dimsav /
laravel-translatable
Complex classes like Translatable often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Translatable, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 23 | trait Translatable |
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| 24 | { |
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| 25 | protected static $autoloadTranslations = null; |
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| 26 | |||
| 27 | protected $defaultLocale; |
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| 28 | |||
| 29 | 480 | public static function bootTranslatable(): void |
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| 30 | { |
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| 31 | static::saved(function (Model $model) { |
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| 32 | /* @var Translatable $model */ |
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| 33 | 480 | return $model->saveTranslations(); |
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| 34 | 480 | }); |
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| 35 | 480 | } |
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| 36 | |||
| 37 | 52 | public function translate(?string $locale = null, bool $withFallback = false): ?Model |
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| 38 | { |
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| 39 | 52 | return $this->getTranslation($locale, $withFallback); |
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| 40 | } |
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| 41 | |||
| 42 | 4 | public function translateOrDefault(?string $locale = null): ?Model |
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| 46 | |||
| 47 | 4 | public function translateOrNew(?string $locale = null): Model |
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| 48 | { |
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| 49 | 4 | return $this->getTranslationOrNew($locale); |
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| 50 | } |
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| 51 | |||
| 52 | 252 | public function getTranslation(?string $locale = null, bool $withFallback = null): ?Model |
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| 53 | { |
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| 54 | 252 | $configFallbackLocale = $this->getFallbackLocale(); |
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| 55 | 252 | $locale = $locale ?: $this->locale(); |
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| 56 | 252 | $withFallback = $withFallback === null ? $this->useFallback() : $withFallback; |
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| 57 | 252 | $fallbackLocale = $this->getFallbackLocale($locale); |
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| 58 | |||
| 59 | 252 | if ($translation = $this->getTranslationByLocaleKey($locale)) { |
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| 60 | 144 | return $translation; |
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| 61 | } |
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| 62 | 172 | if ($withFallback && $fallbackLocale) { |
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| 63 | 28 | if ($translation = $this->getTranslationByLocaleKey($fallbackLocale)) { |
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| 64 | 16 | return $translation; |
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| 65 | } |
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| 66 | 12 | if ($fallbackLocale !== $configFallbackLocale && $translation = $this->getTranslationByLocaleKey($configFallbackLocale)) { |
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| 67 | 8 | return $translation; |
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| 68 | } |
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| 69 | } |
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| 70 | |||
| 71 | 168 | return null; |
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| 72 | } |
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| 73 | |||
| 74 | 12 | public function hasTranslation(?string $locale = null): bool |
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| 86 | |||
| 87 | 316 | public function getTranslationModelName(): string |
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| 88 | { |
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| 89 | 316 | return $this->translationModel ?: $this->getTranslationModelNameDefault(); |
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| 90 | } |
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| 91 | |||
| 92 | 304 | public function getTranslationModelNameDefault(): string |
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| 93 | { |
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| 94 | 304 | $modelName = get_class($this); |
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| 95 | |||
| 96 | 304 | if ($namespace = $this->getTranslationModelNamespace()) { |
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| 97 | 4 | $modelName = $namespace.'\\'.class_basename(get_class($this)); |
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| 98 | } |
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| 99 | |||
| 100 | 304 | return $modelName.config('translatable.translation_suffix', 'Translation'); |
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| 101 | } |
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| 102 | |||
| 103 | 304 | public function getTranslationModelNamespace(): ?string |
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| 104 | { |
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| 105 | 304 | return config('translatable.translation_model_namespace'); |
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| 106 | } |
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| 107 | |||
| 108 | 316 | public function getRelationKey(): string |
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| 116 | |||
| 117 | 296 | public function getLocaleKey(): string |
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| 118 | { |
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| 119 | 296 | return $this->localeKey ?: config('translatable.locale_key', 'locale'); |
