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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace DevToolbelt\LaravelEloquentPlus\Casts; |
| 6 | |
| 7 | use DevToolbelt\LaravelEloquentPlus\Exceptions\ValidationException; |
| 8 | use Illuminate\Contracts\Database\Eloquent\CastsAttributes; |
| 9 | use Illuminate\Database\Eloquent\Model; |
| 10 | use Illuminate\Support\Facades\DB; |
| 11 | use stdClass; |
| 12 | |
| 13 | /** |
| 14 | * Cast that converts external UUID to internal numeric ID for foreign keys. |
| 15 | * |
| 16 | * This cast allows the application to receive UUIDs from external sources |
| 17 | * (like API requests) while storing numeric IDs in the database for performance. |
| 18 | * |
| 19 | * Usage in model: |
| 20 | * ```php |
| 21 | * protected $casts = [ |
| 22 | * 'product_id' => UuidToIdCast::class . ':products', |
| 23 | * 'category_id' => UuidToIdCast::class . ':categories,id', |
| 24 | * 'user_id' => UuidToIdCast::class . ':users,id,uuid', |
| 25 | * ]; |
| 26 | * ``` |
| 27 | * |
| 28 | * @package DevToolbelt\LaravelEloquentPlus\Casts |
| 29 | */ |
| 30 | final readonly class UuidToIdCast implements CastsAttributes |
| 31 | { |
| 32 | /** |
| 33 | * The default column name for external ID lookups. |
| 34 | */ |
| 35 | private const string DEFAULT_EXTERNAL_ID_COLUMN = 'external_id'; |
| 36 | |
| 37 | /** |
| 38 | * @param string $relatedTableName The name of the related table to lookup |
| 39 | * @param string|null $relatedPkName The primary key column name (defaults to the attribute key) |
| 40 | * @param string $externalIdColumn The external ID column name for lookup |
| 41 | */ |
| 42 | public function __construct( |
| 43 | private string $relatedTableName, |
| 44 | private ?string $relatedPkName = null, |
| 45 | private string $externalIdColumn = self::DEFAULT_EXTERNAL_ID_COLUMN, |
| 46 | ) { |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Transform the attribute from the underlying model values. |
| 51 | * |
| 52 | * Returns the numeric ID as stored in the database. |
| 53 | * |
| 54 | * @param Model $model |
| 55 | * @param string $key |
| 56 | * @param mixed $value |
| 57 | * @param array<string, mixed> $attributes |
| 58 | * @return mixed |
| 59 | */ |
| 60 | public function get(Model $model, string $key, mixed $value, array $attributes): mixed |
| 61 | { |
| 62 | return $value; |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Transform the attribute to its underlying model values. |
| 67 | * |
| 68 | * Converts UUID to numeric ID by looking up the related table. |
| 69 | * |
| 70 | * @param Model $model |
| 71 | * @param string $key |
| 72 | * @param mixed $value |
| 73 | * @param array<string, mixed> $attributes |
| 74 | * @return mixed |
| 75 | * @throws ValidationException |
| 76 | */ |
| 77 | public function set(Model $model, string $key, mixed $value, array $attributes): mixed |
| 78 | { |
| 79 | if ($value === null) { |
| 80 | return null; |
| 81 | } |
| 82 | |
| 83 | if (is_numeric($value)) { |
| 84 | return (int) $value; |
| 85 | } |
| 86 | |
| 87 | if (!is_string($value)) { |
| 88 | return $value; |
| 89 | } |
| 90 | |
| 91 | $record = $this->findRelatedRecord($value); |
| 92 | $pkColumn = $this->relatedPkName ?? 'id'; |
| 93 | |
| 94 | if (!$record) { |
| 95 | $message = "The selected '{$key}' is invalid. Record not found in '{$this->relatedTableName}'."; |
| 96 | |
| 97 | throw new ValidationException( |
| 98 | [['field' => $key, 'error' => 'relationRecordNotFound', 'value' => $value, 'message' => $message]], |
| 99 | $message |
| 100 | ); |
| 101 | } |
| 102 | |
| 103 | return $record->{$pkColumn}; |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Find the related record by external ID. |
| 108 | * |
| 109 | * @param string $externalId The external UUID to search for |
| 110 | * @return stdClass|null The found record or null |
| 111 | */ |
| 112 | private function findRelatedRecord(string $externalId): ?stdClass |
| 113 | { |
| 114 | return DB::table($this->relatedTableName) |
| 115 | ->where($this->externalIdColumn, $externalId) |
| 116 | ->first(); |
| 117 | } |
| 118 | } |