dimsav /
laravel-translatable
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
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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| 12 | trait Translatable |
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| 13 | { |
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| 14 | protected $defaultLocale; |
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| 15 | |||
| 16 | /** |
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| 17 | * Alias for getTranslation(). |
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| 18 | * |
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| 19 | * @param string|null $locale |
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| 20 | * @param bool $withFallback |
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| 21 | * |
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| 22 | * @return \Illuminate\Database\Eloquent\Model|null |
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| 23 | */ |
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| 24 | public function translate($locale = null, $withFallback = false) |
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| 25 | { |
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| 26 | return $this->getTranslation($locale, $withFallback); |
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| 27 | } |
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| 28 | |||
| 29 | /** |
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| 30 | * Alias for getTranslation(). |
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| 31 | * |
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| 32 | * @param string $locale |
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| 33 | * |
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| 34 | * @return \Illuminate\Database\Eloquent\Model|null |
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| 35 | */ |
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| 36 | public function translateOrDefault($locale) |
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| 40 | |||
| 41 | /** |
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| 42 | * Alias for getTranslationOrNew(). |
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| 43 | * |
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| 44 | * @param string $locale |
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| 45 | * |
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| 46 | * @return \Illuminate\Database\Eloquent\Model|null |
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| 47 | */ |
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| 48 | public function translateOrNew($locale) |
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| 52 | |||
| 53 | /** |
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| 54 | * @param string|null $locale |
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| 55 | * @param bool $withFallback |
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| 56 | * |
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| 57 | * @return \Illuminate\Database\Eloquent\Model|null |
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| 58 | */ |
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| 59 | public function getTranslation($locale = null, $withFallback = null) |
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| 60 | { |
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| 61 | $configFallbackLocale = $this->getFallbackLocale(); |
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| 62 | $locale = $locale ?: $this->locale(); |
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| 63 | $withFallback = $withFallback === null ? $this->useFallback() : $withFallback; |
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| 64 | $fallbackLocale = $this->getFallbackLocale($locale); |
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| 65 | |||
| 66 | if ($translation = $this->getTranslationByLocaleKey($locale)) { |
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| 67 | return $translation; |
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| 68 | } |
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| 69 | if ($withFallback && $fallbackLocale) { |
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| 70 | if ($translation = $this->getTranslationByLocaleKey($fallbackLocale)) { |
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| 71 | return $translation; |
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| 72 | } |
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| 73 | if ($translation = $this->getTranslationByLocaleKey($configFallbackLocale)) { |
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| 74 | return $translation; |
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| 75 | } |
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| 76 | } |
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| 77 | |||
| 78 | return null; |
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| 79 | } |
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| 80 | |||
| 81 | /** |
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| 82 | * @param string|null $locale |
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| 83 | * |
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| 84 | * @return bool |
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| 85 | */ |
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| 86 | public function hasTranslation($locale = null) |
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| 87 | { |
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| 88 | $locale = $locale ?: $this->locale(); |
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| 89 | |||
| 90 | foreach ($this->translations as $translation) { |
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| 91 | if ($translation->getAttribute($this->getLocaleKey()) == $locale) { |
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| 92 | return true; |
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| 93 | } |
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| 94 | } |
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| 95 | |||
| 96 | return false; |
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| 97 | } |
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| 98 | |||
| 99 | /** |
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| 100 | * @return string |
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| 101 | */ |
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| 102 | public function getTranslationModelName() |
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| 106 | |||
| 107 | /** |
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| 108 | * @return string |
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| 109 | */ |
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| 110 | public function getTranslationModelNameDefault() |
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| 111 | { |
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| 112 | return get_class($this).config('translatable.translation_suffix', 'Translation'); |
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| 113 | } |
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| 114 | |||
| 115 | /** |
