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<?php |
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namespace Spatie\Translatable; |
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use Illuminate\Support\Str; |
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use Illuminate\Support\Facades\Config; |
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use Spatie\Translatable\Scopes\WhereScope; |
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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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* The "booting" method of the model. |
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* |
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* @return void |
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*/ |
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protected static function bootHasTranslations() |
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{ |
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static::addGlobalScope(new WhereScope); |
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} |
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/** |
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* @param $key |
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* @return string |
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*/ |
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public function getAttributeValue($key) |
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{ |
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if (!$this->isTranslatableAttribute($key)) { |
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return parent::getAttributeValue($key); |
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} |
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return $this->getTranslation($key, $this->getLocale()); |
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} |
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/** |
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* @param $key |
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* @param $value |
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* @return HasTranslations |
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*/ |
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public function setAttribute($key, $value) |
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{ |
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// Pass arrays and untranslatable attributes to the parent method. |
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if (!$this->isTranslatableAttribute($key) || is_array($value)) { |
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return parent::setAttribute($key, $value); |
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} |
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// If the attribute is translatable and not already translated, set a |
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// translation for the current app locale. |
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return $this->setTranslation($key, $this->getLocale(), $value); |
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} |
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/** |
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* @param string $key |
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* @param string $locale |
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* @param bool $useFallbackLocale |
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* @return string |
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*/ |
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public function translate(string $key, string $locale = '', bool $useFallbackLocale = true): string |
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{ |
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return $this->getTranslation($key, $locale, $useFallbackLocale); |
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} |
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/** |
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* @param string $key |
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* @param string $locale |
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* @param bool $useFallbackLocale |
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* @return string |
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*/ |
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public function getTranslation(string $key, string $locale, bool $useFallbackLocale = true) |
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{ |
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$locale = $this->normalizeLocale($key, $locale, $useFallbackLocale); |
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$translations = $this->getTranslations($key); |
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$translation = $translations[$locale] ?? ''; |
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if ($this->hasGetMutator($key)) { |
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return $this->mutateAttribute($key, $translation); |
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} |
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return $translation; |
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} |
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/** |
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* @param string $key |
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* @param string $locale |
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* @return string |
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*/ |
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public function getTranslationWithFallback(string $key, string $locale): string |
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{ |
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return $this->getTranslation($key, $locale, true); |
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} |
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/** |
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* @param string $key |
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* @param string $locale |
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* @return string |
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*/ |
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public function getTranslationWithoutFallback(string $key, string $locale) |
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{ |
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return $this->getTranslation($key, $locale, false); |
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} |
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/** |
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* @param string|null $key |
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* @return array |
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*/ |
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public function getTranslations(string $key = null): array |
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{ |
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if ($key !== null) { |
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$this->guardAgainstNonTranslatableAttribute($key); |
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return array_filter(json_decode($this->getAttributes()[$key] ?? '' ?: '{}', true) ?: [], function ($value) { |
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return $value !== null && $value !== ''; |
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}); |
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} |
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return array_reduce($this->getTranslatableAttributes(), function ($result, $item) { |
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$result[$item] = $this->getTranslations($item); |
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return $result; |
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}); |
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} |
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/** |
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* @param string $key |
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* @param string $locale |
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* @param $value |
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* @return HasTranslations |
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*/ |
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public function setTranslation(string $key, string $locale, $value): self |
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{ |
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$this->guardAgainstNonTranslatableAttribute($key); |
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$translations = $this->getTranslations($key); |
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$oldValue = $translations[$locale] ?? ''; |
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if ($this->hasSetMutator($key)) { |
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$method = 'set' . Str::studly($key) . 'Attribute'; |
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$this->{$method}($value, $locale); |
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$value = $this->attributes[$key]; |
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} |
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$translations[$locale] = $value; |
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$this->attributes[$key] = $this->asJson($translations); |
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event(new TranslationHasBeenSet($this, $key, $locale, $oldValue, $value)); |
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return $this; |
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} |
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/** |
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* @param string $key |
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* @param array $translations |
