public function lock_submission($userid) {
        global $USER, $DB;
        // Need grade permission.
        require_capability('mod/assign:grade', $this->context);

        // Give each submission plugin a chance to process the locking.
        $plugins = $this->get_submission_plugins();
        $submission = $this->get_user_submission($userid, false);

        $flags = $this->get_user_flags($userid, true);
        $flags->locked = 1;
        $this->update_user_flags($flags);

        foreach ($plugins as $plugin) {
            if ($plugin->is_enabled() && $plugin->is_visible()) {
                $plugin->lock($submission, $flags);
            }
        }

        $user = $DB->get_record('user', array('id' => $userid), '*', MUST_EXIST);
        \mod_assign\event\submission_locked::create_from_user($this, $user)->trigger();
        return true;
    }
public function lock_submission($userid) {
        global $USER, $DB;
        // Need grade permission.
        require_capability('mod/assign:grade', $this->context);

        // Give each submission plugin a chance to process the locking.
        $plugins = $this->get_submission_plugins();
        $submission = $this->get_user_submission($userid, false);

        $flags = $this->get_user_flags($userid, true);
        $flags->locked = 1;
        $this->update_user_flags($flags);

        foreach ($plugins as $plugin) {
            if ($plugin->is_enabled() && $plugin->is_visible()) {
                $plugin->lock($submission, $flags);
            }
        }

        $user = $DB->get_record('user', array('id' => $userid), '*', MUST_EXIST);
        \mod_assign\event\submission_locked::create_from_user($this, $user)->trigger();
        return true;
    }
public function lock_submission ( $ userid ) { global $ USER , $ DB ; // Need grade permission. require_capability ( 'mod/assign:grade' , $ this -> context ) ; // Give each submission plugin a chance to process the locking. $ plugins = $ this -> get_submission_plugins ( ) ; $ submission = $ this -> get_user_submission ( $ userid , false ) ; $ flags = $ this -> get_user_flags ( $ userid , true ) ; $ flags -> locked = 1 ; $ this -> update_user_flags ( $ flags ) ; foreach ( $ plugins as $ plugin ) { if ( $ plugin -> is_enabled ( ) && $ plugin -> is_visible ( ) ) { $ plugin -> lock ( $ submission , $ flags ) ; } } $ user = $ DB -> get_record ( 'user' , array ( 'id' => $ userid ) , '*' , MUST_EXIST ) ; \ mod_assign \ event \ submission_locked :: create_from_user ( $ this , $ user ) -> trigger ( ) ; return true ; }
Prevent student updates to this submission

@param int $userid
@return bool
Prevent student updates to this submission