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| 116 | * @return string |
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| 117 | */ |
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| 118 | public function getRelationKey() |
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| 130 | |||
| 131 | /** |
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| 132 | * @return string |
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| 133 | */ |
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| 134 | public function getLocaleKey() |
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| 135 | { |
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| 136 | return $this->localeKey ?: config('translatable.locale_key', 'locale'); |
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| 137 | } |
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| 138 | |||
| 139 | /** |
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| 140 | * @return \Illuminate\Database\Eloquent\Relations\HasMany |
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| 141 | */ |
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| 142 | public function translations() |
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| 143 | { |
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| 144 | return $this->hasMany($this->getTranslationModelName(), $this->getRelationKey()); |
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| 145 | } |
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| 146 | |||
| 147 | /** |
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| 148 | * @return bool |
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| 149 | */ |
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| 150 | private function usePropertyFallback() |
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| 151 | { |
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| 152 | return config('translatable.use_property_fallback', false); |
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| 153 | } |
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| 154 | |||
| 155 | /** |
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| 156 | * Returns the attribute value from fallback translation if value of attribute |
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| 157 | * is empty and the property fallback is enabled in the configuration. |
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| 158 | * in model. |
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| 159 | * @param $locale |
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| 160 | * @param $attribute |
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| 161 | * @return mixed |
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| 162 | */ |
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| 163 | private function getAttributeOrFallback($locale, $attribute) |
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| 164 | { |
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| 165 | $value = $this->getTranslation($locale)->$attribute; |
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| 166 | |||
| 167 | $usePropertyFallback = $this->useFallback() && $this->usePropertyFallback(); |
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| 168 | if (empty($value) && $usePropertyFallback) { |
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| 169 | return $this->getTranslation($this->getFallbackLocale(), true)->$attribute; |
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| 170 | } |
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| 171 | |||
| 172 | return $value; |
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| 173 | } |
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| 174 | |||
| 175 | /** |
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| 176 | * @param string $key |
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| 177 | * |
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| 178 | * @return mixed |
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| 179 | */ |
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| 180 | public function getAttribute($key) |
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| 181 | { |
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| 182 | list($attribute, $locale) = $this->getAttributeAndLocale($key); |
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| 183 | |||
| 184 | if ($this->isTranslationAttribute($attribute)) { |
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| 185 | if ($this->getTranslation($locale) === null) { |
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| 186 | return null; |
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| 187 | } |
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| 188 | |||
| 189 | // If the given $attribute has a mutator, we push it to $attributes and then call getAttributeValue |
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| 190 | // on it. This way, we can use Eloquent's checking for Mutation, type casting, and |
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| 191 | // Date fields. |
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| 192 | if ($this->hasGetMutator($attribute)) { |
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| 193 | $this->attributes[$attribute] = $this->getAttributeOrFallback($locale, $attribute); |
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| 194 | |||
| 195 | return $this->getAttributeValue($attribute); |
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| 196 | } |
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| 197 | |||
| 198 | return $this->getAttributeOrFallback($locale, $attribute); |
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| 199 | } |
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| 200 | |||
| 201 | return parent::getAttribute($key); |
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| 202 | } |
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| 203 | |||
| 204 | /** |
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| 205 | * @param string $key |
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| 206 | * @param mixed $value |
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| 207 | * |
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| 208 | * @return $this |
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| 209 | */ |
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| 210 | public function setAttribute($key, $value) |
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| 211 | { |
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| 212 | list($attribute, $locale) = $this->getAttributeAndLocale($key); |
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| 213 | |||
| 214 | if ($this->isTranslationAttribute($attribute)) { |
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| 215 | $this->getTranslationOrNew($locale)->$attribute = $value; |
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| 216 | } else { |
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| 217 | return parent::setAttribute($key, $value); |
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| 218 | } |
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| 219 | |||
| 220 | return $this; |
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| 221 | } |
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| 222 | |||
