Viewing file:  pmd_relation_new.php (4.46 KB) -rw-rw-rw-
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* PMD handler for creating new relation
*
* @package PhpMyAdmin-Designer
*/
/**
*
*/
require_once './libraries/common.inc.php';
PMA_Response::getInstance()->disable();
require_once 'libraries/pmd_common.php';
$die_save_pos = 0;
require_once 'pmd_save_pos.php';
extract($_POST, EXTR_SKIP);
$tables = $GLOBALS['dbi']->getTablesFull($db, $T1);
$type_T1 = strtoupper($tables[$T1]['ENGINE']);
$tables = $GLOBALS['dbi']->getTablesFull($db, $T2);
$type_T2 = strtoupper($tables[$T2]['ENGINE']);
// native foreign key
if (PMA_Util::isForeignKeySupported($type_T1)
&& PMA_Util::isForeignKeySupported($type_T2)
&& $type_T1 == $type_T2
) {
// relation exists?
$existrel_foreign = PMA_getForeigners($db, $T2, '', 'foreign');
if (isset($existrel_foreign[$F2])
&& isset($existrel_foreign[$F2]['constraint'])
) {
PMD_Return_new(0, __('Error: relation already exists.'));
}
// note: in InnoDB, the index does not requires to be on a PRIMARY
// or UNIQUE key
// improve: check all other requirements for InnoDB relations
$result = $GLOBALS['dbi']->query(
'SHOW INDEX FROM ' . PMA_Util::backquote($db)
. '.' . PMA_Util::backquote($T1) . ';'
);
$index_array1 = array(); // will be use to emphasis prim. keys in the table view
while ($row = $GLOBALS['dbi']->fetchAssoc($result)) {
$index_array1[$row['Column_name']] = 1;
}
$GLOBALS['dbi']->freeResult($result);
$result = $GLOBALS['dbi']->query(
'SHOW INDEX FROM ' . PMA_Util::backquote($db)
. '.' . PMA_Util::backquote($T2) . ';'
);
// will be used to emphasis prim. keys in the table view
$index_array2 = array();
while ($row = $GLOBALS['dbi']->fetchAssoc($result)) {
$index_array2[$row['Column_name']] = 1;
}
$GLOBALS['dbi']->freeResult($result);
if (! empty($index_array1[$F1]) && ! empty($index_array2[$F2])) {
$upd_query = 'ALTER TABLE ' . PMA_Util::backquote($db)
. '.' . PMA_Util::backquote($T2)
. ' ADD FOREIGN KEY ('
. PMA_Util::backquote($F2) . ')'
. ' REFERENCES '
. PMA_Util::backquote($db) . '.'
. PMA_Util::backquote($T1) . '('
. PMA_Util::backquote($F1) . ')';
if ($on_delete != 'nix') {
$upd_query .= ' ON DELETE ' . $on_delete;
}
if ($on_update != 'nix') {
$upd_query .= ' ON UPDATE ' . $on_update;
}
$upd_query .= ';';
$GLOBALS['dbi']->tryQuery($upd_query)
|| PMD_Return_new(0, __('Error: Relation could not be added!'));
PMD_Return_new(1, __('FOREIGN KEY relation has been added.'));
}
} else { // internal (pmadb) relation
if ($GLOBALS['cfgRelation']['relwork'] == false) {
PMD_Return_new(0, __('Error: Relational features are disabled!'));
} else {
// no need to recheck if the keys are primary or unique at this point,
// this was checked on the interface part
$q = 'INSERT INTO '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['relation'])
. '(master_db, master_table, master_field,'
. 'foreign_db, foreign_table, foreign_field)'
. ' values('
. '\'' . PMA_Util::sqlAddSlashes($db) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($T2) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($F2) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($db) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($T1) . '\','
. '\'' . PMA_Util::sqlAddSlashes($F1) . '\')';
if (PMA_queryAsControlUser($q, false, PMA_DatabaseInterface::QUERY_STORE)) {
PMD_Return_new(1, __('Internal relation has been added.'));
} else {
PMD_Return_new(0, __('Error: Relation could not be added!'));
}
}
}
/**
* Send xml
*
* @param string $b Value of attribute "b"
* @param string $ret Value of attribute "return"
*
* @return void
*/
function PMD_Return_new($b,$ret)
{
global $db,$T1,$F1,$T2,$F2;
header("Content-Type: text/xml; charset=utf-8");
header("Cache-Control: no-cache");
die('<root act="relation_new" return="' . $ret . '" b="' . $b .
'" DB1="' . urlencode($db) .
'" T1="' . urlencode($T1) .
'" F1="' . urlencode($F1) .
'" DB2="' . urlencode($db) .
'" T2="' . urlencode($T2) .
'" F2="' . urlencode($F2) .
'"></root>');
}
?>
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