Roles, capabilities and contexts

db/access.php

@@ -0,0 +1,43 @@
+<?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/>.
+
+/**
+ * Capabilities tool_guillogo.
+ *
+ * @package    tool_guillogo
+ * @author     Guillermo Gomez Arias <[email protected]>
+ * @copyright  2020 Guillermo Gomez Arias
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+$capabilities = [
+    'tool/guillogo:view' => [
+        'captype' => 'write',
+        'contextlevel' => CONTEXT_COURSE,
+        'archetypes' => [
+            'editingteacher' => CAP_ALLOW,
+            'student' => CAP_ALLOW,
+
+        ],
+    ],
+    'tool/guillogo:edit' => [
+        'captype' => 'write',
+        'contextlevel' => CONTEXT_COURSE,
+        'archetypes' => [
+            'editingteacher' => CAP_ALLOW,
+        ],
+    ],
+];

index.php

@@ -26,13 +26,16 @@
 use tool_guillogo\local\table\guillogo_table;
 
 require_once(__DIR__ . '/../../../config.php');
+require_once('../../../lib/tablelib.php');
+
 $courseid = required_param('id', PARAM_INT );
 
 $url = new moodle_url('/admin/tool/guillogo/index.php');
 $title = get_string('pluginname', 'tool_guillogo');
-$context = context_system::instance();
+$context = context_course::instance($courseid);
 
 require_login($courseid);
+require_capability('tool/guillogo:view', $context);
 
 // Set up the page.
 $PAGE->set_context($context);

lang/en/tool_guillogo.php

@@ -32,4 +32,7 @@
 $string['completed'] = 'Completed';
 $string['priority'] = 'Priority';
 $string['timecreated'] = 'Time created';
-$string['timemodified'] = 'Time modified';
+$string['timemodified'] = 'Time modified';
+
+$string['guillogo:view'] = 'View';
+$string['guillogo:edit'] = 'Edit';

lib.php

@@ -29,17 +29,20 @@
  * This function extends the navigation with the tool items.
  *
  * @param navigation_node $navigation The navigation node to extend
- * @param stdClass        $course     The course to object for the tool
- * @param context         $context    The context of the course
+ * @param stdClass $course The course to object for the tool
+ * @param context $context The context of the course
+ * @throws coding_exception|moodle_exception
  */
 function tool_guillogo_extend_navigation_course($navigation, $course, $context) {
 
-    $navigation->add(
-        get_string('pluginname', 'tool_guillogo'),
-        new moodle_url('/admin/tool/guillogo/index.php', ['id' => $course->id]),
-        navigation_node::TYPE_SETTING,
-        get_string('pluginname', 'tool_guillogo'),
-        'guillogo',
-        new pix_icon('icon', '', 'tool_guillogo')
-    );
+    if (has_capability('tool/guillogo:view', $context)) {
+        $navigation->add(
+            get_string('pluginname', 'tool_guillogo'),
+            new moodle_url('/admin/tool/guillogo/index.php', ['id' => $course->id]),
+            navigation_node::TYPE_SETTING,
+            get_string('pluginname', 'tool_guillogo'),
+            'guillogo',
+            new pix_icon('icon', '', 'tool_guillogo')
+        );
+    }
 }

version.php

@@ -25,7 +25,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version = 2020122806;
+$plugin->version = 2020122807;
 $plugin->requires = 2020060900;
 $plugin->component = 'tool_guillogo';
 $plugin->release = '1.4';