zf2 entity with joins - zend-framework2

Question

I need to combine information from several tables.
In case of using entity I should create all possible fields as properties + setters/getters for them.
But on saving object - I should split / unset all properties which is not in main table.
Possibly there is more "true" way to deal with it, without using doctrine etc.

Answer 1

If I were you, I would take a closer look to Hydrators:
ZF2 docs on hydrators
Create a new class that implements the HydratorInterface:
namespace Zend\Stdlib\Hydrator;
interface HydratorInterface
{
/**
* Extract values from an object
*
* #param object $object
* #return array
*/
public function extract($object);
/**
* Hydrate $object with the provided $data.
*
* #param array $data
* #param object $object
* #return void
*/
public function hydrate(array $data, $object);
}
You need to implement 2 functions:
extract($object);
Extract will create an array from an object.
hydrate(array $data, $object);
Hydrate will create an object from an array.
When you do a select you can have all fields in 1 array, so there you have no problem to put it in the object. When extracting, you want it split up. You could implement extract in such a way:
public function extract($object)
{
return array(
'tbl1' => array(
'fld1' => $object->getFld1(),
'fld2' => $object->getFld2(),
'fld3' => $object->getFld3(),
),
'tbl2' => array(
'fld4' => $object->getFld4(),
'fld5' => $object->getFld5(),
),
'tbl3' => array(
'fld6' => $object->getFld6(),
'fld7' => $object->getFld7(),
'fld8' => $object->getFld8(),
'fld9' => $object->getFld9(),
),
);
}
When you then extract the data, you can pass each group of data to the correct table for insert or update.