| 223 | /** |
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| 224 | * @param array $options |
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| 225 | * |
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| 226 | * @return bool |
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| 227 | */ |
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| 228 | public function save(array $options = []) |
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| 229 | { |
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| 230 | if ($this->exists) { |
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| 231 | if (count($this->getDirty()) > 0) { |
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| 232 | // If $this->exists and dirty, parent::save() has to return true. If not, |
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| 233 | // an error has occurred. Therefore we shouldn't save the translations. |
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| 234 | if (parent::save($options)) { |
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| 235 | return $this->saveTranslations(); |
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| 236 | } |
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| 237 | |||
| 238 | return false; |
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| 239 | } else { |
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| 240 | // If $this->exists and not dirty, parent::save() skips saving and returns |
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| 241 | // false. So we have to save the translations |
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| 242 | if ($saved = $this->saveTranslations()) { |
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| 243 | $this->fireModelEvent('saved', false); |
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| 244 | $this->fireModelEvent('updated', false); |
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| 245 | } |
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| 246 | |||
| 247 | return $saved; |
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| 248 | } |
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| 249 | } elseif (parent::save($options)) { |
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| 250 | // We save the translations only if the instance is saved in the database. |
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| 251 | return $this->saveTranslations(); |
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| 252 | } |
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| 253 | |||
| 254 | return false; |
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| 255 | } |
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| 256 | |||
| 257 | /** |
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| 258 | * @param string $locale |
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| 259 | * |
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| 260 | * @return \Illuminate\Database\Eloquent\Model|null |
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| 261 | */ |
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| 262 | protected function getTranslationOrNew($locale) |
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| 263 | { |
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| 264 | if (($translation = $this->getTranslation($locale, false)) === null) { |
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| 265 | $translation = $this->getNewTranslation($locale); |
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| 266 | } |
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| 267 | |||
| 268 | return $translation; |
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| 269 | } |
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| 270 | |||
| 271 | /** |
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| 272 | * @param array $attributes |
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| 273 | * |
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| 274 | * @throws \Illuminate\Database\Eloquent\MassAssignmentException |
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| 275 | * @return $this |
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| 276 | */ |
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| 277 | public function fill(array $attributes) |
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| 278 | { |
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| 279 | foreach ($attributes as $key => $values) { |
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| 280 | if ($this->isKeyALocale($key)) { |
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| 281 | $this->getTranslationOrNew($key)->fill($values); |
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| 282 | unset($attributes[$key]); |
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| 283 | } else { |
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| 284 | list($attribute, $locale) = $this->getAttributeAndLocale($key); |
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| 285 | if ($this->isTranslationAttribute($attribute) and $this->isKeyALocale($locale)) { |
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| 286 | $this->getTranslationOrNew($locale)->fill([$attribute => $values]); |
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| 287 | unset($attributes[$key]); |
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| 288 | } |
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| 289 | } |
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| 290 | } |
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| 291 | |||
| 292 | return parent::fill($attributes); |
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| 293 | } |
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| 294 | |||
| 295 | /** |
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| 296 | * @param string $key |
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| 297 | */ |
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| 298 | private function getTranslationByLocaleKey($key) |
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| 299 | { |
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| 300 | foreach ($this->translations as $translation) { |
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| 301 | if ($translation->getAttribute($this->getLocaleKey()) == $key) { |
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| 302 | return $translation; |
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| 303 | } |
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| 304 | } |
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| 305 | |||
| 306 | return null; |
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| 307 | } |
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| 308 | |||
| 309 | /** |
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| 310 | * @param null $locale |
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| 311 | * |
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| 312 | * @return string |
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| 313 | */ |
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| 314 | private function getFallbackLocale($locale = null) |
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| 315 | { |
