Allow specific column type

src/Db/Adapter/AbstractAdapter.php

@@ -87,6 +87,8 @@ abstract class AbstractAdapter implements AdapterInterface, DirectActionInterfac
 
     protected ?Connection $connection = null;
 
+    protected static array $specificColumnTypes = [];
+
     /**
      * Class Constructor.
      *
@@ -424,6 +426,17 @@ public function isValidColumnType(Column $column): bool
         return in_array($column->getType(), $this->getColumnTypes(), true);
     }
 
+    /**
+     * Add specific column type to adapter.
+     *
+     * @param string $type Adapter column type name.
+     * @return void
+     */
+    public static function addSpecificColumnType(string $type): void
+    {
+        static::$specificColumnTypes[] = $type;
+    }
+
     /**
      * @inheritDoc
      */

tests/TestCase/Db/Table/TableTest.php

@@ -108,6 +108,18 @@ public function testAddColumnWithNoAdapterSpecified(): void
         }
     }
 
+    public function testAddColumnWithSpecificColumnType(): void
+    {
+        PostgresAdapter::addSpecificColumnType('my_custom_type');
+        $adapter = new PostgresAdapter([]);
+        $table = new Table('ntable', [], $adapter);
+        $table->addColumn('email', 'my_custom_type');
+
+        $actions = $this->getPendingActions($table);
+        $this->assertInstanceOf(AddColumn::class, $actions[0]);
+        $this->assertEquals('my_custom_type', $actions[0]->getColumn()->getType());
+    }
+
     public function testAddComment(): void
     {
         $adapter = new MysqlAdapter([]);