From bb9f9274e8c2d661a1adffd87c87c3d81ec47b4d Mon Sep 17 00:00:00 2001
From: Florian Pritz <bluewind@xinu.at>
Date: Mon, 16 Sep 2013 16:49:58 +0200
Subject: Duser: Rework optional functions

Not implemented functions return null and code using these no longer
has to check if they are implemented, but it has to handle null
properly.

Signed-off-by: Florian Pritz <bluewind@xinu.at>
---
 application/libraries/Duser/Duser.php            | 13 ++++---------
 application/libraries/Duser/drivers/Duser_db.php |  2 --
 application/views/user/profile.php               |  2 +-
 3 files changed, 5 insertions(+), 12 deletions(-)

diff --git a/application/libraries/Duser/Duser.php b/application/libraries/Duser/Duser.php
index b615528f7..38ee967c9 100644
--- a/application/libraries/Duser/Duser.php
+++ b/application/libraries/Duser/Duser.php
@@ -9,14 +9,11 @@
 
 abstract class Duser_Driver extends CI_Driver {
 
-	// List of optional functions or function groups that are implemented
+	// List of optional functions that are implemented
 	//
-	// Possible values are names of functions already implemented in this
-	// abstract class or the function groups listed below.
-	//
-	// Possible function groups are:
-	//  - can_register_new_users
-	//  - can_reset_password
+	// Possible values are:
+	//  - can_register_new_users (only supported with the DB driver!)
+	//  - can_reset_password (only supported with the DB driver!)
 	public $optional_functions = array();
 
 	/*
@@ -101,8 +98,6 @@ class Duser extends CI_Driver_Library {
 
 	public function username_exists($username)
 	{
-		$this->require_implemented(__FUNCTION__);
-
 		if ($username === false) {
 			return false;
 		}
diff --git a/application/libraries/Duser/drivers/Duser_db.php b/application/libraries/Duser/drivers/Duser_db.php
index 5252ec48e..0f4298258 100644
--- a/application/libraries/Duser/drivers/Duser_db.php
+++ b/application/libraries/Duser/drivers/Duser_db.php
@@ -14,10 +14,8 @@ class Duser_db extends Duser_Driver {
 	 * will NOT work with other drivers.
 	 */
 	public $optional_functions = array(
-		'username_exists',
 		'can_reset_password',
 		'can_register_new_users',
-		'get_email',
 	);
 
 	public function login($username, $password)
diff --git a/application/views/user/profile.php b/application/views/user/profile.php
index bcd740612..1840f9fc1 100644
--- a/application/views/user/profile.php
+++ b/application/views/user/profile.php
@@ -7,7 +7,7 @@
 		</div>
 	</div>
 
-	<?php if(auth_driver_function_implemented("get_email")) { ?>
+	<?php if($profile_data["email"] !== null) { ?>
 	<div class="control-group">
 		<label class="control-label" for="inputEmail">Email</label>
 		<div class="controls">
-- 
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