Thank you Bill for this detailed answer.
I'll implement the solution you suggest.
Bill Karwin wrote:
>
>
> Guillaume Oriol wrote:
> > I wonder why the developpers of Zend_Db component choose the class
> name
> > instead of column name in the reference map of a Zend_Db_Table
> object?
>
> I designed and implemented the table-relationships feature. The
> answer to your question of "why" is that the reference map is to help
> the Zend_Db_Table_Row object to instantiate related Table objects. It
> has nothing to do with designing custom SQL queries. You are using
> the $_referenceMap in a manner other than what it was designed for.
>
> You could just as easily say, "I want to hammer in a nail. I have a
> screwdriver, but it has a tip that isn't flat or blunt, so it's hard
> to use for nailing. I wonder why the screwdriver was designed this
> way?"
>
> That's not to say that what you are doing is in any way wrong.
> Hammering nails is a fine thing to do in many circumstances. It's
> just that the $_referenceMap doesn't contain the information to help
> you, so it's not the right tool.
>
> > I need to build dynamically my joins in a findBy* method and try to
> build them
> > from the existing reference map. But to do so, I need the
> referenced table name,
> > not the table class name. As the $_referenceMap only contains the
> table class
> > name, I am obliged to instantiate the class just to get its table
> name! Is there
> > a better way to do so?
>
> The $_referenceMap is simply a PHP associative array. You can add
> elements to it and use them in your custom methods.
>
> protected $_referenceMap = array(
> 'Bug' => array(
> 'columns' => array('bug_id'),
> 'refTableClass' => 'Bugs',
> 'refColumns' => array('bug_id'),
> // You can add a custom array element for example:
> 'guillaume_table_name' => 'bugs_tbl',
> )
> );
>
> You can use whatever string you want as the array key. The above is
> just an example. Zend_Db_Table_Row_Abstract expects some array keys,
> that that are documented, but you can create other keys in the same
> array too.
>
> Another solution is to name your Table classes the same as the
> database tables they represent. This is the default, by the way.
> Only if you declare a Table class including the $_name attribute does
> it use that name instead of the name of the class.
>
> class bugs extends Zend_Db_Table_Abstract
> {
> // no need to declare $_name if the class name is the same as the
> table name
> }
>
> Note that if you do this, your table name should conform to PEAR class
> naming conventions. E.g. a class named "bugs_tbl" should be defined
> in file bugs/tbl.php.
>
> Regards,
> Bill Karwin
>
>
-----
Guillaume ORIOL
Sofware architect
Technema
--
View this message in context:
http://www.nabble.com/class-name-instead-of-table-name-in-reference-map-%28Zend_Db%29-tp19860024p19872857.html
Sent from the Zend Framework mailing list archive at Nabble.com.
