36 lines
912 B
PHP
36 lines
912 B
PHP
<?php
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namespace Illuminate\Database\Eloquent\Relations\Concerns;
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use BackedEnum;
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use InvalidArgumentException;
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use UnitEnum;
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trait InteractsWithDictionary
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{
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/**
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* Get a dictionary key attribute - casting it to a string if necessary.
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*
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* @param mixed $attribute
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* @return mixed
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*
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* @throws \InvalidArgumentException
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*/
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protected function getDictionaryKey($attribute)
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{
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if (is_object($attribute)) {
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if (method_exists($attribute, '__toString')) {
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return $attribute->__toString();
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}
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if ($attribute instanceof UnitEnum) {
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return $attribute instanceof BackedEnum ? $attribute->value : $attribute->name;
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}
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throw new InvalidArgumentException('Model attribute value is an object but does not have a __toString method.');
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}
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return $attribute;
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}
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}
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