From 7f4b6dfe70f07f32193916d97ae04bc7ab7f059c Mon Sep 17 00:00:00 2001
From: Simey Lameze <simey@moodle.com>
Date: Wed, 31 Jan 2018 13:43:05 +0800
Subject: [PATCH] MDL-61133 core_question: tags form and fragment callback

---
 question/lib.php            | 67 +++++++++++++++++++++++++++++++++++++
 question/type/tags_form.php | 61 +++++++++++++++++++++++++++++++++
 2 files changed, 128 insertions(+)
 create mode 100644 question/lib.php
 create mode 100644 question/type/tags_form.php

diff --git a/question/lib.php b/question/lib.php
new file mode 100644
index 00000000000..5c04b33831d
--- /dev/null
+++ b/question/lib.php
@@ -0,0 +1,67 @@
+<?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/>.
+
+/**
+ * Question related functions.
+ *
+ * This file was created just because Fragment API expects callbacks to be defined on lib.php.
+ *
+ * Please, do not add new functions to this file.
+ *
+ * @package   core_question
+ * @copyright 2018 Simey Lameze <simey@moodle.com>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Question tags fragment callback.
+ *
+ * @param array $args Arguments to the form.
+ * @return null|string The rendered form.
+ */
+function core_question_output_fragment_tags_form($args) {
+
+    if (!empty($args['id'])) {
+        global $CFG, $DB;
+        require_once($CFG->dirroot . '/question/type/tags_form.php');
+        require_once($CFG->libdir . '/questionlib.php');
+        $id = clean_param($args['id'], PARAM_INT);
+
+        $question = $DB->get_record('question', ['id' => $id]);
+        $category = $DB->get_record('question_categories', array('id' => $question->category));
+        $context = \context::instance_by_id($category->contextid);
+
+        $toform = new stdClass();
+        $toform->id = $question->id;
+        $toform->questioncategory = $category->name;
+        $toform->questionname = $question->name;
+        $toform->categoryid = $category->id;
+        $toform->contextid = $category->contextid;
+        $toform->context = $context->get_context_name();
+
+        if (core_tag_tag::is_enabled('core_question', 'question')) {
+            $toform->tags = core_tag_tag::get_item_tags_array('core_question', 'question', $question->id);
+        }
+
+        $canedit = question_has_capability_on($question, 'edit');
+        $mform = new \core_question\form\tags(null, null, 'post', '', null, $canedit, $toform);
+        $mform->set_data($toform);
+
+        return $mform->render();
+    }
+}
diff --git a/question/type/tags_form.php b/question/type/tags_form.php
new file mode 100644
index 00000000000..f2a59c66df7
--- /dev/null
+++ b/question/type/tags_form.php
@@ -0,0 +1,61 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * The mform to manage question tags.
+ *
+ * @package   core_question
+ * @copyright 2018 Simey Lameze <simey@moodle.com>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace core_question\form;
+
+defined('MOODLE_INTERNAL') || die();
+
+require_once($CFG->dirroot . '/lib/formslib.php');
+
+/**
+ * The mform class for  manage question tags.
+ *
+ * @copyright 2018 Simey Lameze <simey@moodle.com>
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class tags extends \moodleform {
+
+    /**
+     * The form definition
+     */
+    public function definition() {
+        $mform = $this->_form;
+
+        $mform->addElement('hidden', 'id');
+        $mform->setType('id', PARAM_INT);
+
+        $mform->addElement('hidden', 'categoryid');
+        $mform->setType('categoryid', PARAM_INT);
+
+        $mform->addElement('hidden', 'contextid');
+        $mform->setType('contextid', PARAM_INT);
+
+        $mform->addElement('static', 'questionname', get_string('questionname', 'question'));
+        $mform->addElement('static', 'questioncategory', get_string('categorycurrent', 'question'));
+        $mform->addElement('static', 'context', '');
+
+        $mform->addElement('tags', 'tags', get_string('tags'),
+                ['itemtype' => 'question', 'component' => 'core_question']);
+    }
+}
-- 
2.17.1