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Update README.md with an example of Symfony PHP config #148

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Update README.md with an example of Symfony PHP config #148

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Expand Up @@ -176,12 +176,28 @@ dunglas_doctrine_json_odm:
bar: App\SomethingElse\Bar
```

Or, the same config in PHP for better type-safety, e.g. `config/packages/doctrine_json_odm.php`:

```php
<?php

use App\Something\Foo;
use App\SomethingElse\Bar;

return static function (\Symfony\Config\DunglasDoctrineJsonOdmConfig $config): void {
$config->typeMap('foo', Foo::class);
$config->typeMap('bar', Bar::class);
};
```

With this, `Foo` objects will be serialized as:

```json
{ "#type": "foo", "someProperty": "someValue" }
```



Another option is to use your own custom type mapper implementing `Dunglas\DoctrineJsonOdm\TypeMapperInterface`. For this, just override the service definition:

```yaml
Expand Down