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| 316 | if ($locale && $this->isLocaleCountryBased($locale)) { |
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| 317 | if ($fallback = $this->getLanguageFromCountryBasedLocale($locale)) { |
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| 318 | return $fallback; |
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| 319 | } |
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| 320 | } |
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| 321 | |||
| 322 | return config('translatable.fallback_locale'); |
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| 323 | } |
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| 324 | |||
| 325 | /** |
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| 326 | * @param $locale |
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| 327 | * |
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| 328 | * @return bool |
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| 329 | */ |
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| 330 | private function isLocaleCountryBased($locale) |
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| 331 | { |
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| 332 | return strpos($locale, $this->getLocaleSeparator()) !== false; |
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| 333 | } |
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| 334 | |||
| 335 | /** |
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| 336 | * @param $locale |
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| 337 | * |
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| 338 | * @return string |
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| 339 | */ |
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| 340 | private function getLanguageFromCountryBasedLocale($locale) |
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| 341 | { |
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| 342 | $parts = explode($this->getLocaleSeparator(), $locale); |
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| 343 | |||
| 344 | return array_get($parts, 0); |
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| 345 | } |
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| 346 | |||
| 347 | /** |
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| 348 | * @return bool|null |
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| 349 | */ |
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| 350 | private function useFallback() |
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| 351 | { |
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| 352 | if (isset($this->useTranslationFallback) && $this->useTranslationFallback !== null) { |
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| 353 | return $this->useTranslationFallback; |
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| 354 | } |
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| 355 | |||
| 356 | return config('translatable.use_fallback'); |
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| 357 | } |
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| 358 | |||
| 359 | /** |
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| 360 | * @param string $key |
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| 361 | * |
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| 362 | * @return bool |
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| 363 | */ |
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| 364 | public function isTranslationAttribute($key) |
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| 365 | { |
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| 366 | return in_array($key, $this->translatedAttributes); |
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| 367 | } |
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| 368 | |||
| 369 | /** |
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| 370 | * @param string $key |
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| 371 | * |
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| 372 | * @throws \Dimsav\Translatable\Exception\LocalesNotDefinedException |
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| 373 | * @return bool |
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| 374 | */ |
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| 375 | protected function isKeyALocale($key) |
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| 376 | { |
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| 377 | $locales = $this->getLocales(); |
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| 378 | |||
| 379 | return in_array($key, $locales); |
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| 380 | } |
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| 381 | |||
| 382 | /** |
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| 383 | * @throws \Dimsav\Translatable\Exception\LocalesNotDefinedException |
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| 384 | * @return array |
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| 385 | */ |
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| 386 | protected function getLocales() |
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| 387 | { |
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| 388 | $localesConfig = (array) config('translatable.locales'); |
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| 389 | |||
| 390 | if (empty($localesConfig)) { |
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| 391 | throw new LocalesNotDefinedException('Please make sure you have run "php artisan config:publish dimsav/laravel-translatable" '. |
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| 392 | ' and that the locales configuration is defined.'); |
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| 393 | } |
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| 394 | |||
| 395 | $locales = []; |
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| 396 | foreach ($localesConfig as $key => $locale) { |
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| 397 | if (is_array($locale)) { |
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| 398 | $locales[] = $key; |
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| 399 | foreach ($locale as $countryLocale) { |
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| 400 | $locales[] = $key.$this->getLocaleSeparator().$countryLocale; |
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| 401 | } |
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| 402 | } else { |
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| 403 | $locales[] = $locale; |
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| 404 | } |
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| 405 | } |
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| 406 | |||
| 407 | return $locales; |
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| 408 | } |
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| 409 | |||
| 410 | /** |
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| 411 | * @return string |
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| 412 | */ |
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| 413 | protected function getLocaleSeparator() |
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| 414 | { |
