Plugin: Use <select> on custom user types in psql

plugins/enum-types.php

@@ -0,0 +1,50 @@
+<?php
+
+/** Use <select><option> for enum edit instead of regular input text on enum type in PostgreSQL
+ * @link https://www.adminer.org/plugins/#use
+ * @author Adam Kuśmierz, http://kusmierz.be/
+ * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
+ * @license http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
+ */
+class AdminerEnumTypes {
+	var $_types = null;
+
+	function editInput($table, $field, $attrs, $value) {
+		// PostgreSQL only
+		if (!in_array(strtolower(connection()->extension), array('pgsql', 'pdo_pgsql'))) {
+			return;
+		}
+
+		// read types and "cache" it
+		if (is_null($this->_types)) {
+			$types = types();
+			$this->_types = array();
+
+			foreach ($types as $type) {
+				$values = get_vals("SELECT unnest(enum_range(NULL::$type))::text AS value");
+				if (!empty($values) && is_array($values)) {
+					$this->_types[$type] = $values;
+				}
+			}
+		}
+
+		if (array_key_exists($field["type"], $this->_types)) {
+			$options = $this->_types[$field["type"]];
+			$options = array_combine($options, $options);
+			$selected = $value;
+
+			if ($field["null"]) {
+				$options = array("" => array("" => "NULL")) + $options;
+				if ($value === null && !isset($_GET["select"])) {
+					$selected = "";
+				}
+			}
+			if (isset($_GET["select"])) {
+				$options = array("" => array(-1 => lang('original'))) + $options;
+			}
+
+			return "<select$attrs>" . optionlist($options, (string) $selected, 1) . "</select>";
+		}
+	}
+
+}