serialize/unserialize fields automatically

[Eric Risler]

Hi,

How would we go about automatically unserializing one or more fields for an entity automatically? We store php arrays in "text" fields but would like these to be auto-unserialzed whenever they are read from the db and serialized whenever written.

Thanks.

[Grégoire Hubert]

Hi,

I can see 2 ways of doing it. The simplest one would be entities to
store serialized arrays as such. Getters and setter would provide
un/serialization on the fly. There are many drawbacks since arrays
cannot be manipulated.

The other (and cleaner) way would be
1° create a SerializedArray converter
2° associate it with a "serialized_array" type
3° assign those fields with this type. You will have to manually tell
Pomm which fields are using this type since Postgresql will not know
anything about it.

1° Your SerializedArrayConverter class must implement
\Pomm\Converter\ConverterInterface interface

2° Register the converter and associate it with a serialized_array type:

$database->registerConverter('SerializedArray', new
SerializedArrayConverter(), array('serialized_array'));

3° In your entities mapping classes, override postgres definition for this type:

class MyEntityMap extends BaseMyEntityMap
{
public function initialize()
{
parent::initialize();

$this->addField('my_field', 'serialized_array');
....
}
}

Trying this solution did highlite a bug :
https://github.com/chanmix51/Pomm/issues/127

Cheers
--
Grégoire HUBERT
Pomm http://www.pomm-project.org

[Eric Risler - MYNT Partners Inc.]

I was looking at using converters in the manner you mention but noticed the exception as well. I've commented on your issue thread. Thanks.

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Eric Risler

MYNT Partners Inc.

 

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[Grégoire Hubert]

The issue has been solved.

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Grégoire HUBERT
Pomm non ORM http://pomm.coolkeums.org