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Added list_columns() for PDO connections

This commit is contained in:
Deon George 2016-07-24 23:29:41 +10:00
parent 8f659c50c6
commit 3bbab271e7
2 changed files with 100 additions and 0 deletions
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classes/Database/PDO.php Normal file
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<?php defined('SYSPATH') or die('No direct access allowed.');
class Database_PDO extends lnApp_Database_PDO {}
?>

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classes/lnApp/Database/PDO.php Normal file
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<?php defined('SYSPATH') or die('No direct access allowed.');
/**
* PDO MySQL database connection.
*
* Modified to provide list_columns().
*
* @package lnApp
* @category Modifications
* @author Deon George
* @copyright (c) 2014 Deon George
* @license http://dev.leenooks.net/license.html
*/
abstract class lnApp_Database_PDO extends Kohana_Database_PDO {
public function list_columns($table, $like = NULL, $add_prefix = TRUE)
{
// Quote the table name
$table = ($add_prefix === TRUE) ? $this->quote_table($table) : $table;
if (is_string($like))
{
// Search for column names
$result = $this->query(Database::SELECT, 'SHOW FULL COLUMNS FROM '.$table.' LIKE '.$this->quote($like), FALSE);
}
else
{
// Find all column names
$result = $this->query(Database::SELECT, 'SHOW FULL COLUMNS FROM '.$table, FALSE);
}
$count = 0;
$columns = array();
foreach ($result as $row)
{
list($type, $length) = $this->_parse_type($row['Type']);
$column = $this->datatype($type);
$column['column_name'] = $row['Field'];
$column['column_default'] = $row['Default'];
$column['data_type'] = $type;
$column['is_nullable'] = ($row['Null'] == 'YES');
$column['ordinal_position'] = ++$count;
switch ($type) //was $column['type']
{
case 'float':
if (isset($length))
{
list($column['numeric_precision'], $column['numeric_scale']) = explode(',', $length);
}
break;
case 'int':
if (isset($length))
{
// MySQL attribute
$column['display'] = $length;
}
break;
case 'string':
switch ($column['data_type'])
{
case 'binary':
case 'varbinary':
$column['character_maximum_length'] = $length;
break;
case 'char':
case 'varchar':
$column['character_maximum_length'] = $length;
case 'text':
case 'tinytext':
case 'mediumtext':
case 'longtext':
$column['collation_name'] = $row['Collation'];
break;
case 'enum':
case 'set':
$column['collation_name'] = $row['Collation'];
$column['options'] = explode('\',\'', substr($length, 1, -1));
break;
}
break;
}
// MySQL attributes
$column['comment'] = $row['Comment'];
$column['extra'] = $row['Extra'];
$column['key'] = $row['Key'];
$column['privileges'] = $row['Privileges'];
$columns[$row['Field']] = $column;
}
return $columns;
}
}