function find_linked($strClass, $mxdCondition = null, $strOrder = null)
{
if ($this->id) {
// only attempt to find links if this object has an id
$table = MyActiveRecord::Class2Table($strClass);
$thistable = MyActiveRecord::Class2Table($this);
$linktable = MyActiveRecord::GetLinkTable($table, $thistable);
$strOrder = $strOrder ? $strOrder : "{$strClass}.id";
$sql = "SELECT {$table}.* FROM {$table} INNER JOIN {$linktable} ON {$table}_id = {$table}.id WHERE {$linktable}.{$thistable}_id = {$this->id} ";
if (is_array($mxdCondition)) {
foreach ($mxdCondition as $key => $val) {
$val = addslashes($val);
$sql .= " AND {$key} = '{$val}' ";
}
} else {
if ($mxdCondition) {
$sql .= " AND {$mxdCondition}";
}
}
$sql .= " ORDER BY {$strOrder}";
return MyActiveRecord::FindBySql($strClass, $sql);
} else {
return array();
}
}
/**
* returns array of 'linked' objects. (many-to-many relationship)
* e.g.
* <code>
* foreach( $user->find_linked('Role') as $role ) print $role->name;
* </code>
*
* In order for the above to work, you would need to have a linking table
* called Role_User in your database, containing the fields role_id and user_id
*
* @param string strClass Name of the class of objects to return in the array
* @param string strCondition Optional SQL condition, e.g. 'password NOT NULL'
* @return array array containing objects of class strClass
*
*/
public function find_linked($strClass, $mxdCondition = null, $strOrder = null)
{
if ($this->id) {
// only attempt to find links if this object has an id
$table = MyActiveRecord::Class2Table($strClass);
$thistable = MyActiveRecord::Class2Table($this);
$linktable = MyActiveRecord::GetLinkTable($table, $thistable);
$strOrder = $strOrder ? $strOrder : $table . '.id';
// CHANGED replaced wrongly cased $strClass by $table
$sql = "SELECT `{$table}`.* FROM `{$table}` INNER JOIN `{$linktable}` ON `{$table}_id`=`{$table}`.`id` WHERE `{$linktable}`.`{$thistable}_id`={$this->id}";
if (is_array($mxdCondition)) {
foreach ($mxdCondition as $key => $val) {
$val = addslashes($val);
$sql .= " AND {$key} = '{$val}' ";
}
} else {
if ($mxdCondition) {
$sql .= " AND {$mxdCondition}";
}
}
$sql .= " ORDER BY {$strOrder}";
return MyActiveRecord::FindBySql($strClass, $sql);
} else {
return array();
}
}
/**
* Count number of items of type strClass which are linked to the current object.
*
* @param string $strClass Class of objects to count.
* @param string $mxdCondition Additional WHERE clause
* @return int
*/
function count_linked($strClass, $mxdCondition = null)
{
if (isset($this->id) && $this->id > 0) {
$this->id = intval($this->id);
// only attempt to find links if this object has an id
$table = MyActiveRecord::Class2Table($strClass);
$thistable = MyActiveRecord::Class2Table($this);
$linktable = MyActiveRecord::GetLinkTable($table, $thistable);
$sql = "SELECT COUNT(1) AS _count FROM {$table} INNER JOIN {$linktable} ON {$table}_id = {$table}.id WHERE {$linktable}.{$thistable}_id = {$this->id} ";
if (is_array($mxdCondition)) {
foreach ($mxdCondition as $key => $val) {
$val = addslashes($val);
$sql .= " AND {$key} = '{$val}' ";
}
} else {
if ($mxdCondition) {
$sql .= " AND {$mxdCondition}";
}
}
$result = MyActiveRecord::Query($sql);
if ($row = mysql_fetch_object($result)) {
return $row->_count;
}
}
return 0;
}
