Merge pull request #1100 from rrdial/2.1-stable

2.1-stable: bug fix: compile binds before caching the query…
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index 4dfb584..6161f14 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -265,6 +265,12 @@
 			$sql = preg_replace("/(\W)".$this->swap_pre."(\S+?)/", "\\1".$this->dbprefix."\\2", $sql);
 		}
 
+		// Compile binds if needed
+		if ($binds !== FALSE)
+		{
+			$sql = $this->compile_binds($sql, $binds);
+		}
+
 		// Is query caching enabled?  If the query is a "read type"
 		// we will load the caching class and return the previously
 		// cached query if it exists
@@ -280,12 +286,6 @@
 			}
 		}
 
-		// Compile binds if needed
-		if ($binds !== FALSE)
-		{
-			$sql = $this->compile_binds($sql, $binds);
-		}
-
 		// Save the  query for debugging
 		if ($this->save_queries == TRUE)
 		{
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 76a0bcb..b87e61b 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -79,6 +79,7 @@
 	<li>Fixed a bug - form_open() compared $action against site_url() instead of base_url()</li>
 	<li>Fixed a bug - CI_Upload::_file_mime_type() could've failed if mime_content_type() is used for the detection and returns FALSE.</li>
 	<li>Fixed a bug (#538) - Windows paths were ignored when using the <a href="libraries/image_lib.html">Image Manipulation Class</a> to create a new file.</li>
+	<li>Fixed a bug - When database caching was enabled, $this->db->query() checked the cache before binding variables which resulted in cached queries never being found.</li>
 </ul>