AppBundle\Helper\HelperBase

Complexity

Total Complexity

5

Size/Duplication

Total Lines	62
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Importance

Changes	1
Bugs	0	Features	0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	getCacheKey()	0	4	1
A	cacheHas()	0	6	1
A	cacheGet()	0	10	2
A	cacheSave()	0	9	1

<?php

namespace AppBundle\Helper;

use DateInterval;
use Symfony\Component\DependencyInjection\Container;

abstract class HelperBase
{

    /** @var Container */
    protected $container;

    /**
     * Get a cache key.
     * @param string $key
     * @return string The key with a representation of the class name prefixed.
     */
    private function getCacheKey($key)
    {
        return str_replace('\\', '', get_class($this)).'.'.$key;
    }

    /**
     * Find out whether the given key exists in the cache.
     * @param string $key The cache key.
     * @return boolean
     */
    protected function cacheHas($key)
    {
        /** @var \Symfony\Component\Cache\Adapter\AdapterInterface $cache */
        $cache = $this->container->get('cache.app');
        return $cache->getItem($this->getCacheKey($key))->isHit();
    }

    /**
     * Get a value from the cache. With this it is not possible to tell the difference between a
     * cached value of 'null' and there being no cached value; if that situation is likely, you
     * should use the cache service directly.
     * @param string $key The cache key.
     * @return mixed|null Whatever's in the cache, or null if the key isn't present.
     */
    protected function cacheGet($key)
    {
        /** @var \Symfony\Component\Cache\Adapter\AdapterInterface $cache */
        $cache = $this->container->get('cache.app');
        $item = $cache->getItem($this->getCacheKey($key));
        if ($item->isHit()) {
            return $item->get();
        }
        return null;
    }

    /**
     * Save a value to the cache.
     * @param string $key The cache key.
     * @param string $value The value to cache.
     * @param string $expiresAfter A DateInterval interval specification.
     */
    protected function cacheSave($key, $value, $expiresAfter)
    {
        /** @var \Symfony\Component\Cache\Adapter\AdapterInterface $cache */
        $cache = $this->container->get('cache.app');
        $item = $cache->getItem($this->getCacheKey($key));
        $item->set($value);
        $item->expiresAfter(new DateInterval($expiresAfter));
        $cache->save($item);
    }
}