feat: add Model field casting

deptrac.yaml

@@ -177,6 +177,7 @@ parameters:
     DataCaster:
       - I18n
       - URI
+      - Database
     DataConverter:
       - DataCaster
     Email:
@@ -203,6 +204,7 @@ parameters:
       - I18n
     Model:
       - Database
+      - DataConverter
       - Entity
       - I18n
       - Pager
@@ -248,6 +250,8 @@ parameters:
       - CodeIgniter\Entity\Exceptions\CastException
     CodeIgniter\DataCaster\Exceptions\CastException:
       - CodeIgniter\Entity\Exceptions\CastException
+    CodeIgniter\DataConverter\DataConverter:
+      - CodeIgniter\Entity\Entity
     CodeIgniter\Entity\Cast\URICast:
       - CodeIgniter\HTTP\URI
     CodeIgniter\Log\Handlers\ChromeLoggerHandler:

rector.php

@@ -33,6 +33,7 @@
 use Rector\Config\RectorConfig;
 use Rector\DeadCode\Rector\ClassMethod\RemoveUnusedConstructorParamRector;
 use Rector\DeadCode\Rector\ClassMethod\RemoveUnusedPrivateMethodRector;
+use Rector\DeadCode\Rector\ClassMethod\RemoveUnusedPromotedPropertyRector;
 use Rector\DeadCode\Rector\If_\UnwrapFutureCompatibleIfPhpVersionRector;
 use Rector\EarlyReturn\Rector\Foreach_\ChangeNestedForeachIfsToEarlyContinueRector;
 use Rector\EarlyReturn\Rector\If_\ChangeIfElseValueAssignToEarlyReturnRector;
@@ -95,6 +96,11 @@
         JsonThrowOnErrorRector::class,
         YieldDataProviderRector::class,
 
+        RemoveUnusedPromotedPropertyRector::class => [
+            // Bug in rector 1.0.0. See https://github.com/rectorphp/rector-src/pull/5573
+            __DIR__ . '/tests/_support/Entity/CustomUser.php',
+        ],
+
         RemoveUnusedPrivateMethodRector::class => [
             // private method called via getPrivateMethodInvoker
             __DIR__ . '/tests/system/Test/ReflectionHelperTest.php',
@@ -116,9 +122,10 @@
             __DIR__ . '/system/Autoloader/Autoloader.php',
         ],
 
-        // session handlers have the gc() method with underscored parameter `$max_lifetime`
         UnderscoreToCamelCaseVariableNameRector::class => [
+            // session handlers have the gc() method with underscored parameter `$max_lifetime`
             __DIR__ . '/system/Session/Handlers',
+            __DIR__ . '/tests/_support/Entity/CustomUser.php',
         ],
 
         DeclareStrictTypesRector::class => [

system/BaseModel.php

@@ -19,6 +19,8 @@
 use CodeIgniter\Database\Exceptions\DatabaseException;
 use CodeIgniter\Database\Exceptions\DataException;
 use CodeIgniter\Database\Query;
+use CodeIgniter\DataConverter\DataConverter;
+use CodeIgniter\Entity\Entity;
 use CodeIgniter\Exceptions\ModelException;
 use CodeIgniter\I18n\Time;
 use CodeIgniter\Pager\Pager;
@@ -99,13 +101,30 @@ abstract class BaseModel
      * Used by asArray() and asObject() to provide
      * temporary overrides of model default.
      *
-     * @var string
+     * @var 'array'|'object'|class-string
      */
     protected $tempReturnType;
 
     /**
-     * Whether we should limit fields in inserts
-     * and updates to those available in $allowedFields or not.
+     * Array of column names and the type of value to cast.
+     *
+     * @var array<string, string> [column => type]
+     */
+    protected array $casts = [];
+
+    /**
+     * Custom convert handlers.
+     *
+     * @var array<string, class-string> [type => classname]
+     */
+    protected array $castHandlers = [];
+
+    protected ?DataConverter $converter = null;
+
+    /**
+     * If this model should use "softDeletes" and
+     * simply set a date when rows are deleted, or
+     * do hard deletes.
      *
      * @var bool
      */
@@ -346,6 +365,29 @@ public function __construct(?ValidationInterface $validation = null)
         $this->validation = $validation;
 
         $this->initialize();
+        $this->createDataConverter();
+    }
+
+    /**
+     * Creates DataConverter instance.
+     */
+    protected function createDataConverter(): void
+    {
+        if ($this->useCasts()) {
+            $this->converter = new DataConverter(
+                $this->casts,
+                $this->castHandlers,
+                $this->db
+            );
+        }
+    }
+
+    /**
+     * Are casts used?
+     */
+    protected function useCasts(): bool
+    {
+        return $this->casts !== [];
     }
 
     /**
@@ -1684,7 +1726,7 @@ public function asArray()
      * class vars with the same name as the collection columns,
      * or at least allows them to be created.
      *
-     * @param string $class Class Name
+     * @param 'object'|class-string $class Class Name
      *
      * @return $this
      */
@@ -1784,6 +1826,9 @@ protected function objectToRawArray($object, bool $onlyChanged = true, bool $rec
      * @throws DataException
      * @throws InvalidArgumentException
      * @throws ReflectionException
+     *
+     * @used-by insert()
+     * @used-by update()
      */
     protected function transformDataToArray($row, string $type): array
     {
@@ -1795,20 +1840,31 @@ protected function transformDataToArray($row, string $type): array
             throw DataException::forEmptyDataset($type);
         }
 
