$val) {
$target[$key] = $_POST["target"][$key];
}
query_redirect("ALTER TABLE " . table($TABLE)
. ($_GET["name"] != "" ? "\nDROP FOREIGN KEY " . idf_escape($_GET["name"]) . "," : "")
. "\nADD FOREIGN KEY (" . implode(", ", array_map('idf_escape', $source)) . ") REFERENCES " . table($_POST["table"]) . " (" . implode(", ", array_map('idf_escape', $target)) . ")" //! reuse $_GET["name"] - check in older MySQL versions
. (ereg("^($on_actions)\$", $_POST["on_delete"]) ? " ON DELETE $_POST[on_delete]" : "")
. (ereg("^($on_actions)\$", $_POST["on_update"]) ? " ON UPDATE $_POST[on_update]" : "")
, ME . "table=" . urlencode($TABLE), ($_GET["name"] != "" ? lang('Foreign key has been altered.') : lang('Foreign key has been created.')));
$error = lang('Source and target columns must have the same data type, there must be an index on the target columns and referenced data must exist.') . "
$error"; //! no partitioning
}
}
page_header(lang('Foreign key'), $error, array("table" => $TABLE), $TABLE);
$row = array("table" => $TABLE, "source" => array(""));
if ($_POST) {
$row = $_POST;
ksort($row["source"]);
if ($_POST["add"]) {
$row["source"][] = "";
} elseif ($_POST["change"] || $_POST["change-js"]) {
$row["target"] = array();
}
} elseif ($_GET["name"] != "") {
$foreign_keys = foreign_keys($TABLE);
$row = $foreign_keys[$_GET["name"]];
$row["source"][] = "";
}
$source = array_keys(fields($TABLE)); //! no text and blob
$target = ($TABLE === $row["table"] ? $source : array_keys(fields($row["table"])));
$referencable = array();
foreach (table_status() as $name => $table_status) {
if (fk_support($table_status)) {
$referencable[] = $name;
}
}
?>