Question

class Application_Model_DbTable_Email extends Zend_Db_Table_Abstract
{

protected $_name = 'memberdetail';

    function getUserid($email)
    {   
        $subquery = $this->select()
        ->from('memberdetail', array('memberid'))
        ->where('email = ?', $email);

        $select = $this->select()
        ->from('usertable', array('userid'))
        ->join('memberdetail', 'usertable.userid = memberdetail.memberid')
        ->where('usertable.userid = ?', $subquery);

        $row = $select->query()->fetch();

        if (!$row) {
        echo "User id not found";
        } else {
        return $userid = $row['userid'];
        }


    }

}

Hi, I am trying to return the userid from the above queries. However, the queries does not seemed to be executed as I always get refreshed whenever I call this function.

P.S this set of queries were given to me by another member.

Answer 1

it looks like this is being over thought. According to the info provided usertable.userid = memberdetail.memberid with this being the case your function is simple.

/** this function assumes one and only one email will match a memberid
 *  this function can be improved by validating $email as existing in DB
 *  prior to querying DB, should be done at form level but could be accomplished here
 *  with Zend_Validate_Db_RecordExists()
 */
public function getUserIdFromEmail($email) {
$select = $this->select();
$select->where('email = ?',$email);

$row = $this->fetchRow($select);//fetch a single row
if (!is_null($row) {//fetchRow returns null if no row matched
    return $row->memeberid;//return memberid as string/integer = usertable.userid
    } else {
      //handle error
    }
}