+        // If it validates with entire rules, all fields are needed.
+        if ($this->skipValidation === false && $this->cleanValidationRules === false) {
+            $onlyChanged = false;
+        } else {
+            $onlyChanged = ($type === 'update' && $this->updateOnlyChanged);
+        }
+
+        if ($this->useCasts()) {
+            if (is_array($row)) {
+                $row = $this->converter->toDataSource($row);
+            } elseif ($row instanceof stdClass) {
+                $row = (array) $row;
+                $row = $this->converter->toDataSource($row);
+            } elseif ($row instanceof Entity) {
+                $row = $this->converter->extract($row, $onlyChanged);
+                // Convert any Time instances to appropriate $dateFormat
+                $row = $this->timeToString($row);
+            } elseif (is_object($row)) {
+                $row = $this->converter->extract($row, $onlyChanged);
+            }
+        }
         // If $row is using a custom class with public or protected
         // properties representing the collection elements, we need to grab
         // them as an array.
-        if (is_object($row) && ! $row instanceof stdClass) {
-            if ($type === 'update' && ! $this->updateOnlyChanged) {
-                $onlyChanged = false;
-            }
-            // If it validates with entire rules, all fields are needed.
-            elseif ($this->skipValidation === false && $this->cleanValidationRules === false) {
-                $onlyChanged = false;
-            } else {
-                $onlyChanged = ($type === 'update');
-            }
-
+        elseif (is_object($row) && ! $row instanceof stdClass) {
             $row = $this->objectToArray($row, $onlyChanged, true);
         }
 
@@ -1883,4 +1939,23 @@ public function allowEmptyInserts(bool $value = true): self
 
         return $this;
     }
+
+    /**
+     * Converts database data array to return type value.
+     *
+     * @param array<string, mixed>          $row        Raw data from database
+     * @param 'array'|'object'|class-string $returnType
+     */
+    protected function convertToReturnType(array $row, string $returnType): array|object
+    {
+        if ($returnType === 'array') {
+            return $this->converter->fromDataSource($row);
+        }
+
+        if ($returnType === 'object') {
+            return (object) $this->converter->fromDataSource($row);
+        }
+
+        return $this->converter->reconstruct($returnType, $row);
+    }
 }

system/Commands/Generators/Views/model.tpl.php

@@ -20,6 +20,9 @@ class {class} extends Model
     protected bool $allowEmptyInserts = false;
     protected bool $updateOnlyChanged = true;
 
+    protected array $casts = [];
+    protected array $castHandlers = [];
+
     // Dates
     protected $useTimestamps = false;
     protected $dateFormat    = 'datetime';

system/DataCaster/Cast/ArrayCast.php

@@ -21,8 +21,11 @@
  */
 class ArrayCast extends BaseCast implements CastInterface
 {
-    public static function get(mixed $value, array $params = []): array
-    {
+    public static function get(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): array {
         if (! is_string($value)) {
             self::invalidTypeValueError($value);
         }
@@ -34,8 +37,11 @@ public static function get(mixed $value, array $params = []): array
         return (array) $value;
     }
 
-    public static function set(mixed $value, array $params = []): string
-    {
+    public static function set(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): string {
         return serialize($value);
     }
 }

system/DataCaster/Cast/BaseCast.php

@@ -13,17 +13,23 @@
 
 namespace CodeIgniter\DataCaster\Cast;
 
-use TypeError;
+use InvalidArgumentException;
 
 abstract class BaseCast implements CastInterface
 {
-    public static function get(mixed $value, array $params = []): mixed
-    {
+    public static function get(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): mixed {
         return $value;
     }
 
-    public static function set(mixed $value, array $params = []): mixed
-    {
+    public static function set(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): mixed {
         return $value;
     }
 
@@ -34,6 +40,6 @@ protected static function invalidTypeValueError(mixed $value): never
             $message .= ', and its value: ' . var_export($value, true);
         }
 
-        throw new TypeError($message);
+        throw new InvalidArgumentException($message);
     }
 }

system/DataCaster/Cast/BooleanCast.php

@@ -21,8 +21,11 @@
  */
 class BooleanCast extends BaseCast
 {
-    public static function get(mixed $value, array $params = []): bool
-    {
+    public static function get(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): bool {
         // For PostgreSQL
         if ($value === 't') {
             return true;

system/DataCaster/Cast/CSVCast.php

@@ -21,17 +21,23 @@
  */
 class CSVCast extends BaseCast
 {
-    public static function get(mixed $value, array $params = []): array
-    {
+    public static function get(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): array {
         if (! is_string($value)) {
             self::invalidTypeValueError($value);
         }
 
         return explode(',', $value);
     }
 
-    public static function set(mixed $value, array $params = []): string
-    {
+    public static function set(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): string {
         if (! is_array($value)) {
             self::invalidTypeValueError($value);
         }

system/DataCaster/Cast/CastInterface.php

@@ -20,18 +20,28 @@ interface CastInterface
      *
      * @param mixed        $value  Data from database driver
      * @param list<string> $params Additional param
+     * @param object|null  $helper Helper object. E.g., database connection
      *
      * @return mixed PHP native value
      */
-    public static function get(mixed $value, array $params = []): mixed;
+    public static function get(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): mixed;
 
     /**
      * Takes a PHP value, returns its value for DataSource.
      *
      * @param mixed        $value  PHP native value
      * @param list<string> $params Additional param
+     * @param object|null  $helper Helper object. E.g., database connection
      *
      * @return mixed Data to pass to database driver
      */
-    public static function set(mixed $value, array $params = []): mixed;
+    public static function set(
+        mixed $value,
+        array $params = [],
+        ?object $helper = null
+    ): mixed;
 }