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<?php |
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namespace LaTevaWeb\Translatable\Traits; |
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use Illuminate\Database\Eloquent\Relations\MorphToMany; |
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use Illuminate\Support\Collection; |
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use Illuminate\Support\Facades\Config; |
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use LaTevaWeb\Translatable\Events\TranslationHasBeenSet; |
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use LaTevaWeb\Translatable\Exceptions\AttributeIsNotTranslatable; |
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trait Translatable |
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{ |
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public static function create(array $attributes = []) |
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{ |
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$translatables = []; |
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foreach($attributes as $field => $values) { |
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if( in_array($field, self::$translatable) ) { |
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$translatables[$field] = $values; |
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unset($attributes[$field]); |
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} |
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} |
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$model = static::query()->create($attributes); |
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foreach($translatables as $field => $values) { |
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foreach($values as $locale => $value) { |
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$model->setTranslation($field, $locale, $value); |
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} |
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} |
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$model->save(); |
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return $model; |
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} |
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public function getAttributeValue($field) |
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{ |
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if (! $this->isTranslatableAttribute($field)) { |
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return parent::getAttributeValue($field); |
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} |
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return $this->getTranslation($field, $this->getLocale()); |
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} |
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public function setAttribute($field, $value) |
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{ |
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if (! $this->isTranslatableAttribute($field) || is_array($value)) { |
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return parent::setAttribute($field, $value); |
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} |
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return $this->setTranslation($field, $this->getLocale(), $value); |
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} |
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public function isTranslatableAttribute(string $field) : bool |
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{ |
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return in_array($field, $this->getTranslatableAttributes()); |
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} |
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protected function getLocale() : string |
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{ |
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return Config::get('app.locale'); |
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} |
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public function getTranslatableAttributes(): array |
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{ |
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return is_array(self::$translatable) ? self::$translatable : []; |
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} |
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public function getTranslation(string $field, string $locale, bool $useFallbackLocale = true): ?string |
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{ |
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$locale = $this->normalizeLocale($field, $locale, $useFallbackLocale); |
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$translations = $this->getTranslations($field)->all(); |
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$translation = $translations[$locale] ?? ''; |
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if ($this->hasGetMutator($field)) { |
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return $this->mutateAttribute($field, $translation); |
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} |
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return $translation; |
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} |
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public function setTranslation(string $field, string $locale, $content): self |
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{ |
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$this->guardAgainstNonTranslatableAttribute($field); |
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$translation = $this->translations() |
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->where('field', $field) |
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->where('locale', $locale) |
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->first(); |
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if(!empty($translation)) { |
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$translation->content = $content; |
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$translation->save(); |
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} else { |
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$this->translations()->create([ |
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'field' => $field, |
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'locale' => $locale, |
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'content' => $content |
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]); |
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} |
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return $this; |
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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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public function translations(): MorphToMany |
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{ |
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return $this->morphToMany(config('translatable.models.translation'), 'translatable'); |
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} |
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protected function normalizeLocale(string $field, string $locale, bool $useFallbackLocale) : string |
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{ |
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if (in_array($locale, $this->getTranslatedLocales($field)->all())) { |
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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('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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* Returns a collection with all locales [ locales ] |
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* |
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* @param string $field |
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* @return Collection |
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*/ |
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public function getTranslatedLocales(string $field): Collection |
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{ |
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return $this->getTranslations($field)->keys(); |
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} |
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/** |
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* Returns a collection with [ locale => content ] |
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* |
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* @param string|null $field |
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* @return Collection |
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*/ |
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public function getTranslations(string $field = null): Collection |
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{ |
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return $this->translations() |
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->where('field', $field) |
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->select('locale', 'content') |
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->get() |
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->keyBy('locale') |
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->pluck('content', 'locale'); |
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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
Idableprovides a methodequalsIdthat 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.