From b8dfca3aa5a2e40e4b4ffe5053b2339607d2c605 Mon Sep 17 00:00:00 2001
From: Ben Roberts <ben@sihnon.net>
Date: Mon, 29 Aug 2011 19:19:29 +0100
Subject: [PATCH] Add support for renaming config settings

---
 source/lib/SihnonFramework/Config.class.php      | 16 ++++++++++++++++
 .../SihnonFramework/Config/IUpdateable.class.php |  9 +++++++++
 .../Config/Plugin/Database.class.php             |  7 +++++++
 3 files changed, 32 insertions(+)

diff --git a/source/lib/SihnonFramework/Config.class.php b/source/lib/SihnonFramework/Config.class.php
index 4e012c1..50a84e6 100644
--- a/source/lib/SihnonFramework/Config.class.php
+++ b/source/lib/SihnonFramework/Config.class.php
@@ -167,6 +167,22 @@ class SihnonFramework_Config {
         // Persist the change into the backend
         return $this->backend->remove($key);
     }
+    
+    public function rename($key, $new_key) {
+        if ( ! ($this->backend instanceof Sihnon_Config_IUpdateable)) {
+            throw new Sihnon_Exception_ReadOnlyConfigBackend();
+        }
+        if (!isset($this->settings[$key])) {
+            throw new Sihnon_Exception_UnknownSetting($key);
+        }
+
+        // Rename the setting for this run
+        $this->settings[$new_key] = $this->settings[$key];
+        unset($this->settings[$key]); 
+        
+        // Persist the change into the backend
+        return $this->backend->rename($key, $new_key);
+    }
 
 };
 
diff --git a/source/lib/SihnonFramework/Config/IUpdateable.class.php b/source/lib/SihnonFramework/Config/IUpdateable.class.php
index 76c1b60..df23dcd 100644
--- a/source/lib/SihnonFramework/Config/IUpdateable.class.php
+++ b/source/lib/SihnonFramework/Config/IUpdateable.class.php
@@ -29,6 +29,15 @@ interface SihnonFramework_Config_IUpdateable {
      */
     public function remove($key);
     
+    /**
+     * 
+     * Rename a setting
+     * @param string $key
+     * @param string $new_key
+     * @return bool
+     */
+    public function rename($key, $new_key);
+    
 }
 
 ?>
\ No newline at end of file
diff --git a/source/lib/SihnonFramework/Config/Plugin/Database.class.php b/source/lib/SihnonFramework/Config/Plugin/Database.class.php
index dc98509..81b0b5a 100644
--- a/source/lib/SihnonFramework/Config/Plugin/Database.class.php
+++ b/source/lib/SihnonFramework/Config/Plugin/Database.class.php
@@ -49,6 +49,13 @@ class SihnonFramework_Config_Plugin_Database extends Sihnon_PluginBase implement
         ));
     }
     
+    public function rename($key, $new_key) {
+        return $this->database->update("UPDATE `{$this->table}` SET `name`=:new_name WHERE `name`=:name LIMIT 1", array(
+            array('name' => 'new_name', 'value' => $new_key, 'type' => PDO::PARAM_STR),
+            array('name' => 'name',     'value' => $key,     'type' => PDO::PARAM_STR),
+        ));
+    }
+    
 }
 
 ?>
\ No newline at end of file