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<?php |
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namespace Spatie\Translatable; |
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use Spatie\Translatable\Events\TranslationHasBeenSet; |
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use Spatie\Translatable\Exceptions\AttributeIsNotTranslatable; |
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trait HasTranslations |
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{ |
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/** |
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* @param string $attributeName |
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* |
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* @return mixed |
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*/ |
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public function getAttributeValue($attributeName) |
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{ |
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if (!$this->isTranslatableAttribute($attributeName)) { |
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return parent::getAttributeValue($attributeName); |
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} |
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return $this->getTranslation($attributeName, config('app.locale')); |
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} |
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/** |
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* @param string $attributeName |
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* @param string $locale |
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* |
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* @return mixed |
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*/ |
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public function translate(string $attributeName, string $locale = '') |
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{ |
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return $this->getTranslation($attributeName, $locale); |
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} |
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/*** |
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* @param string $attributeName |
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* @param string $locale |
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* @return mixed |
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*/ |
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public function getTranslation(string $attributeName, string $locale) |
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{ |
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$translations = $this->getTranslations($attributeName); |
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return $translations[$locale] ?? $this->castTranslation('', $attributeName); |
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} |
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public function getTranslations(string $attributeName) : array |
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{ |
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$this->guardAgainstUntranslatableAttribute($attributeName); |
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$translations = json_decode($this->getAttributes()[$attributeName] ?? '{}', true); |
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$castTranslations = array_map(function ($translation) use ($attributeName) { |
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return $this->castTranslation($translation, $attributeName); |
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}, $translations); |
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return $castTranslations; |
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} |
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public function setTranslation(string $attributeName, string $locale, $value) |
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{ |
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$this->guardAgainstUntranslatableAttribute($attributeName); |
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$translations = $this->getTranslations($attributeName); |
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$oldValue = $translations[$locale] ?? $this->castTranslation('', $attributeName); |
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$translations[$locale] = $value; |
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$this->setAttribute($attributeName, $translations); |
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event(new TranslationHasBeenSet($this, $attributeName, $locale, $oldValue, $value)); |
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return $this; |
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} |
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public function setTranslations(string $attributeName, array $translations) |
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{ |
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$this->guardAgainstUntranslatableAttribute($attributeName); |
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foreach ($translations as $locale => $translation) { |
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$this->setTranslation($attributeName, $locale, $translation); |
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} |
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return $this; |
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} |
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public function forgetTranslation(string $attributeName, string $locale) |
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{ |
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$translations = $this->getTranslations($attributeName); |
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unset($translations[$locale]); |
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$this->setAttribute($attributeName, $translations); |
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return $this; |
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} |
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public function getTranslatedLocales(string $attributeName) : array |
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{ |
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return array_keys($this->getTranslations($attributeName)); |
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} |
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protected function isTranslatableAttribute(string $attributeName) : bool |
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{ |
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return TranslatableAttributeCollection::createForModel($this)->isTranslatable($attributeName); |
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} |
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protected function castTranslation($translation, $attributeName) |
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{ |
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$cast = TranslatableAttributeCollection::createForModel($this)->getCast($attributeName); |
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if ($cast === 'bool') { |
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return boolval($translation); |
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} |
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if ($cast === 'integer') { |
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return intval($translation); |
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} |
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if ($cast === 'float') { |
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return floatval($translation); |
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} |
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if ($cast === 'array') { |
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return (array) $translation; |
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} |
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return $translation; |
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} |
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protected function guardAgainstUntranslatableAttribute(string $attributeName) |
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{ |
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if (!$this->isTranslatableAttribute($attributeName)) { |
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throw AttributeIsNotTranslatable::make($attributeName, $this); |
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} |
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} |
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} |
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idable
provides a methodequalsId
that in turn relies on the methodgetId()
. If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()
as an abstract method to the trait will make sure it is available.