/**
* Removes a version
*/
public static function delete_version($version)
{
$table = NimbleRecord::$adapter->quote_table_name(static::migration_table_name());
$query = new NimbleQuery(NimbleQuery::DELETE);
$query->from = $table;
$query->where = NimbleQuery::condition('version', $version);
$sql = $query->build();
Migration::execute($sql);
}
/**
* Checks weither a record exists or not
* @param string $col Column name you wish to check
* @param string $value Value you wish to check aginst
* @todo add multi conditional support
*/
public static function exists()
{
$args = func_get_args();
$query = new NimbleQuery();
$query->select = '1';
$query->from = static::table_name();
$query->limit = '0,1';
if (count($args) == 2) {
$col = $args[0];
$value = $args[1];
$query->where = NimbleQuery::condition(static::sanatize_input_array($col), static::sanatize_input_array($value));
} elseif (is_array($args[0])) {
$conditions = array();
foreach ($args[0] as $col => $value) {
$conditions[] = NimbleQuery::condition(static::sanatize_input_array($col), static::sanatize_input_array($value));
}
$query->where = implode(' AND ', $conditions);
}
$sql = $query->build();
unset($query);
$result = static::execute($sql);
$return = $result->fetch_assoc();
if (isset($return['1'])) {
return true;
} else {
return false;
}
}
/**
* Performs a find for has_many->as (polymorphic)
* @param NimbleRecord $class
* @param string $name - association name
* @param array $options
*/
protected static function has_many_polymorphic_find($class, $name, $options = array())
{
$id = $class->row[NimbleRecord::$primary_key_field];
$model = static::model($name);
$polymorphic_column_type = $options['as'] . '_type';
$polymorphic_column_id = $options['as'] . '_id';
$class = strtolower(static::class_as_string($class));
$conditions = implode(' AND ', array(NimbleQuery::condition($polymorphic_column_type, $class), NimbleQuery::condition($polymorphic_column_id, $id)));
if (strpos($id, 'IN') !== false) {
$conditions = implode(' AND ', array(NimbleQuery::condition($polymorphic_column_type, $class), $polymorphic_column_id . $id));
}
$merg_conditions = array($conditions);
if (!is_null($options['conditions'])) {
$merg_conditions[] = $options['conditions'];
}
$options['conditions'] = implode(' AND ', $merg_conditions);
return call_user_func("{$model}::find_all", $options);
}