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| 120 | } |
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| 121 | |||
| 122 | 296 | public function translations(): HasMany |
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| 123 | { |
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| 124 | 296 | return $this->hasMany($this->getTranslationModelName(), $this->getRelationKey()); |
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| 125 | } |
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| 126 | |||
| 127 | 16 | private function usePropertyFallback(): bool |
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| 128 | { |
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| 129 | 16 | return $this->useFallback() && config('translatable.use_property_fallback', false); |
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| 130 | } |
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| 131 | |||
| 132 | 96 | private function getAttributeOrFallback(?string $locale, string $attribute) |
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| 133 | { |
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| 134 | 96 | $translation = $this->getTranslation($locale); |
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| 135 | |||
| 136 | if ( |
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| 137 | ( |
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| 138 | 96 | ! $translation instanceof Model |
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| 139 | 96 | || $this->isEmptyTranslatableAttribute($attribute, $translation->$attribute) |
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| 140 | ) |
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| 141 | 96 | && $this->usePropertyFallback() |
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| 142 | ) { |
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| 143 | 12 | $translation = $this->getTranslation($this->getFallbackLocale(), false); |
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| 144 | } |
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| 145 | |||
| 146 | 96 | if ($translation instanceof Model) { |
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| 147 | 92 | return $translation->$attribute; |
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| 148 | } |
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| 149 | |||
| 150 | 8 | return null; |
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| 151 | } |
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| 152 | |||
| 153 | 88 | protected function isEmptyTranslatableAttribute(string $key, $value): bool |
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| 157 | |||
| 158 | 480 | public function getAttribute($key) |
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| 159 | { |
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| 160 | 480 | [$attribute, $locale] = $this->getAttributeAndLocale($key); |
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| 161 | |||
| 162 | 480 | if ($this->isTranslationAttribute($attribute)) { |
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| 163 | 76 | if ($this->getTranslation($locale) === null) { |
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| 164 | 12 | return $this->getAttributeValue($attribute); |
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| 165 | } |
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| 166 | |||
| 167 | // If the given $attribute has a mutator, we push it to $attributes and then call getAttributeValue |
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| 168 | // on it. This way, we can use Eloquent's checking for Mutation, type casting, and |
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| 169 | // Date fields. |
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| 170 | 64 | if ($this->hasGetMutator($attribute)) { |
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| 171 | 4 | $this->attributes[$attribute] = $this->getAttributeOrFallback($locale, $attribute); |
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| 172 | |||
| 173 | 4 | return $this->getAttributeValue($attribute); |
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| 174 | } |
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| 175 | |||
| 176 | 60 | return $this->getAttributeOrFallback($locale, $attribute); |
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| 177 | } |
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| 178 | |||
| 179 | 480 | return parent::getAttribute($key); |
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| 180 | } |
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| 181 | |||
| 182 | 480 | public function setAttribute($key, $value) |
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| 183 | { |
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| 184 | 480 | [$attribute, $locale] = $this->getAttributeAndLocale($key); |
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| 185 | |||
| 186 | 480 | if ($this->isTranslationAttribute($attribute)) { |
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| 187 | 40 | $this->getTranslationOrNew($locale)->$attribute = $value; |
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| 188 | } else { |
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| 189 | 480 | return parent::setAttribute($key, $value); |
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| 190 | } |
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| 191 | |||
| 192 | 40 | return $this; |
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| 193 | } |
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| 194 | |||
| 195 | 144 | protected function getTranslationOrNew(?string $locale = null): Model |
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| 196 | { |
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| 197 | 144 | $locale = $locale ?: $this->locale(); |
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| 198 | |||
| 199 | 144 | if (($translation = $this->getTranslation($locale, false)) === null) { |
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| 200 | 128 | $translation = $this->getNewTranslation($locale); |
