$val) {
$target[$key] = $row["target"][$key];
}
query_redirect("ALTER TABLE " . table($TABLE)
. ($name != "" ? "\nDROP " . ($jush == "sql" ? "FOREIGN KEY " : "CONSTRAINT ") . idf_escape($name) . "," : "")
. "\nADD FOREIGN KEY (" . implode(", ", array_map('idf_escape', $source)) . ") REFERENCES " . table($row["table"]) . " (" . implode(", ", array_map('idf_escape', $target)) . ")" //! reuse $name - check in older MySQL versions
. (preg_match("~^($on_actions)\$~", $row["on_delete"]) ? " ON DELETE $row[on_delete]" : "")
. (preg_match("~^($on_actions)\$~", $row["on_update"]) ? " ON UPDATE $row[on_update]" : "")
, ME . "table=" . urlencode($TABLE), ($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" => $TABLE), h($TABLE));
if ($_POST) {
ksort($row["source"]);
if ($_POST["add"]) {
$row["source"][] = "";
} elseif ($_POST["change"] || $_POST["change-js"]) {
$row["target"] = array();
}
} elseif ($name != "") {
$foreign_keys = foreign_keys($TABLE);
$row = $foreign_keys[$name];
$row["source"][] = "";
} else {
$row["table"] = $TABLE;
$row["source"] = array("");
}
$source = array_keys(fields($TABLE)); //! no text and blob
$target = ($TABLE === $row["table"] ? $source : array_keys(fields($row["table"])));
$referencable = array_keys(array_filter(table_status('', true), 'fk_support'));
?>