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<?php |
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/* |
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* This file is part of the overtrue/laravel-versionable. |
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* |
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* (c) overtrue <[email protected]> |
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* |
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* This source file is subject to the MIT license that is bundled. |
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*/ |
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namespace Overtrue\LaravelVersionable; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Database\Eloquent\Relations\MorphMany; |
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use Illuminate\Database\Eloquent\Relations\MorphOne; |
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trait Versionable |
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{ |
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// You can add these properties to you versionable model |
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//protected $versionable = []; |
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//protected $dontVersionable = ['*']; |
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public static function bootVersionable() |
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{ |
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static::saved(function (Model $model) { |
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self::createVersionForModel($model); |
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}); |
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static::deleted(function (Model $model) { |
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if ($model->forceDeleting) { |
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$model->removeAllVersions(); |
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} else { |
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self::createVersionForModel($model); |
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} |
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}); |
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} |
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private static function createVersionForModel(Model $model): void |
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{ |
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if ($model->shouldVersioning()) { |
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Version::createForModel($model); |
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$model->removeOldVersions($model->getKeepVersionsCount()); |
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} |
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} |
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/** |
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* @return \Illuminate\Database\Eloquent\Relations\MorphMany |
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*/ |
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public function versions(): MorphMany |
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{ |
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return $this->morphMany(\config('versionable.version_model'), 'versionable')->latest('id'); |
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} |
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/** |
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* @return \Illuminate\Database\Eloquent\Relations\MorphOne |
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*/ |
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public function lastVersion(): MorphOne |
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{ |
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return $this->morphOne(\config('versionable.version_model'), 'versionable')->latest('id'); |
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} |
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/** |
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* @param int $id |
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* |
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* @return \Illuminate\Database\Eloquent\Model|null |
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*/ |
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public function getVersion($id) |
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{ |
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return $this->versions()->find($id); |
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} |
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/** |
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* @param int $id |
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* |
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* @return mixed |
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*/ |
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public function revertToVersion($id) |
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{ |
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return $this->versions()->findOrFail($id)->revert(); |
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} |
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/** |
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* @param int $keep |
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*/ |
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public function removeOldVersions(int $keep): void |
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{ |
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if ($keep <= 0) { |
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return; |
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} |
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$this->versions()->skip($keep)->take($keep)->get()->each->delete(); |
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} |
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public function removeAllVersions() |
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{ |
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$this->versions->each->delete(); |
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} |
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/** |
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* @return bool |
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*/ |
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public function shouldVersioning(): bool |
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{ |
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return !empty($this->getVersionableAttributes()); |
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} |
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/** |
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* @return array |
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*/ |
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public function getVersionableAttributes(): array |
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{ |
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$changes = $this->getDirty(); |
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if (empty($changes)) { |
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return []; |
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} |
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switch ($this->getVersionStrategy()) { |
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case VersionStrategy::DIFF: |
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$contents = $changes; |
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break; |
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case VersionStrategy::SNAPSHOT: |
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$contents = $this->attributesToArray(); |
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break; |
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default: |
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$contents = $changes; |
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} |
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return $this->versionableFromArray($contents); |
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} |
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/** |
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* @param array $attributes |
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* |
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* @return $this |
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* |
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* @throws \Exception |
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*/ |
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public function setVersionable(array $attributes) |
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{ |
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if (!\property_exists($this, 'versionable')) { |
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throw new \Exception('Property $versionable not exist.'); |
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} |
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$this->versionable = $attributes; |
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return $this; |
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} |
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/** |
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* @param array $attributes |
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* |
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* @return $this |
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* |
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* @throws \Exception |
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*/ |
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public function setDontVersionable(array $attributes) |
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{ |
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if (!\property_exists($this, 'dontVersionable')) { |
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throw new \Exception('Property $dontVersionable not exist.'); |
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} |
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$this->dontVersionable = $attributes; |
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return $this; |
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} |
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/** |
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* @return array |
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*/ |
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public function getVersionable(): array |
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{ |
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return \property_exists($this, 'versionable') ? $this->versionable : []; |
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} |
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/** |
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* @return array |
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*/ |
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public function getDontVersionable(): array |
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{ |
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return \property_exists($this, 'dontVersionable') ? $this->dontVersionable : []; |
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} |
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/** |
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* @return string |
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*/ |
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public function getVersionStrategy() |
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{ |
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return \property_exists($this, 'versionStrategy') ? $this->versionStrategy : VersionStrategy::DIFF; |
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} |
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/** |
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* @param string $strategy |
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* |
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* @return $this |
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* |
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* @throws \Exception |
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*/ |
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public function setVersionStrategy(string $strategy) |
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{ |
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if (!\property_exists($this, 'versionStrategy')) { |
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throw new \Exception('Property $versionStrategy not exist.'); |
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} |
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$this->versionStrategy = $strategy; |
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return $this; |
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} |
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/** |
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* @return string |
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*/ |
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public function getVersionModel(): string |
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{ |
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return config('versionable.version_model'); |
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} |
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/** |
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* @return string |
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*/ |
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public function getKeepVersionsCount(): string |
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{ |
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return config('versionable.keep_versions', 0); |
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} |
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/** |
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* Get the versionable attributes of a given array. |
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* |
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* @param array $attributes |
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* |
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* @return array |
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*/ |
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public function versionableFromArray(array $attributes): array |
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{ |
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if (count($this->getVersionable()) > 0) { |
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return \array_intersect_key($attributes, array_flip($this->getVersionable())); |
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} |
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if (count($this->getDontVersionable()) > 0) { |
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return \array_diff_key($attributes, array_flip($this->getDontVersionable())); |
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} |
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return $attributes; |
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} |
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} |
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idable
provides a methodequalsId
that in turn relies on the methodgetId()
. If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()
as an abstract method to the trait will make sure it is available.