Hello, Great Zend Masters!
I need to separate some bits of a ZF1 project into a new project and figured
the shiny new ZF2 was the way to go.
Zend_Db in ZF1 was very straightforward to me. However, I'm having a hard time
figuring out how to apply what's being
done in ZF1 in the new ZF2 Zend\Db.
On the surface, it appears that Zend\Db\TableGateway corresponds to
Zend_Db_Table, Zend\Db\ResultSet to
Zend_Db_TableRowset, and Zend\Db\RowGateway to Zend_Db_Table_Row. If so, should
I use the ZF2 classes the same way I did
their counterparts in ZF1, or has the whole paradigm shifted?
In ZF1 I have a good number of tables defined like this:
class Application_Model_DbTable_Foo extends Zend_Db_Table_Abstract
{
protected $_name = 'Foo';
protected $_rowClass = 'Application_Model_DbTableRow_Foo';
protected $_dependentTables = array('Bar', 'Baz');
protected $_referenceMap = array([mapping here]);
}
My row classes look like this:
/**
* @property int ID
* @property string Name
*/
class Application_Model_DbTableRow_Foo extends Zend_Db_Table_Row_Abstract
{
}
The row class isn't necessary, but simply makes it easy to work with the object
properties in my IDE, Zend Studio (aka
Eclipse PDT+).
My normal usage would be to instantiate Application_Model_DbTable_Foo whenever
I needed to use the table in my various
Model classes. In ZF2, it appears that by using the ServiceManager, we no
longer have to instantiate the table object
every time, but simply refer to it via the SM. That part makes sense.
But in the ZF2 User's Guide, the example code appears to have Album\Model\Album
taking the place of the
Zend_Db_Table_Row in ZF1. If that's correct, where does Zend\Db\RowGateway fit
in?
Also in the User's Guide, the Album\Model\AlbumTable seems to be a very thin
Mapper. Wouldn't a concrete TableGateway
have worked just as well in this simple app? If so, would we still use the
AlbumTableGateway factory in
Module->getServiceConfig()?
And wouldn't the default ArrayObject prototype work just as well as
Album\Model\Album? What's the advantage of that class?
I'm probably making this harder than it needs to be, but it seems that while
the Guide does a fairly good job of explain
WHAT is going on, it just doesn't explain the WHY.
Help me Obi-Wan-ZendObi. You're my only help.
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