Plugins: Add backward-keys

diff --git a/editor/include/adminer.inc.php b/editor/include/adminer.inc.php
index 508c7dae5f9d79b2ec337013aa78db598656af0a..bab09e501b4a9dfa36fdba3276153f9debd8ce00 100644 (file)
--- a/editor/include/adminer.inc.php
+++ b/editor/include/adminer.inc.php
@@ -121,7 +121,7 @@ FROM information_schema.KEY_COLUMN_USAGE
 WHERE TABLE_SCHEMA = " . q($this->database()) . "
 AND REFERENCED_TABLE_SCHEMA = " . q($this->database()) . "
 AND REFERENCED_TABLE_NAME = " . q($table) . "
-ORDER BY ORDINAL_POSITION", null, "") as $row //! requires MySQL 5
+ORDER BY ORDINAL_POSITION", null, "") as $row
                ) {
                        $return[$row["TABLE_NAME"]]["keys"][$row["CONSTRAINT_NAME"]][$row["COLUMN_NAME"]] = $row["REFERENCED_COLUMN_NAME"];
                }

diff --git a/plugins/backward-keys.php b/plugins/backward-keys.php
new file mode 100644 (file)
index 0000000..a0069ec
--- /dev/null
+++ b/plugins/backward-keys.php
@@ -0,0 +1,55 @@
+<?php
+
+/** Display links to tables referencing current row, same as in Adminer Editor
+* @link https://www.adminer.org/static/plugins/backward-keys.png
+* @link https://www.adminer.org/plugins/#use
+* @author Jakub Vrana, https://www.vrana.cz/
+* @license https://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
+* @license https://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
+*/
+class AdminerBackwardKeys {
+       // this is copy-pasted from Adminer Editor
+
+       function backwardKeys($table, $tableName) {
+               $return = array();
+               foreach (
+                       Adminer\get_rows($q = "SELECT TABLE_NAME, CONSTRAINT_NAME, COLUMN_NAME, REFERENCED_COLUMN_NAME
+FROM information_schema.KEY_COLUMN_USAGE
+WHERE TABLE_SCHEMA = " . Adminer\q(Adminer\DB) . "
+AND REFERENCED_TABLE_SCHEMA = " . Adminer\q(Adminer\DB) . "
+AND REFERENCED_TABLE_NAME = " . Adminer\q($table) . "
+ORDER BY ORDINAL_POSITION", null, "") as $row
+               ) {
+                       $return[$row["TABLE_NAME"]]["keys"][$row["CONSTRAINT_NAME"]][$row["COLUMN_NAME"]] = $row["REFERENCED_COLUMN_NAME"];
+               }
+               foreach ($return as $key => $val) {
+                       $name = Adminer\adminer()->tableName(Adminer\table_status($key, true));
+                       if ($name != "") {
+                               $search = preg_quote($tableName);
+                               $separator = '(:|\s*-)?\s+';
+                               $return[$key]["name"] = (preg_match("(^$search$separator(.+)|^(.+?)$separator$search\$)iu", $name, $match) ? $match[2] . $match[3] : $name);
+                       } else {
+                               unset($return[$key]);
+                       }
+               }
+               return $return;
+       }
+
+       function backwardKeysPrint($backwardKeys, $row) {
+               foreach ($backwardKeys as $table => $backwardKey) {
+                       foreach ($backwardKey["keys"] as $cols) {
+                               $link = Adminer\ME . 'select=' . urlencode($table);
+                               $i = 0;
+                               foreach ($cols as $column => $val) {
+                                       $link .= Adminer\where_link($i++, $column, $row[$val]);
+                               }
+                               echo "<a href='" . Adminer\h($link) . "'>" . Adminer\h($backwardKey["name"]) . "</a>";
+                               $link = Adminer\ME . 'edit=' . urlencode($table);
+                               foreach ($cols as $column => $val) {
+                                       $link .= "&set" . urlencode("[" . Adminer\bracket_escape($column) . "]") . "=" . urlencode($row[$val]);
+                               }
+                               echo "<a href='" . Adminer\h($link) . "' title='" . Adminer\lang('New item') . "'>+</a> ";
+                       }
+               }
+       }
+}