pmd_relation_upd.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * PMD relation update handler
   5  *
   6  * @package PhpMyAdmin-Designer
   7  */
   8
   9 /**
  10  *
  11  */
  12 require_once './libraries/common.inc.php';
  13
  14 PMA_Response::getInstance()->disable();
  15
  16 require_once 'libraries/pmd_common.php';
  17 extract($_POST, EXTR_SKIP);
  18 extract($_GET, EXTR_SKIP);
  19 $die_save_pos = 0;
  20 require_once 'pmd_save_pos.php';
  21 list($DB1, $T1) = explode(".", $T1);
  22 list($DB2, $T2) = explode(".", $T2);
  23
  24 $tables = $GLOBALS['dbi']->getTablesFull($db, $T1);
  25 $type_T1 = strtoupper($tables[$T1]['ENGINE']);
  26 $tables = $GLOBALS['dbi']->getTablesFull($db, $T2);
  27 $type_T2 = strtoupper($tables[$T2]['ENGINE']);
  28
  29 $try_to_delete_internal_relation = false;
  30
  31 if (PMA_Util::isForeignKeySupported($type_T1)
  32     && PMA_Util::isForeignKeySupported($type_T2)
  33     && $type_T1 == $type_T2
  34 ) {
  35     // InnoDB
  36     $existrel_foreign = PMA_getForeigners($DB2, $T2, '', 'foreign');
  37
  38     if (isset($existrel_foreign[$F2]['constraint'])) {
  39         $upd_query  = 'ALTER TABLE ' . PMA_Util::backquote($DB2)
  40             . '.' . PMA_Util::backquote($T2) . ' DROP FOREIGN KEY '
  41             . PMA_Util::backquote($existrel_foreign[$F2]['constraint'])
  42             . ';';
  43         $upd_rs     = $GLOBALS['dbi']->query($upd_query);
  44     } else {
  45         // there can be an internal relation even if InnoDB
  46         $try_to_delete_internal_relation = true;
  47     }
  48 } else {
  49     $try_to_delete_internal_relation = true;
  50 }
  51 if ($try_to_delete_internal_relation) {
  52     // internal relations
  53     PMA_queryAsControlUser(
  54         'DELETE FROM '
  55         . PMA_Util::backquote($GLOBALS['cfgRelation']['db']) . '.'
  56         . $cfg['Server']['relation'].' WHERE '
  57         . 'master_db = \'' . PMA_Util::sqlAddSlashes($DB2) . '\''
  58         . ' AND master_table = \'' . PMA_Util::sqlAddSlashes($T2) . '\''
  59         . ' AND master_field = \'' . PMA_Util::sqlAddSlashes($F2) . '\''
  60         . ' AND foreign_db = \'' . PMA_Util::sqlAddSlashes($DB1) . '\''
  61         . ' AND foreign_table = \'' . PMA_Util::sqlAddSlashes($T1) . '\''
  62         . ' AND foreign_field = \'' . PMA_Util::sqlAddSlashes($F1) . '\'',
  63         false,
  64         PMA_DatabaseInterface::QUERY_STORE
  65     );
  66 }
  67 PMD_return_upd(1, __('Relation deleted'));
  68
  69 ?>