query("ALTER TABLE " . idf_escape($_GET["foreign"]) . " DROP FOREIGN KEY " . idf_escape($_GET["name"])) && $_POST["drop"]) {
redirect($SELF . "table=" . urlencode($_GET["foreign"]), lang('Foreign key has been dropped.'));
}
}
$source = array_filter($_POST["source"], 'strlen');
ksort($source);
$target = array();
foreach ($source as $key => $val) {
$target[$key] = $_POST["target"][$key];
}
if ($mysql->query("
ALTER TABLE " . idf_escape($_GET["foreign"]) . " ADD FOREIGN KEY
" . (strlen($_GET["name"]) ? idf_escape($_GET["name"]) : "") . "
(" . implode(", ", array_map('idf_escape', $source)) . ")
REFERENCES " . idf_escape($_POST["table"]) . "
(" . implode(", ", array_map('idf_escape', $target)) . ")
" . (in_array($_POST["on_delete"], $on_actions) ? "ON DELETE $_POST[on_delete]" : "") . "
" . (in_array($_POST["on_update"], $on_actions) ? "ON UPDATE $_POST[on_update]" : "") . "
")) {
redirect($SELF . "table=" . urlencode($_GET["foreign"]), (strlen($_GET["name"]) ? lang('Foreign key has been altered.') : lang('Foreign key has been created.')));
}
$error = $mysql->error;
}
page_header(lang('Foreign key') . ": " . htmlspecialchars($_GET["foreign"]));
$tables = array();
$result = $mysql->query("SHOW TABLE STATUS");
while ($row = $result->fetch_assoc()) {
if ($row["Engine"] == "InnoDB") {
$tables[] = $row["Name"];
}
}
$result->free();
if ($_POST) {
$row = $_POST;
ksort($row["source"]);
if ($_POST["add"]) {
$row["source"][] = "";
} elseif ($_POST["change"] || $_POST["change-js"]) {
$row["target"] = array();
} else {
echo "" . lang('Unable to operate foreign keys') . ": " . htmlspecialchars($error) . "
\n";
}
} elseif (strlen($_GET["name"])) {
$foreign_keys = foreign_keys($_GET["foreign"]);
$row = $foreign_keys[$_GET["name"]];
} else {
$row = array("table" => $_GET["foreign"], "source" => array(""));
}
$source = get_vals("SHOW COLUMNS FROM " . idf_escape($_GET["foreign"])); //! no text and blob
$target = ($_GET["foreign"] === $row["table"] ? $source : get_vals("SHOW COLUMNS FROM " . idf_escape($row["table"])));
?>