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<?php | |
/** | |
* Adminer plugin that display the first CHAR/VARCHAR column of the foreign key | |
* | |
* @category Plugin | |
* @link http://www.adminer.org/plugins/#use | |
* @author Bruno VIBERT <http://www.netapsys.fr> | |
* @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0 | |
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other) | |
*/ | |
class AdminerDisplayForeignKeyName | |
{ | |
protected static $_valueCache = array(); | |
/** | |
* Get a cache entry | |
*/ | |
protected static function _getCache( $key ) | |
{ | |
if( array_key_exists( $key, self::$_valueCache ) ) | |
{ | |
return self::$_valueCache[ $key ]; | |
} | |
return false; | |
} | |
/** | |
* Set a cache entry | |
*/ | |
protected static function _setCache( $key, $value ) | |
{ | |
self::$_valueCache[ $key ] = $value; | |
} | |
/** | |
* Render a foreign key value | |
*/ | |
function selectVal($val, $link, $field, $original) { | |
$return = ($val === null ? "<i>NULL</i>" : (preg_match("~char|binary~", $field["type"]) && !preg_match("~var~", $field["type"]) ? "<code>$val</code>" : $val)); | |
if (preg_match('~blob|bytea|raw|file~', $field["type"]) && !is_utf8($val)) | |
{ | |
$return = lang('%d byte(s)', strlen($original)); | |
} | |
else | |
{ | |
parse_str( substr($link, 1 ), $params ); | |
if( true == is_array($params) && true == array_key_exists('where', $params) ) | |
{ | |
$where = array(); | |
foreach( $params['where'] as $param ) | |
{ | |
$where[] = join(' ', $param ); | |
} | |
// Find the first char/varchar field to display | |
$fieldName = false; | |
foreach( fields( $params['select'] ) as $field ) | |
{ | |
if( true == in_array( $field['type'], array('char','varchar' ) ) ) | |
{ | |
$fieldName = $field['field']; | |
break; | |
} | |
} | |
if( false !== $fieldName ) | |
{ | |
$query = sprintf('SELECT %s FROM %s WHERE %s LIMIT 1', $fieldName, $params['select'], join(' AND ', $where ) ); | |
$return = self::_getCache( md5( $query ) ); | |
if( false === $return ) | |
{ | |
$result = connection() -> query( $query ); | |
if($result -> num_rows == 1 ) | |
{ | |
$row = $result -> fetch_assoc(); | |
$value = $row[$fieldName]; | |
$length = ( isset( $_GET['text_length'] ) )? (int) $_GET['text_length'] : 100; | |
if( strlen($value) > $length ) | |
$value = substr( $value, 0, $length ).'...'; | |
$return = sprintf('<strong>[%s]</strong> %s', $original, $value ); | |
self::_setCache( md5( $query ),$return ); | |
} | |
} | |
} | |
} | |
} | |
return ($link ? "<a href='" . h($link) . "'" . (is_url($link) ? " rel='noreferrer'" : "") . ">$return</a>" : $return); | |
} | |
} |
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