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<?php |
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namespace CodeZero\RouteKeyExists; |
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use Illuminate\Contracts\Validation\Rule; |
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class RouteKeyExists implements Rule |
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{ |
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/** |
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* The model to validate. |
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* |
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* @var \Illuminate\Database\Eloquent\Model |
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*/ |
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protected $model; |
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/** |
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* The attribute being validated. |
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* |
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* @var string |
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*/ |
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protected $attribute; |
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/** |
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* Replace the route key in the request |
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* with the actual database value? |
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* |
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* @var string|bool |
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*/ |
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protected $replaceAttribute = false; |
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/** |
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* Attribute with the actual database value |
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* to add to the request. |
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* |
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* @var string|bool |
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*/ |
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protected $addAttribute = false; |
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/** |
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* Create a new rule instance. |
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* |
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* @param string $model |
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* |
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* @return static |
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*/ |
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public static function model($model) |
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{ |
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return new static($model); |
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} |
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/** |
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* Create a new rule instance. |
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* |
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* @param string $model |
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*/ |
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public function __construct($model) |
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{ |
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$this->model = new $model; |
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} |
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/** |
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* Replace the route key in the request with the actual database value. |
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* If an attribute name is provided, the original request attribute |
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* name will be removed and replaced with the new one. |
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* |
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* @param string|null $attribute |
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* |
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* @return $this |
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*/ |
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public function replace($attribute = null) |
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{ |
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$this->replaceAttribute = $attribute ?: true; |
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return $this; |
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} |
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/** |
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* Add the given attribute with the actual |
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* database value to the request. |
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* |
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* @param string $attribute |
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* |
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* @return $this |
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*/ |
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public function add($attribute) |
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{ |
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$this->addAttribute = $attribute; |
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return $this; |
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} |
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/** |
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* Determine if the validation rule passes. |
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* |
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* @param string $attribute |
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* @param string $value |
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* |
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* @return bool |
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*/ |
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public function passes($attribute, $value) |
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{ |
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$this->attribute = $attribute; |
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if ( ! $model = $this->model->resolveRouteBinding($value)) { |
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return false; |
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} |
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$this->updateRequest($model); |
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return true; |
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} |
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/** |
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* Get the validation error message. |
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* |
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* @return string |
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*/ |
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public function message() |
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{ |
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return trans('validation.exists', [ |
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'attribute' => $this->attribute, |
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]); |
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} |
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/** |
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* Update the request attributes if needed. |
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* |
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* @param \Illuminate\Database\Eloquent\Model $model |
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* |
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* @return void |
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*/ |
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protected function updateRequest($model) |
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{ |
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$actualKey = $model->{$model->getRouteKeyName()}; |
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if ($this->replaceAttribute === true) { |
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$this->mergeRequest($this->attribute, $actualKey); |
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} |
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if (is_string($this->replaceAttribute)) { |
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$this->mergeRequest($this->replaceAttribute, $actualKey); |
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$this->removeFromRequest($this->attribute); |
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} |
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if (is_string($this->addAttribute)) { |
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$this->mergeRequest($this->addAttribute, $actualKey); |
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} |
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} |
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/** |
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* Merge the request attributes with the given key / value pair. |
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* |
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* @param string $key |
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* @param mixed $value |
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* |
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* @return void |
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*/ |
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protected function mergeRequest($key, $value) |
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{ |
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request()->merge([ |
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$key => $value, |
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]); |
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} |
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/** |
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* Remove an attribute from the request. |
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* |
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* @param string $attribute |
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* |
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* @return void |
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*/ |
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protected function removeFromRequest($attribute) |
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{ |
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$attributes = request()->all(); |
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if (isset($attributes[$attribute])) { |
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unset($attributes[$attribute]); |
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} |
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request()->replace($attributes); |
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} |
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} |
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codezero-be /
laravel-route-key-exists
