From 25f44c72bdf3b524cda704ab02d380a5fded69b5 Mon Sep 17 00:00:00 2001
From: Tim Hunt <T.J.Hunt@open.ac.uk>
Date: Sat, 29 Jan 2011 15:42:09 +0000
Subject: [PATCH] custom profile fields MDL-26177 fields with unique were
 broken because you cannot use get_field with TEXT columns.

---
 user/profile/lib.php | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/user/profile/lib.php b/user/profile/lib.php
index d83271a49dc..05e465533d2 100644
--- a/user/profile/lib.php
+++ b/user/profile/lib.php
@@ -131,10 +131,14 @@ class profile_field_base {
         $errors = array();
         /// Check for uniqueness of data if required
         if ($this->is_unique()) {
-            if ($userid = $DB->get_field('user_info_data', 'userid', array('fieldid'=>$this->field->id, 'data'=>$usernew->{$this->inputname}))) {
-                if ($userid != $usernew->id) {
-                    $errors["{$this->inputname}"] = get_string('valuealreadyused');
-                }
+            $userid = $DB->get_field_sql('
+                    SELECT userid
+                      FROM {user_info_data}
+                     WHERE fieldid = ?
+                       AND ' . $DB->sql_compare_text('data') . ' = ?',
+                    array($this->field->id, $usernew->{$this->inputname}));
+            if ($userid && $userid != $usernew->id) {
+                $errors[$this->inputname] = get_string('valuealreadyused');
             }
         }
         return $errors;