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| 415 | return config('translatable.locale_separator', '-'); |
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| 416 | } |
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| 417 | |||
| 418 | /** |
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| 419 | * @return bool |
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| 420 | */ |
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| 421 | protected function saveTranslations() |
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| 422 | { |
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| 423 | $saved = true; |
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| 424 | foreach ($this->translations as $translation) { |
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| 425 | if ($saved && $this->isTranslationDirty($translation)) { |
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| 426 | if (! empty($connectionName = $this->getConnectionName())) { |
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| 427 | $translation->setConnection($connectionName); |
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| 428 | } |
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| 429 | |||
| 430 | $translation->setAttribute($this->getRelationKey(), $this->getKey()); |
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| 431 | $saved = $translation->save(); |
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| 432 | } |
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| 433 | } |
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| 434 | |||
| 435 | return $saved; |
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| 436 | } |
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| 437 | |||
| 438 | /** |
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| 439 | * @param array |
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| 440 | * |
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| 441 | * @return \Illuminate\Database\Eloquent\Model |
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| 442 | */ |
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| 443 | public function replicateWithTranslations(array $except = null) |
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| 455 | |||
| 456 | /** |
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| 457 | * @param \Illuminate\Database\Eloquent\Model $translation |
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| 458 | * |
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| 459 | * @return bool |
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| 460 | */ |
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| 461 | protected function isTranslationDirty(Model $translation) |
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| 468 | |||
| 469 | /** |
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| 470 | * @param string $locale |
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| 471 | * |
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| 472 | * @return \Illuminate\Database\Eloquent\Model |
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| 473 | */ |
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| 474 | public function getNewTranslation($locale) |
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| 483 | |||
| 484 | /** |
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| 485 | * @param $key |
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| 486 | * |
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| 487 | * @return bool |
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| 488 | */ |
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| 489 | public function __isset($key) |
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| 493 | |||
| 494 | /** |
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| 495 | * @param \Illuminate\Database\Eloquent\Builder $query |
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| 496 | * @param string $locale |
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| 497 | * |
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| 498 | * @return \Illuminate\Database\Eloquent\Builder|static |
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| 499 | */ |
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| 500 | View Code Duplication | public function scopeTranslatedIn(Builder $query, $locale = null) |
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| 508 | |||
| 509 | /** |
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| 510 | * @param \Illuminate\Database\Eloquent\Builder $query |
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| 511 | * @param string $locale |
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| 512 | * |
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| 513 | * @return \Illuminate\Database\Eloquent\Builder|static |
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| 514 | */ |
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| 515 | View Code Duplication | public function scopeNotTranslatedIn(Builder $query, $locale = null) |
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| 523 | |||
| 524 | /** |
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| 525 | * @param \Illuminate\Database\Eloquent\Builder $query |
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| 526 | * |
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| 527 | * @return \Illuminate\Database\Eloquent\Builder|static |
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| 528 | */ |
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| 529 | public function scopeTranslated(Builder $query) |
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| 533 | |||
| 534 | /** |
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| 535 | * Adds scope to get a list of translated attributes, using the current locale. |
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| 536 | * Example usage: Country::listsTranslations('name')->get()->toArray() |
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| 537 | * Will return an array with items: |
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| 538 | * [ |
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| 539 | * 'id' => '1', // The id of country |
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| 540 | * 'name' => 'Griechenland' // The translated name |
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| 541 | * ]. |
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| 542 | * |
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| 543 | * @param \Illuminate\Database\Eloquent\Builder $query |
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| 544 | * @param string $translationField |
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| 545 | */ |
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| 546 | public function scopeListsTranslations(Builder $query, $translationField) |
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| 570 | |||
| 571 | /** |
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| 572 | * This scope eager loads the translations for the default and the fallback locale only. |
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| 573 | * We can use this as a shortcut to improve performance in our application. |
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| 574 | * |
