phalcon get enum values - php

Question

I'm working with database with a lot of columns with 'enum' and 'set' type. My point is to get values of column in Phalcon controller. I found some snippets, but nothing in Phalcon and when I tried to execute them it seems that Phalcon have some problems.
public function getEnumValues(){
$sql = "SHOW COLUMNS FROM profiles LIKE 'eyes_color'";
$query = new \Phalcon\Mvc\Model\Query($sql, $this->getDI());
$result = $query->execute();
return $result;
}
Returns:
Syntax error, unexpected token IDENTIFIER(SHOW), near to ' COLUMNS FROM profiles LIKE 'eyes_color'', when parsing: SHOW COLUMNS FROM profiles LIKE 'eyes_color'
Approach 2:
public function getEnumValues(){
$sql = "SELECT COLUMN_TYPE FROM COLUMNS WHERE TABLE_NAME = 'profiles' AND COLUMN_NAME = 'hair_color'";
$query = new \Phalcon\Mvc\Model\Query($sql, $this->getDI());
$result = $query->execute();
return $result;
}
Returns:
Model 'COLUMNS' could not be loaded
I would be grateful for any help.

Answer 1

This is working version for your needs:
$config = $this->getDI()->get('config');
$pdo = new \Phalcon\Db\Adapter\Pdo\Mysql([
"host" => $config->database->host,
"username" => $config->database->username,
"password" => $config->database->password,
"dbname" => $config->database->dbname,
]);
$sql = "
SELECT TRIM(TRAILING ')' FROM SUBSTRING(COLUMN_TYPE,6)) AS enum_list
FROM information_schema.COLUMNS
WHERE TABLE_SCHEMA='my_db_name'
AND TABLE_NAME='my_table_name'
AND COLUMN_NAME='my_column_name'
";
$result = $pdo->query($sql)->fetch();
$enumArray = array();
if (!empty($result['enum_list'])) {
$enumArray = explode(',', $result['enum_list']);
foreach ($enumArray as &$value) {
$value = trim($value, "'");
}
}
echo "<pre>"; var_dump($enumArray); die;

Answer 2

Could you get what you want from the columnMap function in the model?
$model = new Profile();
$columns = $model->columnMap();
This will return an array of all columns. Possible create another similar function to just return the columns you want? Perhaps what you're trying to achieve is more involved.
BTW I got the same error using the modelManager.