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| 201 | } |
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| 202 | |||
| 203 | 144 | return $translation; |
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| 204 | } |
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| 205 | |||
| 206 | 480 | public function fill(array $attributes) |
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| 207 | { |
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| 208 | 480 | foreach ($attributes as $key => $values) { |
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| 209 | 112 | if ($this->isKeyALocale($key)) { |
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| 210 | 52 | $this->getTranslationOrNew($key)->fill($values); |
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| 211 | 44 | unset($attributes[$key]); |
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| 212 | } else { |
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| 213 | 104 | [$attribute, $locale] = $this->getAttributeAndLocale($key); |
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| 214 | 104 | if ($this->isTranslationAttribute($attribute) and $this->isKeyALocale($locale)) { |
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| 215 | 48 | $this->getTranslationOrNew($locale)->fill([$attribute => $values]); |
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| 216 | 48 | unset($attributes[$key]); |
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| 217 | } |
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| 218 | } |
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| 219 | } |
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| 220 | |||
| 221 | 480 | return parent::fill($attributes); |
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| 222 | } |
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| 223 | |||
| 224 | 252 | private function getTranslationByLocaleKey(string $key): ?Model |
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| 234 | |||
| 235 | 256 | private function getFallbackLocale(?string $locale = null): ?string |
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| 236 | { |
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| 237 | 256 | if ($locale && $this->isLocaleCountryBased($locale)) { |
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| 238 | 28 | if ($fallback = $this->getLanguageFromCountryBasedLocale($locale)) { |
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| 239 | 28 | return $fallback; |
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| 240 | } |
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| 241 | } |
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| 242 | |||
| 243 | 256 | return config('translatable.fallback_locale'); |
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| 244 | } |
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| 245 | |||
| 246 | 252 | private function isLocaleCountryBased(string $locale): bool |
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| 247 | { |
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| 248 | 252 | return $this->getLocalesHelper()->isLocaleCountryBased($locale); |
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| 249 | } |
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| 250 | |||
| 251 | 28 | private function getLanguageFromCountryBasedLocale(string $locale): string |
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| 255 | |||
| 256 | 148 | private function useFallback(): bool |
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| 257 | { |
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| 258 | 148 | if (isset($this->useTranslationFallback) && $this->useTranslationFallback !== null) { |
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| 259 | 12 | return $this->useTranslationFallback; |
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| 260 | } |
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| 261 | |||
| 262 | 136 | return (bool) config('translatable.use_fallback'); |
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| 263 | } |
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| 264 | |||
| 265 | 480 | public function isTranslationAttribute(string $key): bool |
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| 269 | |||
| 270 | 112 | protected function isKeyALocale(string $key): bool |
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| 274 | |||
| 275 | protected function getLocales(): array |
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| 276 | { |
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| 277 | return $this->getLocalesHelper()->all(); |
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| 278 | } |
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| 279 | |||
| 280 | protected function getLocaleSeparator(): string |
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| 281 | { |
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| 282 | return $this->getLocalesHelper()->getLocaleSeparator(); |
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| 283 | } |
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| 284 | |||
| 285 | 480 | protected function saveTranslations(): bool |
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| 286 | { |
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| 287 | 480 | $saved = true; |
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| 288 | |||
| 289 | 480 | if (! $this->relationLoaded('translations')) { |
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| 290 | 480 | return $saved; |
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| 291 | } |
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| 292 | |||
| 293 | 104 | foreach ($this->translations as $translation) { |
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| 294 | 104 | if ($saved && $this->isTranslationDirty($translation)) { |
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| 295 | 104 | if (! empty($connectionName = $this->getConnectionName())) { |
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| 296 | 104 | $translation->setConnection($connectionName); |
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| 297 | } |
