From 9fe2bfe328145ac630d18929c0197c98402381f1 Mon Sep 17 00:00:00 2001
From: Silvio Rhatto <rhatto@riseup.net>
Date: Sun, 6 Nov 2011 14:21:34 -0200
Subject: Refactoring muamba_check_availability() and adding new views handlers

---
 muamba.db.inc | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

(limited to 'muamba.db.inc')

diff --git a/muamba.db.inc b/muamba.db.inc
index 0500dd9..21e2d8c 100644
--- a/muamba.db.inc
+++ b/muamba.db.inc
@@ -113,9 +113,13 @@ function muamba_get_transaction($mid) {
  *   Item nid or node object.
  *
  * @return
- *   Transaction nid there's an ongoing transaction.
+ *   Data of the ongoing transaction.
+ *
+ * @todo
+ *   There might be more than one active transaction for
+ *   a given item if they all are in the "requested" state.
  */
-function muamba_current_transaction($data) {
+function muamba_current_transaction($data, $owner = NULL) {
   if (is_object($data)) {
     $nid = (int) $data->nid;
   }
@@ -149,7 +153,7 @@ function muamba_current_transaction($data) {
  *   Item nid or node object.
  *
  * @return
- *   TRUE if user already requested an item, FALSE otherwise.
+ *   TRUE if item is borrowed, FALSE otherwise.
  */
 function muamba_check_availability($data) {
   if (is_object($data)) {
@@ -159,7 +163,15 @@ function muamba_check_availability($data) {
     $nid = (int) $data;
   }
 
-  $current = muamba_current_transaction($nid);
+  $query = db_select('muamba', 'm');
+  $query->fields('m', array('mid', 'nid', 'uid', 'owner', 'status', 'thread_id'));
+
+  $query
+    ->condition('m.nid', $nid, '=')
+    ->condition('m.active', '1', '=')
+    ->condition('m.status', MUAMBA_REQUESTED, '!=');
+
+  $current = $query->execute()->fetchAll();  
 
   if (empty($current)) {
     return TRUE;
-- 
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