $this->getPrevNextLinkContent(); if ($html) { $head = ''; $output = str_replace($head, $html . $head, $output); } return $output; } public function getPrevNextLinkContent(): string { $html = ''; $productListBlock = $this->getCategoryProductListBlock(); if (!$productListBlock) { return $html; } if ($productListBlock->getLayer()->getCurrentCategory()->getDisplayMode() === Category::DM_PAGE) { return $html; } $toolbarBlock = $productListBlock->getToolbarBlock(); /** @var \Magento\Theme\Block\Html\Pager $pagerBlock */ $pagerBlock = $toolbarBlock->getChildBlock('product_list_toolbar_pager'); if ($pagerBlock) { $pagerBlock ->setLimit($toolbarBlock->getLimit()) ->setAvailableLimit($toolbarBlock->getAvailableLimit()) ->setCollection($productListBlock->getLayer()->getProductCollection()); $lastPage = $pagerBlock->getLastPageNum(); $currentPage = $pagerBlock->getCurrentPage(); if ($currentPage > 1) { $url = $this->getPageUrl($pagerBlock->getPageVarName(), $currentPage - 1); $html .= sprintf($this->getLinkTemplate(), 'prev', $url); } if ($currentPage < $lastPage) { $url = $this->getPageUrl($pagerBlock->getPageVarName(), $currentPage + 1); $html .= sprintf($this->getLinkTemplate(), 'next', $url); } } return $html; } /** * @return \Magento\Catalog\Block\Product\ListProduct */ private function getCategoryProductListBlock() { $productListBlock = $this->layout->getBlock('category.products.list'); if (!$productListBlock) { foreach ($this->layout->getAllBlocks() as $block) { if ($block instanceof ListProduct) { $productListBlock = $block; break; } } } return $productListBlock; } private function getPageUrl(string $key, int $value): string { $currentUrl = $this->urlBuilder->getCurrentUrl(); $currentUrl = $this->escaper->escapeUrl($currentUrl); $result = preg_replace('/(\W)' . $key . '=\d+/', "$1$key=$value", $currentUrl, -1, $count); if ($value == 1) { $result = str_replace($key . '=1&', '', $result); //not last & not single param $result = str_replace('&' . $key . '=1', '', $result); //last param $result = str_replace('?' . $key . '=1', '', $result); //single param } elseif (!$count) { $delimiter = (strpos($currentUrl, '?') === false) ? '?' : '&'; $result .= $delimiter . $key . '=' . $value; } return $result; } private function getLinkTemplate(): string { return '' . PHP_EOL; } }