MDL-71215 core_user: User fields - remaining deprecated functions

This change removes references in code and comments to a few
deprecated functions that were accidentally missed in the larger
change.

The code changes only affect service_users.php. I made it support
custom user profile fields in this query, because it was easy
enough, rather than adding another TODO to fix later.

enrol/locallib.php

@@ -1226,7 +1226,7 @@ class course_enrolment_manager {
      * Please note that this function does not check capability for moodle/coures:viewhiddenuserfields
      *
      * @param object $user The user record
-     * @param array $extrafields The list of fields as returned from get_extra_user_fields used to determine which
+     * @param array $extrafields The list of fields as returned from \core_user\fields::get_identity_fields used to determine which
      * additional fields may be displayed
      * @param int $now The time used for lastaccess calculation
      * @return array The fields to be displayed including userid, courseid, picture, firstname, lastcourseaccess, lastaccess and any

lib/datalib.php

@@ -305,7 +305,7 @@ function users_search_sql($search, $u = 'u', $searchanywhere = true, array $extr
  *  - firstname
  *  - lastname
  *  - $DB->sql_fullname
- *  - those returned by get_extra_user_fields
+ *  - those returned by \core_user\fields::get_identity_fields
  *
  * If named parameters are used (which is the default, and highly recommended),
  * then the parameter names are like :usersortexactN, where N is an int.
@@ -334,7 +334,7 @@ function users_search_sql($search, $u = 'u', $searchanywhere = true, array $extr
  * @param string $usertablealias (optional) any table prefix for the {users} table. E.g. 'u'.
  * @param string $search (optional) a current search string. If given,
  *      any exact matches to this string will be sorted first.
- * @param context $context the context we are in. Use by get_extra_user_fields.
+ * @param context $context the context we are in. Used by \core_user\fields::get_identity_fields.
  *      Defaults to $PAGE->context.
  * @return array with two elements:
  *      string SQL fragment to use in the ORDER BY clause. For example, "firstname, lastname".

mod/quiz/report/overview/report.php

@@ -482,7 +482,7 @@ class quiz_overview_report extends quiz_attempts_report {
      *
      * Given an array of attempts, it regrades them all, or does a dry run.
      * Each object in the attempts array must be a row from the quiz_attempts
-     * table, with the get_all_user_name_fields from the user table joined in.
+     * table, with the \core_user\fields::for_name() fields from the user table joined in.
      * In addition, if $attempt->regradeonlyslots is set, then only those slots
      * are regraded, otherwise all slots are regraded.
      *

webservice/lib.php

@@ -288,21 +288,19 @@ class webservice {
 
         $params = array($CFG->siteguest, $serviceid);
 
-        $namefields = get_all_user_name_fields(true, 'u');
+        $userfields = \core_user\fields::for_identity(context_system::instance())->with_name()->excluding('id');
+        $fieldsql = $userfields->get_sql('u');
 
-        foreach (get_extra_user_fields(context_system::instance()) as $extrafield) {
-            $namefields .= ',u.' . $extrafield;
-        }
-
-        $sql = " SELECT u.id as id, esu.id as serviceuserid, {$namefields},
+        $sql = " SELECT u.id as id, esu.id as serviceuserid {$fieldsql->selects},
                         esu.iprestriction as iprestriction, esu.validuntil as validuntil,
                         esu.timecreated as timecreated
-                   FROM {user} u, {external_services_users} esu
+                   FROM {user} u
+                   JOIN {external_services_users} esu ON esu.userid = u.id
+                        {$fieldsql->joins}
                   WHERE u.id <> ? AND u.deleted = 0 AND u.confirmed = 1
-                        AND esu.userid = u.id
                         AND esu.externalserviceid = ?";
 
-        $users = $DB->get_records_sql($sql, $params);
+        $users = $DB->get_records_sql($sql, array_merge($fieldsql->params, $params));
 
         return $users;
     }

webservice/renderer.php

@@ -106,7 +106,7 @@ class core_webservice_renderer extends plugin_renderer_base {
         global $CFG;
 
         $listitems = [];
-        $extrafields = get_extra_user_fields(context_system::instance());
+        $extrafields = \core_user\fields::get_identity_fields(context_system::instance());
 
         foreach ($users as $user) {
             $settingsurl = new moodle_url('/admin/webservice/service_user_settings.php',