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* @return HasTranslations |
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*/ |
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public function setTranslations(string $key, array $translations): self |
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{ |
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$this->guardAgainstNonTranslatableAttribute($key); |
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foreach ($translations as $locale => $translation) { |
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$this->setTranslation($key, $locale, $translation); |
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} |
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return $this; |
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} |
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/** |
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* @param string $key |
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* @param string $locale |
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* @return HasTranslations |
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*/ |
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public function forgetTranslation(string $key, string $locale): self |
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{ |
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$translations = $this->getTranslations($key); |
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unset($translations[$locale]); |
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$this->setAttribute($key, $translations); |
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return $this; |
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} |
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/** |
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* @param string $locale |
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* @return HasTranslations |
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*/ |
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public function forgetAllTranslations(string $locale): self |
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{ |
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collect($this->getTranslatableAttributes())->each(function (string $attribute) use ($locale) { |
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$this->forgetTranslation($attribute, $locale); |
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}); |
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return $this; |
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} |
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/** |
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* @param string $key |
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* @return array |
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*/ |
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public function getTranslatedLocales(string $key): array |
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{ |
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return array_keys($this->getTranslations($key)); |
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} |
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/** |
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* @param string $key |
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* @return bool |
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*/ |
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public function isTranslatableAttribute(string $key): bool |
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{ |
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return in_array($key, $this->getTranslatableAttributes()); |
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} |
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/** |
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* @param string $key |
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* @param string|null $locale |
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* @return bool |
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*/ |
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public function hasTranslation(string $key, string $locale = null): bool |
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{ |
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$locale = $locale ?: $this->getLocale(); |
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return isset($this->getTranslations($key)[$locale]); |
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} |
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/** |
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* @param string $key |
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*/ |
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protected function guardAgainstNonTranslatableAttribute(string $key) |
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{ |
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if (!$this->isTranslatableAttribute($key)) { |
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throw AttributeIsNotTranslatable::make($key, $this); |
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} |
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} |
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/** |
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* @param string $key |
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* @param string $locale |
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* @param bool $useFallbackLocale |
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* @return string |
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*/ |
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protected function normalizeLocale(string $key, string $locale, bool $useFallbackLocale): string |
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{ |
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if (in_array($locale, $this->getTranslatedLocales($key))) { |
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return $locale; |
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} |
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if (!$useFallbackLocale) { |
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return $locale; |
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} |
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if (!is_null($fallbackLocale = Config::get('translatable.fallback_locale'))) { |
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return $fallbackLocale; |
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} |
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if (!is_null($fallbackLocale = Config::get('app.fallback_locale'))) { |
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return $fallbackLocale; |
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} |
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return $locale; |
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} |
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/** |
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* @return string |
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*/ |
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protected function getLocale(): string |
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{ |
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return Config::get('app.locale'); |
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} |
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/** |
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* @return array |
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*/ |
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public function getTranslatableAttributes(): array |
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{ |
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return is_array($this->translatable) |
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? $this->translatable |
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: []; |
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} |
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/** |
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* @return array |
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*/ |
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public function getTranslationsAttribute(): array |
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{ |
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return collect($this->getTranslatableAttributes()) |
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->mapWithKeys(function (string $key) { |
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return [$key => $this->getTranslations($key)]; |
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}) |
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->toArray(); |
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} |
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/** |
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* @return array |
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*/ |
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public function getCasts(): array |
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{ |
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return array_merge( |
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parent::getCasts(), |
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array_fill_keys($this->getTranslatableAttributes(), 'array') |
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); |
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} |
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} |
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In PHP traits cannot be used for type-hinting as they do not define a well-defined structure. This is because any class that uses a trait can rename that trait’s methods.
If you would like to return an object that has a guaranteed set of methods, you could create a companion interface that lists these methods explicitly.