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| 298 | |||
| 299 | 104 | $translation->setAttribute($this->getRelationKey(), $this->getKey()); |
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| 300 | 104 | $saved = $translation->save(); |
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| 301 | } |
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| 302 | } |
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| 303 | |||
| 304 | 100 | return $saved; |
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| 305 | } |
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| 306 | |||
| 307 | 4 | public function replicateWithTranslations(array $except = null): Model |
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| 308 | { |
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| 309 | 4 | $newInstance = parent::replicate($except); |
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| 310 | |||
| 311 | 4 | unset($newInstance->translations); |
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| 312 | 4 | foreach ($this->translations as $translation) { |
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| 313 | 4 | $newTranslation = $translation->replicate(); |
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| 314 | 4 | $newInstance->translations->add($newTranslation); |
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| 315 | } |
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| 316 | |||
| 317 | 4 | return $newInstance; |
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| 318 | } |
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| 319 | |||
| 320 | 104 | protected function isTranslationDirty(Model $translation): bool |
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| 321 | { |
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| 322 | 104 | $dirtyAttributes = $translation->getDirty(); |
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| 323 | 104 | unset($dirtyAttributes[$this->getLocaleKey()]); |
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| 324 | |||
| 325 | 104 | return count($dirtyAttributes) > 0; |
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| 326 | } |
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| 327 | |||
| 328 | 132 | public function getNewTranslation(string $locale): Model |
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| 329 | { |
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| 330 | 132 | $modelName = $this->getTranslationModelName(); |
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| 331 | 132 | $translation = new $modelName(); |
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| 332 | 132 | $translation->setAttribute($this->getLocaleKey(), $locale); |
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| 333 | 132 | $this->translations->add($translation); |
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| 334 | |||
| 335 | 132 | return $translation; |
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| 336 | } |
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| 337 | |||
| 338 | 152 | public function __isset($key) |
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| 342 | |||
| 343 | 8 | public function scopeTranslatedIn(Builder $query, ?string $locale = null) |
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| 351 | |||
| 352 | 8 | public function scopeNotTranslatedIn(Builder $query, ?string $locale = null) |
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| 353 | { |
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| 354 | 8 | $locale = $locale ?: $this->locale(); |
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| 355 | |||
| 356 | return $query->whereDoesntHave('translations', function (Builder $q) use ($locale) { |
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| 357 | 8 | $q->where($this->getLocaleKey(), '=', $locale); |
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| 358 | 8 | }); |
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| 359 | } |
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| 360 | |||
| 361 | 4 | public function scopeTranslated(Builder $query) |
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| 362 | { |
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| 363 | 4 | return $query->has('translations'); |
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| 364 | } |
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| 365 | |||
| 366 | 12 | public function scopeListsTranslations(Builder $query, string $translationField) |
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| 367 | { |
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| 368 | 12 | $withFallback = $this->useFallback(); |
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| 369 | 12 | $translationTable = $this->getTranslationsTable(); |
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| 370 | 12 | $localeKey = $this->getLocaleKey(); |
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| 371 | |||
| 372 | $query |
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| 373 | 12 | ->select($this->getTable().'.'.$this->getKeyName(), $translationTable.'.'.$translationField) |
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| 374 | 12 | ->leftJoin($translationTable, $translationTable.'.'.$this->getRelationKey(), '=', $this->getTable().'.'.$this->getKeyName()) |
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| 375 | 12 | ->where($translationTable.'.'.$localeKey, $this->locale()); |
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| 376 | 12 | if ($withFallback) { |
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| 377 | $query->orWhere(function (Builder $q) use ($translationTable, $localeKey) { |
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| 378 | 4 | $q->where($translationTable.'.'.$localeKey, $this->getFallbackLocale()) |
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| 379 | ->whereNotIn($translationTable.'.'.$this->getRelationKey(), function (QueryBuilder $q) use ( |
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| 380 | 4 | $translationTable, |
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| 381 | 4 | $localeKey |
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| 382 | ) { |