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| 575 | * @param Builder $query |
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| 576 | */ |
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| 577 | public function scopeWithTranslation(Builder $query) |
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| 589 | |||
| 590 | /** |
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| 591 | * This scope filters results by checking the translation fields. |
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| 592 | * |
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| 593 | * @param \Illuminate\Database\Eloquent\Builder $query |
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| 594 | * @param string $key |
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| 595 | * @param string $value |
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| 596 | * @param string $locale |
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| 597 | * |
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| 598 | * @return \Illuminate\Database\Eloquent\Builder|static |
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| 599 | */ |
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| 600 | View Code Duplication | public function scopeWhereTranslation(Builder $query, $key, $value, $locale = null) |
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| 609 | |||
| 610 | /** |
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| 611 | * This scope filters results by checking the translation fields. |
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| 612 | * |
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| 613 | * @param \Illuminate\Database\Eloquent\Builder $query |
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| 614 | * @param string $key |
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| 615 | * @param string $value |
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| 616 | * @param string $locale |
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| 617 | * |
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| 618 | * @return \Illuminate\Database\Eloquent\Builder|static |
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| 619 | */ |
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| 620 | public function scopeOrWhereTranslation(Builder $query, $key, $value, $locale = null) |
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| 629 | |||
| 630 | /** |
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| 631 | * This scope filters results by checking the translation fields. |
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| 632 | * |
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| 633 | * @param \Illuminate\Database\Eloquent\Builder $query |
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| 634 | * @param string $key |
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| 635 | * @param string $value |
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| 636 | * @param string $locale |
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| 637 | * |
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| 638 | * @return \Illuminate\Database\Eloquent\Builder|static |
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| 639 | */ |
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| 640 | View Code Duplication | public function scopeWhereTranslationLike(Builder $query, $key, $value, $locale = null) |
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| 649 | |||
| 650 | /** |
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| 651 | * This scope filters results by checking the translation fields. |
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| 652 | * |
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| 653 | * @param \Illuminate\Database\Eloquent\Builder $query |
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| 654 | * @param string $key |
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| 655 | * @param string $value |
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| 656 | * @param string $locale |
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| 657 | * |
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| 658 | * @return \Illuminate\Database\Eloquent\Builder|static |
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| 659 | */ |
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| 660 | public function scopeOrWhereTranslationLike(Builder $query, $key, $value, $locale = null) |
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| 669 | |||
| 670 | /** |
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| 671 | * @return array |
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| 672 | */ |
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| 673 | public function attributesToArray() |
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| 674 | { |
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| 675 | $attributes = parent::attributesToArray(); |
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| 676 | |||
| 677 | if (! $this->relationLoaded('translations') && ! $this->toArrayAlwaysLoadsTranslations()) { |
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| 678 | return $attributes; |
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| 679 | } |
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| 680 | |||
| 681 | $hiddenAttributes = $this->getHidden(); |
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| 682 | |||
| 683 | foreach ($this->translatedAttributes as $field) { |
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| 684 | if (in_array($field, $hiddenAttributes)) { |
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| 685 | continue; |
||
| 686 | } |
||
| 687 | |||
| 688 | if ($translations = $this->getTranslation()) { |
||
| 689 | $attributes[$field] = $translations->$field; |
||
| 695 | |||
| 696 | /** |
||
| 697 | * @return array |
||
| 698 | */ |
||
| 699 | public function getTranslationsArray() |
||
| 711 | |||
| 712 | /** |
||
| 713 | * @return string |
||
| 714 | */ |
||
| 715 | private function getTranslationsTable() |
||
| 719 | |||
| 720 | /** |
||
| 721 | * @return string |
||
| 722 | */ |
||
| 723 | protected function locale() |
||
| 732 | |||
| 733 | /** |
||
| 734 | * Set the default locale on the model. |
||
| 735 | * |
||
| 736 | * @param $locale |
||
| 737 | * |
||
| 738 | * @return $this |
||
| 739 | */ |
||
| 740 | public function setDefaultLocale($locale) |
||
| 746 | |||
| 747 | /** |
||
| 748 | * Get the default locale on the model. |
||
| 749 | * |
||
| 750 | * @return mixed |
||
| 751 | */ |
||
| 752 | public function getDefaultLocale() |
||
| 756 | |||
| 757 | /** |
||
| 758 | * Deletes all translations for this model. |
||
| 759 | * |
||
| 760 | * @param string|array|null $locales The locales to be deleted (array or single string) |
||
| 761 | * (e.g., ["en", "de"] would remove these translations). |
||
| 762 | */ |
||
| 763 | public function deleteTranslations($locales = null) |
||
| 779 | |||
| 780 | /** |
||
| 781 | * @param $key |
||
| 782 | * |
||
| 783 | * @return array |
||
| 784 | */ |
||
| 785 | private function getAttributeAndLocale($key) |
||
| 793 | |||
| 794 | /** |
||
| 795 | * @return bool |
||
| 796 | */ |
||
| 797 | private function toArrayAlwaysLoadsTranslations() |
||
| 801 | } |
||
| 802 |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: