pmd_relation_new.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  *
   5  * @package PhpMyAdmin-Designer
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once './libraries/common.inc.php';
  12
  13 PMA_Response::getInstance()->disable();
  14
  15 require_once 'libraries/pmd_common.php';
  16 $die_save_pos = 0;
  17 require_once 'pmd_save_pos.php';
  18 extract($_POST, EXTR_SKIP);
  19
  20 $tables = PMA_DBI_getTablesFull($db, $T1);
  21 $type_T1 = strtoupper($tables[$T1]['ENGINE']);
  22 $tables = PMA_DBI_getTablesFull($db, $T2);
  23 $type_T2 = strtoupper($tables[$T2]['ENGINE']);
  24
  25 // native foreign key
  26 if (PMA_Util::isForeignKeySupported($type_T1)
  27     && PMA_Util::isForeignKeySupported($type_T2)
  28     && $type_T1 == $type_T2
  29 ) {
  30     // relation exists?
  31     $existrel_foreign = PMA_getForeigners($db, $T2, '', 'foreign');
  32     if (isset($existrel_foreign[$F2])
  33         && isset($existrel_foreign[$F2]['constraint'])
  34     ) {
  35          PMD_return_new(0, __('Error: relation already exists.'));
  36     }
  37     // note: in InnoDB, the index does not requires to be on a PRIMARY
  38     // or UNIQUE key
  39     // improve: check all other requirements for InnoDB relations
  40     $result = PMA_DBI_query(
  41         'SHOW INDEX FROM ' . PMA_Util::backquote($db)
  42         . '.' . PMA_Util::backquote($T1) . ';'
  43     );
  44     $index_array1 = array(); // will be use to emphasis prim. keys in the table view
  45     while ($row = PMA_DBI_fetch_assoc($result)) {
  46         $index_array1[$row['Column_name']] = 1;
  47     }
  48     PMA_DBI_free_result($result);
  49
  50     $result = PMA_DBI_query(
  51         'SHOW INDEX FROM ' . PMA_Util::backquote($db)
  52         . '.' . PMA_Util::backquote($T2) . ';'
  53     );
  54     $index_array2 = array(); // will be used to emphasis prim. keys in the table view
  55     while ($row = PMA_DBI_fetch_assoc($result)) {
  56         $index_array2[$row['Column_name']] = 1;
  57     }
  58     PMA_DBI_free_result($result);
  59
  60     if (! empty($index_array1[$F1]) && ! empty($index_array2[$F2])) {
  61         $upd_query  = 'ALTER TABLE ' . PMA_Util::backquote($db)
  62             . '.' . PMA_Util::backquote($T2)
  63             . ' ADD FOREIGN KEY ('
  64             . PMA_Util::backquote($F2) . ')'
  65             . ' REFERENCES '
  66             . PMA_Util::backquote($db) . '.'
  67             . PMA_Util::backquote($T1) . '('
  68             . PMA_Util::backquote($F1) . ')';
  69
  70         if ($on_delete != 'nix') {
  71             $upd_query   .= ' ON DELETE ' . $on_delete;
  72         }
  73         if ($on_update != 'nix') {
  74             $upd_query   .= ' ON UPDATE ' . $on_update;
  75         }
  76         $upd_query .= ';';
  77         PMA_DBI_tryQuery($upd_query) or PMD_return_new(0, __('Error: Relation not added.'));
  78         PMD_return_new(1, __('FOREIGN KEY relation added'));
  79     }
  80 } else { // internal (pmadb) relation
  81     if ($GLOBALS['cfgRelation']['relwork'] == false) {
  82         PMD_return_new(0, __('Error: Relational features are disabled!'));
  83     } else {
  84         // no need to recheck if the keys are primary or unique at this point,
  85         // this was checked on the interface part
  86
  87         $q  = 'INSERT INTO ' . PMA_Util::backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_Util::backquote($cfgRelation['relation'])
  88                             . '(master_db, master_table, master_field, foreign_db, foreign_table, foreign_field)'
  89                             . ' values('
  90                             . '\'' . PMA_Util::sqlAddSlashes($db) . '\', '
  91                             . '\'' . PMA_Util::sqlAddSlashes($T2) . '\', '
  92                             . '\'' . PMA_Util::sqlAddSlashes($F2) . '\', '
  93                             . '\'' . PMA_Util::sqlAddSlashes($db) . '\', '
  94                             . '\'' . PMA_Util::sqlAddSlashes($T1) . '\','
  95                             . '\'' . PMA_Util::sqlAddSlashes($F1) . '\')';
  96
  97         if (PMA_queryAsControlUser($q, false, PMA_DBI_QUERY_STORE)) {
  98             PMD_return_new(1, __('Internal relation added'));
  99         } else {
 100             PMD_return_new(0, __('Error: Relation not added.'));
 101         }
 102     }
 103 }
 104
 105 function PMD_return_new($b,$ret)
 106 {
 107     global $db,$T1,$F1,$T2,$F2;
 108     header("Content-Type: text/xml; charset=utf-8");
 109     header("Cache-Control: no-cache");
 110     die('<root act="relation_new" return="'.$ret.'" b="'.$b.
 111     '" DB1="'.urlencode($db).
 112     '" T1="'.urlencode($T1).
 113     '" F1="'.urlencode($F1).
 114     '" DB2="'.urlencode($db).
 115     '" T2="'.urlencode($T2).
 116     '" F2="'.urlencode($F2).
 117     '"></root>');
 118 }
 119 ?>