Zend DB Select : ORDER BY FIELD('id',some_array) - how?

How would you write the following query in Zend framewor开发者_运维知识库k?

SELECT * FROM table_name ORDER BY FIELD(field_name, 'Small','Medium','Large');

I just need the "Order by" part :)

Thanks!

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What about this:

      $db = Zend_Db_Table::getDefaultAdapter();

      $select = $db->select();

      $select->from('table_name')
              ->order(new Zend_Db_Expr("FIELD(field_name, 'Small','Medium','Large')"));


      var_dump($select->assemble());

Results in:

string 'SELECT `table_name`.* FROM `table_name` ORDER BY FIELD(field_name, 'Small','Medium','Large')' (length=92)

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$select->order(new Zend_Db_Expr('FIELD(field_name, 'Small','Medium','Large')'));

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I think you should do:

$db = Zend_Db::factory( ...options... );
$select = $db->select()
 ->from(table_name)
 ->order(new Zend_Db_Expr("FIELD(field_name, 'Small','Medium','Large')")));