From 60ff81116b135989826c46d91ef7e22465804fe8 Mon Sep 17 00:00:00 2001
From: Bernhard Fischer <bernhard.johannes.fischer@gmail.com>
Date: Thu, 9 Jan 2025 13:10:45 +0100
Subject: [PATCH] Improvement: Add field controllers for text and textarea and
 return text controller as fallback. #774

---
 .../field/text/wbt_field_controller.php       | 57 +++++++++++++++++++
 .../field/textarea/wbt_field_controller.php   | 57 +++++++++++++++++++
 .../customfield/wbt_field_controller_info.php | 21 ++++++-
 3 files changed, 133 insertions(+), 2 deletions(-)
 create mode 100644 classes/local/customfield/field/text/wbt_field_controller.php
 create mode 100644 classes/local/customfield/field/textarea/wbt_field_controller.php

diff --git a/classes/local/customfield/field/text/wbt_field_controller.php b/classes/local/customfield/field/text/wbt_field_controller.php
new file mode 100644
index 0000000..231c776
--- /dev/null
+++ b/classes/local/customfield/field/text/wbt_field_controller.php
@@ -0,0 +1,57 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Extension of the customfield field controller for Wunderbyte table.
+ *
+ * @package    local_wunderbyte_table
+ * @copyright  2024 Wunderbyte GmbH <info@wunderbyte.at>
+ * @author     Bernhard Fischer-Sengseis
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace local_wunderbyte_table\local\customfield\field\text;
+
+// Important: Use the field controller for the right customfield.
+use customfield_text\field_controller;
+use local_wunderbyte_table\local\customfield\wbt_field_controller_base;
+
+/**
+ * Extension of the customfield field controller for Wunderbyte table.
+ *
+ * @package    local_wunderbyte_table
+ * @copyright  2024 Wunderbyte GmbH <info@wunderbyte.at>
+ * @author     Bernhard Fischer-Sengseis
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class wbt_field_controller extends field_controller implements wbt_field_controller_base {
+
+    /**
+     * Get the actual string value of the customfield.
+     *
+     * @param string $key
+     * @return string the string value
+     */
+    public function get_option_value_by_key(string $key): string {
+        global $DB;
+
+        if (!empty($key)) {
+            // For normal text fields we need format_string.
+            return format_string($key);
+        }
+        return '';
+    }
+}
diff --git a/classes/local/customfield/field/textarea/wbt_field_controller.php b/classes/local/customfield/field/textarea/wbt_field_controller.php
new file mode 100644
index 0000000..abf0d1a
--- /dev/null
+++ b/classes/local/customfield/field/textarea/wbt_field_controller.php
@@ -0,0 +1,57 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Extension of the customfield field controller for Wunderbyte table.
+ *
+ * @package    local_wunderbyte_table
+ * @copyright  2024 Wunderbyte GmbH <info@wunderbyte.at>
+ * @author     Bernhard Fischer-Sengseis
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace local_wunderbyte_table\local\customfield\field\textarea;
+
+// Important: Use the field controller for the right customfield.
+use customfield_textarea\field_controller;
+use local_wunderbyte_table\local\customfield\wbt_field_controller_base;
+
+/**
+ * Extension of the customfield field controller for Wunderbyte table.
+ *
+ * @package    local_wunderbyte_table
+ * @copyright  2024 Wunderbyte GmbH <info@wunderbyte.at>
+ * @author     Bernhard Fischer-Sengseis
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class wbt_field_controller extends field_controller implements wbt_field_controller_base {
+
+    /**
+     * Get the actual string value of the customfield.
+     *
+     * @param string $key
+     * @return string the string value
+     */
+    public function get_option_value_by_key(string $key): string {
+        global $DB;
+
+        if (!empty($key)) {
+            // For textarea we need format_text.
+            return format_text($key);
+        }
+        return '';
+    }
+}
diff --git a/classes/local/customfield/wbt_field_controller_info.php b/classes/local/customfield/wbt_field_controller_info.php
index e46f1e5..71a441a 100644
--- a/classes/local/customfield/wbt_field_controller_info.php
+++ b/classes/local/customfield/wbt_field_controller_info.php
@@ -60,7 +60,8 @@ public static function create(stdClass $record) {
         if (class_exists($class)) {
             return new $class($record->id, $record);
         }
-        return null;
+        // By default, we return the text controller.
+        return new \local_wunderbyte_table\local\customfield\field\text\wbt_field_controller($record->id, $record);
     }
 
     /**
@@ -96,7 +97,23 @@ public static function instantiate_by_shortnames(array $shortnames) {
     public static function get_instance_by_shortname(string $shortname) {
         if (!empty(self::$instances[$shortname])) {
             return self::$instances[$shortname];
+        } else {
+            global $DB;
+            $sql = "SELECT cf.shortname AS filtercolumn, cf.*
+                FROM {customfield_field} cf
+                WHERE cf.shortname = :shortname";
+            $params = ['shortname' => $shortname];
+            if ($record = $DB->get_record_sql($sql, $params)) {
+                // We only add the instance, if a field controller exists.
+                if ($instance = self::create($record)) {
+                    self::$instances[$record->shortname] = $instance;
+                    return $instance;
+                } else {
+                    return null;
+                }
+            } else {
+                return null;
+            }
         }
-        return null;
     }
 }