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| 383 | 4 | $q->select($translationTable.'.'.$this->getRelationKey()) |
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| 384 | 4 | ->from($translationTable) |
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| 385 | 4 | ->where($translationTable.'.'.$localeKey, $this->locale()); |
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| 386 | 4 | }); |
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| 387 | 4 | }); |
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| 388 | } |
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| 389 | 12 | } |
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| 390 | |||
| 391 | 12 | public function scopeWithTranslation(Builder $query) |
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| 392 | { |
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| 393 | 12 | $query->with([ |
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| 394 | 'translations' => function (Relation $query) { |
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| 395 | 12 | if ($this->useFallback()) { |
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| 396 | 8 | $locale = $this->locale(); |
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| 397 | 8 | $countryFallbackLocale = $this->getFallbackLocale($locale); // e.g. de-DE => de |
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| 398 | 8 | $locales = array_unique([$locale, $countryFallbackLocale, $this->getFallbackLocale()]); |
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| 399 | |||
| 400 | 8 | return $query->whereIn($this->getTranslationsTable().'.'.$this->getLocaleKey(), $locales); |
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| 401 | } |
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| 402 | |||
| 403 | 4 | return $query->where($this->getTranslationsTable().'.'.$this->getLocaleKey(), $this->locale()); |
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| 404 | 12 | }, |
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| 405 | ]); |
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| 406 | 12 | } |
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| 407 | |||
| 408 | 12 | public function scopeWhereTranslation(Builder $query, string $translationField, $value, ?string $locale = null) |
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| 409 | { |
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| 410 | return $query->whereHas('translations', function (Builder $query) use ($translationField, $value, $locale) { |
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| 411 | 12 | $query->where($this->getTranslationsTable().'.'.$translationField, $value); |
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| 412 | 12 | if ($locale) { |
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| 413 | 4 | $query->where($this->getTranslationsTable().'.'.$this->getLocaleKey(), $locale); |
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| 414 | } |
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| 415 | 12 | }); |
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| 416 | } |
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| 417 | |||
| 418 | 4 | public function scopeOrWhereTranslation(Builder $query, string $translationField, $value, ?string $locale = null) |
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| 419 | { |
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| 420 | return $query->orWhereHas('translations', function (Builder $query) use ($translationField, $value, $locale) { |
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| 421 | 4 | $query->where($this->getTranslationsTable().'.'.$translationField, $value); |
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| 422 | 4 | if ($locale) { |
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| 423 | $query->where($this->getTranslationsTable().'.'.$this->getLocaleKey(), $locale); |
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| 424 | } |
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| 425 | 4 | }); |
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| 426 | } |
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| 427 | |||
| 428 | 12 | public function scopeWhereTranslationLike(Builder $query, string $translationField, $value, ?string $locale = null) |
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| 429 | { |
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| 430 | return $query->whereHas('translations', function (Builder $query) use ($translationField, $value, $locale) { |
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| 431 | 12 | $query->where($this->getTranslationsTable().'.'.$translationField, 'LIKE', $value); |
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| 432 | 12 | if ($locale) { |
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| 433 | 4 | $query->where($this->getTranslationsTable().'.'.$this->getLocaleKey(), 'LIKE', $locale); |
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| 434 | } |
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| 435 | 12 | }); |
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| 436 | } |
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| 437 | |||
| 438 | 4 | public function scopeOrWhereTranslationLike(Builder $query, string $translationField, $value, ?string $locale = null) |
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| 439 | { |
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| 440 | return $query->orWhereHas('translations', function (Builder $query) use ($translationField, $value, $locale) { |
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| 441 | 4 | $query->where($this->getTranslationsTable().'.'.$translationField, 'LIKE', $value); |
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| 442 | 4 | if ($locale) { |
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| 443 | $query->where($this->getTranslationsTable().'.'.$this->getLocaleKey(), 'LIKE', $locale); |
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| 444 | } |
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| 445 | 4 | }); |
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| 446 | } |
