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<?php |
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namespace Spatie\Activitylog\Traits; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Support\Arr; |
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use Illuminate\Support\Str; |
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use Spatie\Activitylog\Exceptions\CouldNotLogChanges; |
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trait DetectsChanges |
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{ |
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protected $oldAttributes = []; |
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216 |
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protected static function bootDetectsChanges() |
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{ |
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if (static::eventsToBeRecorded()->contains('updated')) { |
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static::updating(function (Model $model) { |
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//temporary hold the original attributes on the model |
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//as we'll need these in the updating event |
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112 |
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if (method_exists(Model::class, 'getRawOriginal')) { |
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// Laravel >7.0 |
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$oldValues = (new static)->setRawAttributes($model->getRawOriginal()); |
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} else { |
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// Laravel <7.0 |
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$oldValues = (new static)->setRawAttributes($model->getOriginal()); |
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} |
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208 |
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$model->oldAttributes = static::logChanges($oldValues); |
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}); |
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} |
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} |
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8 |
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public function attributesToBeLogged(): array |
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{ |
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$attributes = []; |
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if (isset(static::$logFillable) && static::$logFillable) { |
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$attributes = array_merge($attributes, $this->getFillable()); |
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} |
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136 |
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if ($this->shouldLogUnguarded()) { |
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$attributes = array_merge($attributes, array_diff(array_keys($this->getAttributes()), $this->getGuarded())); |
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} |
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if (isset(static::$logAttributes) && is_array(static::$logAttributes)) { |
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$attributes = array_merge($attributes, array_diff(static::$logAttributes, ['*'])); |
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208 |
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if (in_array('*', static::$logAttributes)) { |
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$attributes = array_merge($attributes, array_keys($this->getAttributes())); |
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} |
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} |
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if (isset(static::$logAttributesToIgnore) && is_array(static::$logAttributesToIgnore)) { |
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$attributes = array_diff($attributes, static::$logAttributesToIgnore); |
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} |
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return $attributes; |
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} |
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public function shouldLogOnlyDirty(): bool |
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{ |
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if (! isset(static::$logOnlyDirty)) { |
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return false; |
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} |
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return static::$logOnlyDirty; |
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} |
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public function shouldLogUnguarded(): bool |
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{ |
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if (! isset(static::$logUnguarded)) { |
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return false; |
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} |
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4 |
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if (! static::$logUnguarded) { |
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return false; |
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} |
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if (in_array('*', $this->getGuarded())) { |
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return false; |
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} |
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return true; |
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} |
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public function attributeValuesToBeLogged(string $processingEvent): array |
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{ |
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if (! count($this->attributesToBeLogged())) { |
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return []; |
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} |
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$properties['attributes'] = static::logChanges( |
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$processingEvent == 'retrieved' |
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? $this |
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: ( |
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$this->exists |
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? $this->fresh() ?? $this |
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: $this |
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) |
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); |
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if (static::eventsToBeRecorded()->contains('updated') && $processingEvent == 'updated') { |
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$nullProperties = array_fill_keys(array_keys($properties['attributes']), null); |
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$properties['old'] = array_merge($nullProperties, $this->oldAttributes); |
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$this->oldAttributes = []; |
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} |
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if ($this->shouldLogOnlyDirty() && isset($properties['old'])) { |
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$properties['attributes'] = array_udiff_assoc( |
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$properties['attributes'], |
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$properties['old'], |
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function ($new, $old) { |
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if ($old === null || $new === null) { |
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return $new === $old ? 0 : 1; |
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} |
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return $new <=> $old; |
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} |
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); |
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$properties['old'] = collect($properties['old']) |
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->only(array_keys($properties['attributes'])) |
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->all(); |
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} |
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return $properties; |
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} |
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public static function logChanges(Model $model): array |
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{ |
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$changes = []; |
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$attributes = $model->attributesToBeLogged(); |
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foreach ($attributes as $attribute) { |
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if (Str::contains($attribute, '.')) { |
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$changes += self::getRelatedModelAttributeValue($model, $attribute); |
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continue; |
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} |
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if (Str::contains($attribute, '->')) { |
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Arr::set( |
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$changes, |
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str_replace('->', '.', $attribute), |
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static::getModelAttributeJsonValue($model, $attribute) |
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); |
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continue; |
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} |
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$changes[$attribute] = $model->getAttribute($attribute); |
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if (is_null($changes[$attribute])) { |
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continue; |
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} |
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if ($model->isDateAttribute($attribute)) { |
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$changes[$attribute] = $model->serializeDate( |
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$model->asDateTime($changes[$attribute]) |
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); |
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} |
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if ($model->hasCast($attribute)) { |
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$cast = $model->getCasts()[$attribute]; |
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if ($model->isCustomDateTimeCast($cast)) { |
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$changes[$attribute] = $model->asDateTime($changes[$attribute])->format(explode(':', $cast, 2)[1]); |
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} |
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} |
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} |
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return $changes; |
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} |
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protected static function getRelatedModelAttributeValue(Model $model, string $attribute): array |
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{ |
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if (substr_count($attribute, '.') > 1) { |
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throw CouldNotLogChanges::invalidAttribute($attribute); |
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} |
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[$relatedModelName, $relatedAttribute] = explode('.', $attribute); |
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$relatedModelName = Str::camel($relatedModelName); |
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$relatedModel = $model->$relatedModelName ?? $model->$relatedModelName(); |
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return ["{$relatedModelName}.{$relatedAttribute}" => $relatedModel->$relatedAttribute ?? null]; |
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} |
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protected static function getModelAttributeJsonValue(Model $model, string $attribute) |
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{ |
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$path = explode('->', $attribute); |
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$modelAttribute = array_shift($path); |
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$modelAttribute = collect($model->getAttribute($modelAttribute)); |
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return data_get($modelAttribute, implode('.', $path)); |
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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
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.