LazyPropertiesTrait::load()   A
last analyzed

Complexity

Conditions 4
Paths 2

Size

Total Lines 14
Code Lines 8

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 0
CRAP Score 20

Importance

Changes 0
Metric Value
c 0
b 0
f 0
dl 0
loc 14
ccs 0
cts 12
cp 0
rs 9.2
cc 4
eloc 8
nc 2
nop 1
crap 20
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<?php
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namespace Majora\Framework\Model;
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/**
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 * Trait which provides lazy load delegates call on fields.
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 */
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trait LazyPropertiesTrait
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{
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    /**
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     * @var EntityCollection
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     */
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    private $delegatesCollection;
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    /**
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     * @see LazyPropertiesInterface::registerLoader()
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     */
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    public function registerLoader($field, \Closure $delegate)
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    {
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        if (!$this->delegatesCollection instanceof EntityCollection) {
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            $this->delegatesCollection = new EntityCollection();
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        }
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        $this->delegatesCollection->set(strtolower($field), $delegate);
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    }
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    /**
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     * @see LazyPropertiesInterface::registerLoaders()
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     */
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    public function registerLoaders(array $loaders)
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    {
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        foreach ($loaders as $field => $closure) {
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            $this->registerLoader($field, $closure);
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        }
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    }
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    /**
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     * Load given field if able to, define his value and return it.
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     *
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     * @example
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     *   public function getRelatedEntity()
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     *   {
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     *       return $this->load('relatedEntity');
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     *   }
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     *
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     * @param string $field
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     *
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     * @return mixed|null field value if retrieved
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     */
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    protected function load($field)
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    {
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        if (!is_null($this->$field)
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            || !$this->delegatesCollection
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            || !$this->delegatesCollection->containsKey($key = strtolower($field))
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        ) {
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            return $this->$field;
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        }
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        $loader = $this->delegatesCollection->get($key);
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        $this->delegatesCollection->remove($key);
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        return $this->$field = $loader($this);
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    }
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}
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