Add unfreeze button to lifecycle block

block_lifecycle.php

@@ -79,6 +79,11 @@ public function get_content() {
             if (manager::should_show_auto_freezing_preferences($courseid)) {
                 $html .= $renderer->fetch_block_content($courseid);
             }
+            if (manager::is_course_frozen($courseid)) {
+                if (has_capability('block/lifecycle:unfreezecoursecontext', $context)) {
+                    $html .= $renderer->show_unfreeze_button($courseid);
+                }
+            }
 
             $this->content->text = $html;
 

db/access.php

@@ -57,4 +57,12 @@
             'manager' => CAP_ALLOW,
         ],
     ],
+    'block/lifecycle:unfreezecoursecontext' => [
+        'captype' => 'read',
+        'contextlevel' => CONTEXT_COURSE,
+        'archetypes' => [
+            'editingteacher' => CAP_ALLOW,
+            'manager' => CAP_ALLOW,
+        ],
+    ],
 ];

lang/en/block_lifecycle.php

@@ -30,6 +30,7 @@
 $string['error:cannotgetscheduledfreezedate'] = 'Could not get the automatically suggested date.';
 $string['error:updatepreferencessuccess'] = 'Auto read only settings updated successfully.';
 $string['error:updatepreferencesfailed'] = 'Failed to update read only settings.';
+$string['error:courseisnotreadonly'] = 'This course is not Read Only. No need to unfreeze.';
 $string['generalsettings'] = 'General Settings';
 $string['help:togglefreezing'] = 'Disable Automatic Read-Only';
 $string['help:togglefreezing_help'] = 'Disable Automatic Read-Only.';
@@ -56,5 +57,8 @@
 $string['settings:weeksdelay'] = 'Weeks Delay';
 $string['settings:weeksdelay:desc'] = 'The number of weeks after course end date to delay context freezing';
 $string['task:freezecontext'] = 'Task to freeze course context';
+$string['button:unfreezecoursecontext'] = 'Unfreeze course';
+$string['lifecycle:unfreezecoursecontext'] = 'Unfreeze course context';
+
 
 

renderer.php

@@ -151,4 +151,22 @@ public function fetch_course_read_only_notification(): string {
 
         return $content;
     }
+
+    /**
+     * Return the html for 'Unfreeze button'.
+     *
+     * @param int $courseid
+     * @return string
+     * @throws coding_exception
+     */
+    public function show_unfreeze_button(int $courseid): string {
+        $context = context_course::instance($courseid);
+        $freezeurl = new moodle_url('/blocks/lifecycle/unfreeze.php', ['id' => $context->id]);
+        return html_writer::div(
+            '<a href="' . $freezeurl .' " class="btn btn-primary">' .
+            get_string('button:unfreezecoursecontext', 'block_lifecycle') .
+            '</a>'
+        );
+
+    }
 }

unfreeze.php

@@ -0,0 +1,90 @@
+<?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/>.
+
+/**
+ * Unfreeze a course context.
+ *
+ * @package    block_lifecycle
+ * @copyright  2024 onwards University College London {@link https://www.ucl.ac.uk/}
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @author     Alex Yeung <[email protected]>
+ */
+require_once('../../config.php');
+require_once($CFG->libdir . '/adminlib.php');
+
+// Parameters.
+$contextid = required_param('id', PARAM_INT);
+$confirm = optional_param('confirm', null, PARAM_INT);
+$returnurl = optional_param('returnurl', null, PARAM_LOCALURL);
+
+// Set page URL.
+$PAGE->set_url('/blocks/lifecycle/unfreeze.php', ['id' => $contextid]);
+
+// Get context information.
+list($context, $course, $cm) = get_context_info_array($contextid);
+
+// Check user is logged in and enrolled in the course.
+require_login($course, false);
+
+// Check permissions.
+require_capability('block/lifecycle:unfreezecoursecontext', $context);
+
+// Check if the context is locked. We only allow unlocking of locked contexts.
+if (!$context->locked) {
+    throw new moodle_exception('error:courseisnotreadonly', 'block_lifecycle');
+}
+
+// It is a course context and not the site course.
+if ($course && $course->id != SITEID) {
+    $PAGE->set_pagelayout('admin');
+    $PAGE->navigation->clear_cache();
+
+    if (null !== $confirm && confirm_sesskey()) {
+        // Set context lock status.
+        $context->set_locked(!empty($confirm));
+
+        // Prepare message.
+        $lockmessage = '';
+
+        $a = (object)['contextname' => $context->get_context_name()];
+        $lockmessage = get_string('managecontextlockunlocked', 'admin', $a);
+
+        // Set return URL.
+        $returnurl = empty($returnurl) ? $context->get_url() : new moodle_url($returnurl);
+
+        // Redirect with message.
+        redirect($returnurl, $lockmessage);
+    }
+
+    // Set page title and heading.
+    $heading = get_string('managecontextlock', 'admin');
+    $PAGE->set_title($heading);
+    $PAGE->set_heading($heading);
+
+    // Display header.
+    echo $OUTPUT->header();
+
+    // Display confirmation message.
+    $confirmstring = get_string('confirmcontextunlock', 'admin', (object)['contextname' => $context->get_context_name()]);
+    $confirmurl = new moodle_url($PAGE->url, ['confirm' => 0]);
+    if (!empty($returnurl)) {
+        $confirmurl->param('returnurl', $returnurl);
+    }
+    echo $OUTPUT->confirm($confirmstring, $confirmurl, $context->get_url());
+
+    // Display footer.
+    echo $OUTPUT->footer();
+}

version.php

@@ -25,7 +25,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2022120800;
+$plugin->version   = 2024021501;
 $plugin->release   = '0.1';
 $plugin->maturity  = MATURITY_ALPHA;
 $plugin->requires  = 2020061512;