Laravel read only fields

Laravel read only fields lets you guard fields against unexpected updates.

An example use case for this might be when a projector in an event sourced system updates a read model. You want to make sure that the read model only gets updated by the projector.

Guarding fields on a model

To guard fields use the HasReadOnlyFields trait in your model, and specify the read only fields by creating an array on your model named $readOnlyFields

use Illuminate\Database\Eloquent\Model;
use Temperworks\ReadOnlyFields\HasReadOnlyFields;

class YourModel extends Model
{
    use HasReadOnlyFields;

    protected array $readOnlyFields = [
        'read_only_field'
    ];
}

Updating read only fields

When you want to update a read only field, you can mark that you intend to update the field by using writable(['read_only_field']). After the model is saved, the writable state is reset.

$model = YourModel::find(1);
$model->writable(['read_only_field'])->update(['read_only_field' => 'foo']);

// this will throw an exception since we already updated the model. 
$model->update(['read_only_field' => 'foobar']);

Credits

• Robert Baelde
• All Contributors

License

The MIT License (MIT). Please see License File for more information.