MDL-59913 Global search: Allow search of non-enrolled courses

admin/settings/plugins.php

@@ -557,13 +557,21 @@
     $temp->add(new admin_setting_heading('searchengineheading', new lang_string('searchengine', 'admin'), ''));
     $temp->add(new admin_setting_configselect('searchengine',
                                 new lang_string('selectsearchengine', 'admin'), '', 'solr', $engines));
-    $temp->add(new admin_setting_heading('searchindexingheading', new lang_string('searchoptions', 'admin'), ''));
+    $temp->add(new admin_setting_heading('searchoptionsheading', new lang_string('searchoptions', 'admin'), ''));
     $temp->add(new admin_setting_configcheckbox('searchindexwhendisabled',
             new lang_string('searchindexwhendisabled', 'admin'), new lang_string('searchindexwhendisabled_desc', 'admin'),
             0));
     $temp->add(new admin_setting_configduration('searchindextime',
             new lang_string('searchindextime', 'admin'), new lang_string('searchindextime_desc', 'admin'),
             600));
+    $options = [
+        0 => new lang_string('searchallavailablecourses_off', 'admin'),
+        1 => new lang_string('searchallavailablecourses_on', 'admin')
+    ];
+    $temp->add(new admin_setting_configselect('searchallavailablecourses',
+            new lang_string('searchallavailablecourses', 'admin'),
+            new lang_string('searchallavailablecourses_desc', 'admin'),
+            0, $options));
 
     $ADMIN->add('searchplugins', $temp);
     $ADMIN->add('searchplugins', new admin_externalpage('searchareas', new lang_string('searchareas', 'admin'),

lang/en/admin.php

@@ -981,6 +981,10 @@
 $string['savechanges'] = 'Save changes';
 $string['scssinvalid'] = 'SCSS code is not valid, fails with: {$a}';
 $string['search'] = 'Search';
+$string['searchallavailablecourses'] = 'Searchable courses';
+$string['searchallavailablecourses_off'] = 'Search within enrolled courses only';
+$string['searchallavailablecourses_on'] = 'Search within all courses the user can access';
+$string['searchallavailablecourses_desc'] = 'In some situations the search engine may not work when searching across a large number of courses. Set to search only enrolled courses if you need to restrict the number of courses searched.';
 $string['searchalldeleted'] = 'All indexed contents have been deleted';
 $string['searchareaenabled'] = 'Search area enabled';
 $string['searchareadisabled'] = 'Search area disabled';

search/classes/manager.php

@@ -379,7 +379,8 @@ protected function get_areas_user_accesses($limitcourseids = false) {
         }
 
         // Get the courses where the current user has access.
-        $courses = enrol_get_my_courses(array('id', 'cacherev'));
+        $courses = enrol_get_my_courses(array('id', 'cacherev'), 'id', 0, [],
+                (bool)get_config('core', 'searchallavailablecourses'));
 
         if (empty($limitcourseids) || in_array(SITEID, $limitcourseids)) {
             $courses[SITEID] = get_course(SITEID);

search/tests/manager_test.php

@@ -463,6 +463,89 @@ public function test_search_user_accesses_blocks() {
         $this->assertEquals($contexts['block_html-content'], $limitedcontexts['block_html-content']);
     }
 
+    /**
+     * Test get_areas_user_accesses with regard to the 'all available courses' config option.
+     *
+     * @return void
+     */
+    public function test_search_user_accesses_allavailable() {
+        global $DB, $CFG;
+
+        $this->resetAfterTest();
+
+        // Front page, including a forum.
+        $frontpage = $DB->get_record('course', array('id' => SITEID));
+        $forumfront = $this->getDataGenerator()->create_module('forum', array('course' => $frontpage->id));
+        $forumfrontctx = context_module::instance($forumfront->cmid);
+
+        // Course 1 does not allow guest access.
+        $course1 = $this->getDataGenerator()->create_course((object)array(
+                'enrol_guest_status_0' => ENROL_INSTANCE_DISABLED,
+                'enrol_guest_password_0' => ''));
+        $forum1 = $this->getDataGenerator()->create_module('forum', array('course' => $course1->id));
+        $forum1ctx = context_module::instance($forum1->cmid);
+
+        // Course 2 does not allow guest but is accessible by all users.
+        $course2 = $this->getDataGenerator()->create_course((object)array(
+                'enrol_guest_status_0' => ENROL_INSTANCE_DISABLED,
+                'enrol_guest_password_0' => ''));
+        $course2ctx = context_course::instance($course2->id);
+        $forum2 = $this->getDataGenerator()->create_module('forum', array('course' => $course2->id));
+        $forum2ctx = context_module::instance($forum2->cmid);
+        assign_capability('moodle/course:view', CAP_ALLOW, $CFG->defaultuserroleid, $course2ctx->id);
+
+        // Course 3 allows guest access without password.
+        $course3 = $this->getDataGenerator()->create_course((object)array(
+                'enrol_guest_status_0' => ENROL_INSTANCE_ENABLED,
+                'enrol_guest_password_0' => ''));
+        $forum3 = $this->getDataGenerator()->create_module('forum', array('course' => $course2->id));
+        $forum3ctx = context_module::instance($forum3->cmid);
+
+        // Student user is enrolled in course 1.
+        $student = $this->getDataGenerator()->create_user();
+        $this->getDataGenerator()->enrol_user($student->id, $course1->id, 'student');
+
+        // No access user is just a user with no permissions.
+        $noaccess = $this->getDataGenerator()->create_user();
+
+        // First test without the all available option.
+        $search = testable_core_search::instance();
+
+        // Admin user can access everything.
+        $this->setAdminUser();
+        $this->assertTrue($search->get_areas_user_accesses());
+
+        // No-access user can access only the front page forum.
+        $this->setUser($noaccess);
+        $contexts = $search->get_areas_user_accesses();
+        $this->assertEquals([$forumfrontctx->id], array_keys($contexts[$this->forumpostareaid]));
+
+        // Student can access the front page forum plus the enrolled one.
+        $this->setUser($student);
+        $contexts = $search->get_areas_user_accesses();
+        $this->assertEquals([$forum1ctx->id, $forumfrontctx->id],
+                array_keys($contexts[$this->forumpostareaid]));
+
+        // Now turn on the all available option.
+        set_config('searchallavailablecourses', 1);
+
+        // Admin user can access everything.
+        $this->setAdminUser();
+        $this->assertTrue($search->get_areas_user_accesses());
+
+        // No-access user can access the front page forum and course 2, 3.
+        $this->setUser($noaccess);
+        $contexts = $search->get_areas_user_accesses();
+        $this->assertEquals([$forum2ctx->id, $forum3ctx->id, $forumfrontctx->id],
+                array_keys($contexts[$this->forumpostareaid]));
+
+        // Student can access the front page forum plus the enrolled one plus courses 2, 3.
+        $this->setUser($student);
+        $contexts = $search->get_areas_user_accesses();
+        $this->assertEquals([$forum1ctx->id, $forum2ctx->id, $forum3ctx->id, $forumfrontctx->id],
+                array_keys($contexts[$this->forumpostareaid]));
+    }
+
     /**
      * test_is_search_area
      *