set_synapse fix

diff --git a/wwwroot/backend/mysql/backend.inc b/wwwroot/backend/mysql/backend.inc
index a92deeae52ef3106a845110a95ef22fe29c07961..6bc454be76d4dc8ed31c903b54950ce7071b2596 100644 (file)
--- a/wwwroot/backend/mysql/backend.inc
+++ b/wwwroot/backend/mysql/backend.inc
@@ -341,19 +341,24 @@ function getKNeurons($user_id,$interval) {
        return $k_array;
 }
 
-// Set synapse weight,
+// setSynapse
 
-// Secure
-// Returns true on sucess, otherwise false
-
-// XXX TODO
+// Set synapse weight. 
+// If synapse does not exists, create a new one.
+// Secure.
+// Returns true on sucess, otherwise false.
 
 function setSynapse($params){
        global $db,$node,$error,$error_messages;
 
-       if ((!is_numeric($params['src'])) or (!is_numeric($params['dst'])) or (!is_numeric($params['weight']))) {
+       // security check
+       if ((!is_numeric($params['src'])) 
+               or (!is_numeric($params['dst']))
+               or (!is_numeric($params['weight']))) {
+
                return false;
        }
+
        $src=$params['src'];
        $dst=$params['dst'];
        $weight=$params['weight'];
@@ -361,15 +366,15 @@ function setSynapse($params){
        // if already exists
        $q="select src from neurons where dst ='$dst' and src = '$src'";
        $set=$db->query($q);
-
        $set->next();
        $isrc=$set->getString('src');
-       if ( $set ) {
+
+       if ( $isrc ) {
                $q="update neurons set synapse_weight='$synapse_weight' 
                        where dst = '$dst' and src = '$src'";
        } else { 
                // FIXME no vector set
-               $q="insert into neurons values('$synapse_weight','$dst','$src',0,'synapse',
+               $q="insert into neurons values('$weight','$dst','$src',0,'synapse',
                                                CURRENT_TIMESTAMP(),now(),NULL,$src)";
        }
        $set=$db->query($q);