avoid overwriting req.model if defined already

derbyjs · Mar 22, 2016 · 74059d1 · 74059d1
1 parent fe0d9d8
commit 74059d1
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/lib/Backend.js b/lib/Backend.js
@@ -29,13 +29,18 @@ RacerBackend.prototype.createModel = function(options, req) {
 RacerBackend.prototype.modelMiddleware = function() {
   var backend = this;
   function modelMiddleware(req, res, next) {
+    // Do not add a model to the request if one has been added already
+    if (req.model) return next();
+
+    // Create a new model for this request
     req.model = backend.createModel({fetchOnly: true}, req);
     // DEPRECATED:
     req.getModel = function() {
       console.warn('Warning: req.getModel() is deprecated. Please use req.model instead.');
       return req.model;
     };
 
+    // Close the model when this request ends
     function closeModel() {
       res.removeListener('finish', closeModel);
       res.removeListener('close', closeModel);