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<?php
$TABLE = $_GET["foreign"];
$name = $_GET["name"];
$row = $_POST;
if ($_POST && !$error && !$_POST["add"] && !$_POST["change"] && !$_POST["change-js"]) {
$message = ($_POST["drop"] ? lang('Foreign key has been dropped.') : ($name != "" ? lang('Foreign key has been altered.') : lang('Foreign key has been created.')));
$location = ME . "table=" . urlencode($TABLE);
$row["source"] = array_filter($row["source"], 'strlen');
ksort($row["source"]); // enforce input order
$target = array();
foreach ($row["source"] as $key => $val) {
$target[$key] = $row["target"][$key];
}
$row["target"] = $target;
if ($jush == "sqlite") {
queries_redirect($location, $message, recreate_table($TABLE, $TABLE, array(), array(), array(" $name" => ($_POST["drop"] ? "" : " " . format_foreign_key($row)))));
} else {
$alter = "ALTER TABLE " . table($TABLE);
$drop = "\nDROP " . ($jush == "sql" ? "FOREIGN KEY " : "CONSTRAINT ") . idf_escape($name);
if ($_POST["drop"]) {
query_redirect($alter . $drop, $location, $message);
} else {
query_redirect($alter . ($name != "" ? "$drop," : "") . "\nADD" . format_foreign_key($row), $location, $message);
$error = lang('Source and target columns must have the same data type, there must be an index on the target columns and referenced data must exist.') . "<br>$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"])));
$referencable = array_keys(array_filter(table_status('', true), 'fk_support'));
?>
<form action="" method="post">
<p>
<?php if ($row["db"] == "" && $row["ns"] == "") { ?>
<?php echo lang('Target table'); ?>:
<?php echo html_select("table", $referencable, $row["table"], "this.form['change-js'].value = '1'; this.form.submit();"); ?>
<input type="hidden" name="change-js" value="">
<noscript><p><input type="submit" name="change" value="<?php echo lang('Change'); ?>"></noscript>
<table cellspacing="0">
<thead><tr><th><?php echo lang('Source'); ?><th><?php echo lang('Target'); ?></thead>
<?php
$j = 0;
foreach ($row["source"] as $key => $val) {
echo "<tr>";
echo "<td>" . html_select("source[" . (+$key) . "]", array(-1 => "") + $source, $val, ($j == count($row["source"]) - 1 ? "foreignAddRow(this);" : 1));
echo "<td>" . html_select("target[" . (+$key) . "]", $target, $row["target"][$key]);
$j++;
}
?>
</table>
<p>
<?php echo lang('ON DELETE'); ?>: <?php echo html_select("on_delete", array(-1 => "") + explode("|", $on_actions), $row["on_delete"]); ?>
<?php echo lang('ON UPDATE'); ?>: <?php echo html_select("on_update", array(-1 => "") + explode("|", $on_actions), $row["on_update"]); ?>
<?php echo doc_link(array(
'sql' => "innodb-foreign-key-constraints.html",
'pgsql' => "sql-createtable.html#SQL-CREATETABLE-REFERENCES",
'mssql' => "ms174979.aspx",
'oracle' => "clauses002.htm#sthref2903",
)); ?>
<p>
<input type="submit" value="<?php echo lang('Save'); ?>">
<noscript><p><input type="submit" name="add" value="<?php echo lang('Add column'); ?>"></noscript>
<?php } ?>
<?php if ($name != "") { ?><input type="submit" name="drop" value="<?php echo lang('Drop'); ?>"<?php echo confirm(); ?>><?php } ?>
<input type="hidden" name="token" value="<?php echo $token; ?>">
</form>