Magento 2 set and get cookie

magento-2-set-and-get-cookie

path: If you want get the value from another page, notice the path setting '/' because cookies are only accessible to the specified path and any subpaths

<script type="text/javascript">
    define([
        'jquery',
        'mage/cookies'
    ], function ($) {
        // get
        $.cookie('cookiename');
        // set
        $.cookie('cookiename', cookievalue);
        // set
        $.cookie('cookiename', 'value', { expires: 7, path: '/' });
        // delete
        $.cookie('cookiename', 'value', { expires: -1, path: '/' });
    });
</script>


<?php

use Magento\Framework\Stdlib\Cookie\CookieReaderInterface;

class SampleCookie
{
    /**
     * Cookie name
     */
    const COOKIE_NAME = 'cookie';

    /**
     * @var \Magento\Framework\Stdlib\Cookie\PhpCookieManager
     */
    private $phpCookieManager;

    /**
     * @var \Magento\Backend\Helper\Data
     */
    private $backendData;

    /**
     * @var \Magento\Framework\Stdlib\Cookie\PublicCookieMetadataFactory
     */
    private $cookieMetadataFactory;

    /**
     * @var CookieReaderInterface
     */
    private $cookieReader;

    /**
     * @param \Magento\Framework\Stdlib\Cookie\PhpCookieManager $phpCookieManager
     * @param \Magento\Framework\Stdlib\Cookie\PublicCookieMetadataFactory $cookieMetadataFactory
     * @param CookieReaderInterface $cookieReader
     * @param \Magento\Backend\Helper\Data $backendData
     */
    public function __construct(
        \Magento\Framework\Stdlib\Cookie\PhpCookieManager $phpCookieManager,
        \Magento\Framework\Stdlib\Cookie\PublicCookieMetadataFactory $cookieMetadataFactory,
        CookieReaderInterface $cookieReader,
        \Magento\Backend\Helper\Data $backendData
    ) {
        $this->phpCookieManager = $phpCookieManager;
        $this->cookieMetadataFactory = $cookieMetadataFactory;
        $this->cookieReader = $cookieReader;
        $this->backendData = $backendData;
    }

    /**
     * Get cookie
     * @return string|null
     */
    public function getCookie()
    {
        return $this->cookieReader->getCookie(self::COOKIE_NAME, null);
    }

    /**
     * Set cookie
     * @param string $string
     * @return $this
     */
    public function setCookie($string)
    {
        $metaData = $this->createCookieMetaData();
        $metaData->setPath('/');
        // $metaData->setPath('/' . $this->backendData->getAreaFrontName());
        // $metaData->setSameSite('Strict');

        $this->phpCookieManager->setPublicCookie(
            self::COOKIE_NAME,
            $string,
            $metaData
        );

        return $this;
    }

    /**
     * Delete cookie
     * @return $this
     */
    public function deleteCookie()
    {
        $metaData = $this->createCookieMetaData();
        $metaData->setPath('/')->setDuration(-1);
        // $metaData->setPath('/' . $this->backendData->getAreaFrontName())->setDuration(-1);

        $this->phpCookieManager->setPublicCookie(
            self::COOKIE_NAME,
            '',
            $metaData
        );

        return $this;
    }

    /**
     * Create Cookie Metadata instance
     * @return \Magento\Framework\Stdlib\Cookie\PublicCookieMetadata
     */
    private function createCookieMetaData()
    {
        return $this->cookieMetadataFactory->create();
    }
}