zend framework: models cannot interact with database on the server

I have just finished my first site built with zend framework and all works great on my local machine.

Then I uploaded it to the server (godaddy) and all works except any connection my mo开发者_如何学编程dels do with the database. I have made a connetion to the database with regular PDO with the credentials in my application.ini and it worked, and I can interact with the model if it's not returning anything from the database (and again all the models work great on my local machine).

My models looks like this:

class Default_Model_picture extends Zend_Db_Table_Abstract 
{

    protected $_name = 'pictures';

    protected $_primary = 'id';

    public function getPicturesByCategory($category)
    {

        $query = $this->select()->from(array('pictures'), array(
           'pictures.id', 'pictures.pic_name', 'pictures.pic_desc', 
           'pictures.pic_category', 'pictures.pic_date_added', 
           'pictures.pic_larger', 'pictures.pic_url'));

        $query->where('pic_category = ?', $category);
        $query->order('pic_date_added ASC');
        $result = $this->fetchAll($query);

        return $result;    
    }    
}

this is an example for a model, obviously i did not added lots of methods.

i have no idea what to do next.

I am assuming you set up the db connection correctly into $db. Afterwards you must set it as the default adapter for Zend_Db_Table.

Zend_Db_Table::setDefaultAdapter($db);

I am just assuming this is what went wrong. But it is a common problem, so I decided to go ahead and answer anyway.

Since your script works fine on your local machine, the first thing I check is if you have got the database connection params setup correctly in your application.ini

Try to write a test script that uses the pdo functions on itself (without zend framework). see if you get any errors at all

try {
    $dbh = new PDO('mysql:host=YOURHOST;dbname=YOURDBNAME', $YOURUSERNAME, $YOURPASSWORD);
    foreach($dbh->query('SELECT * from FOO') as $row) {
        print_r($row);
    }
    $dbh = null;
} catch (PDOException $e) {
    print "Error!: " . $e->getMessage() . "<br/>";
    die();
}