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