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| 447 | |||
| 448 | 8 | public function scopeOrderByTranslation(Builder $query, string $translationField, string $sortMethod = 'asc') |
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| 449 | { |
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| 450 | 8 | $translationTable = $this->getTranslationsTable(); |
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| 451 | 8 | $localeKey = $this->getLocaleKey(); |
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| 452 | 8 | $table = $this->getTable(); |
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| 453 | 8 | $keyName = $this->getKeyName(); |
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| 454 | |||
| 455 | return $query |
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| 456 | ->join($translationTable, function (JoinClause $join) use ($translationTable, $localeKey, $table, $keyName) { |
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| 457 | $join |
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| 458 | 8 | ->on($translationTable.'.'.$this->getRelationKey(), '=', $table.'.'.$keyName) |
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| 459 | 8 | ->where($translationTable.'.'.$localeKey, $this->locale()); |
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| 460 | 8 | }) |
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| 461 | 8 | ->orderBy($translationTable.'.'.$translationField, $sortMethod) |
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| 462 | 8 | ->select($table.'.*') |
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| 463 | 8 | ->with('translations'); |
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| 464 | } |
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| 465 | |||
| 466 | 48 | public function attributesToArray() |
|
| 467 | { |
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| 468 | 48 | $attributes = parent::attributesToArray(); |
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| 469 | |||
| 470 | if ( |
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| 471 | 48 | (! $this->relationLoaded('translations') && ! $this->toArrayAlwaysLoadsTranslations() && is_null(self::$autoloadTranslations)) |
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| 472 | 48 | || self::$autoloadTranslations === false |
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| 473 | ) { |
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| 474 | 16 | return $attributes; |
|
| 475 | } |
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| 476 | |||
| 477 | 32 | $hiddenAttributes = $this->getHidden(); |
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| 478 | |||
| 479 | 32 | foreach ($this->translatedAttributes as $field) { |
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| 480 | 32 | if (in_array($field, $hiddenAttributes)) { |
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| 481 | 4 | continue; |
|
| 482 | } |
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| 483 | |||
| 484 | 32 | $attributes[$field] = $this->getAttributeOrFallback(null, $field); |
|
| 485 | } |
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| 486 | |||
| 487 | 32 | return $attributes; |
|
| 488 | } |
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| 489 | |||
| 490 | 4 | public function getTranslationsArray(): array |
|
| 502 | |||
| 503 | 56 | private function getTranslationsTable(): string |
|
| 507 | |||
| 508 | 480 | protected function locale(): string |
|
| 509 | { |
||
| 510 | 480 | if ($this->defaultLocale) { |
|
| 511 | 4 | return $this->defaultLocale; |
|
| 512 | } |
||
| 513 | |||
| 514 | 480 | return $this->getLocalesHelper()->current(); |
|
| 515 | } |
||
| 516 | |||
| 517 | 4 | public function setDefaultLocale(?string $locale) |
|
| 523 | |||
| 524 | public function getDefaultLocale(): ?string |
||
| 525 | { |
||
| 526 | return $this->defaultLocale; |
||
| 527 | } |
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| 528 | |||
| 529 | /** |
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| 530 | * @param string|array|null $locales The locales to be deleted |
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| 531 | */ |
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| 532 | 12 | public function deleteTranslations($locales = null) |
|
| 533 | { |
||
| 534 | 12 | if ($locales === null) { |
|
| 535 | 4 | $translations = $this->translations()->get(); |
|
| 536 | } else { |
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| 537 | 8 | $locales = (array) $locales; |
|
| 538 | 8 | $translations = $this->translations()->whereIn($this->getLocaleKey(), $locales)->get(); |
|
| 539 | } |
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| 540 | 12 | foreach ($translations as $translation) { |
|
| 541 | 8 | $translation->delete(); |
|
| 542 | } |
||
| 543 | |||
| 544 | // we need to manually "reload" the collection built from the relationship |
||
| 545 | // otherwise $this->translations()->get() would NOT be the same as $this->translations |
||
| 546 | 12 | $this->load('translations'); |
|
| 547 | 12 | } |
|
| 548 | |||
| 549 | 480 | private function getAttributeAndLocale(string $key): array |
|
| 550 | { |
||
| 551 | 480 | if (Str::contains($key, ':')) { |
|
| 552 | 44 | return explode(':', $key); |
|
| 553 | } |
||
| 554 | |||
| 555 | 480 | return [$key, $this->locale()]; |
|
| 556 | } |
||
| 557 | |||
| 558 | 32 | private function toArrayAlwaysLoadsTranslations(): bool |
|
| 562 | |||
| 563 | public static function enableAutoloadTranslations(): void |
||
| 564 | { |
||
| 565 | self::$autoloadTranslations = true; |
||
| 566 | } |
||
| 567 | |||
| 568 | 4 | public static function defaultAutoloadTranslations(): void |
|
| 569 | { |
||
| 570 | 4 | self::$autoloadTranslations = null; |
|
| 571 | 4 | } |
|
| 572 | |||
| 573 | 4 | public static function disableAutoloadTranslations(): void |
|
| 574 | { |
||
| 575 | 4 | self::$autoloadTranslations = false; |
|
| 576 | 4 | } |
|
| 577 | |||
| 578 | 480 | protected function getLocalesHelper(): Locales |
|
| 582 | } |
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| 583 |
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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.