picto upload now is an update

sails/src/api/controllers/PictoController.js

@@ -563,23 +563,37 @@ module.exports = {
 
         if (err || (uploadedFiles.length === 0))
           return res.serverError("Error uploading " + err ? err : "");
-
-        Picto.create({
-          uri: pictoFileName,
-          source: 2, // 1 -> SymbolStix, 2 -> custom
-          owner: supervisor.id
-        })
-        .then(picto => {
-          return res.ok(picto);
-        })
-        .catch(err => {
-          fs.unlink(uploadedFiles[0].fd);
-          return res.serverError("Error uploading " + err);
-        });
-      });
-    })
-    .catch(function (err) {
-      return res.serverError("Error uploading picto: " + err);
-    });
+        if (req.body.id_pic!=null && req.body.id>=0) {
+            query =  {
+                id: req.body.id_pic
+            }
+            Picto.update(query, {
+              uri:pictoFileName
+            })
+            .then(updated => {              
+              return res.ok(updated);            
+            })
+            .catch(err => {
+              return res.serverError('Unable to upload picto: ' + err);
+            });
+        }
+        else
+            Picto.create({
+              uri: pictoFileName,
+              source: 2, // 1 -> SymbolStix, 2 -> custom
+              owner: supervisor.id
+           })
+           .then(picto => {
+             return res.ok(picto);
+           })
+           .catch(err => {
+             fs.unlink(uploadedFiles[0].fd);
+             return res.serverError("Error uploading " + err);
+           });
+         });
+       })
+       .catch(function (err) {
+         return res.serverError("Error uploading picto: " + err);
+       });
   }
 };