Merge pull request OptimalBits#148 from nemtsov/patch-4

acl/middleware: add default errorHandler
domharrington · Aug 23, 2015 · 9bc0a24 · 9bc0a24
2 parents ec4f24a + 9132f6a
commit 9bc0a24
Showing 1 changed file with 21 additions and 0 deletions.
diff --git a/lib/acl.js b/lib/acl.js
@@ -655,6 +655,27 @@ Acl.prototype.middleware = function(numPathComponents, userId, actions){
   };
 };
 
+/**
+  Error handler for the Express middleware
+
+  @param {String} [contentType] (html|json) defaults to plain text
+*/
+Acl.prototype.middleware.errorHandler = function(contentType){
+  var method = 'end';
+
+  if(contentType){
+    switch (contentType) {
+      case 'json': method = 'json'; break;
+      case 'html': method = 'send'; break;
+    }
+  }
+
+  return function(err, req, res, next){
+    if(err.name !== 'HttpError' || !err.errorCode) return next(err);
+    res.status(err.errorCode)[method](err.message);
+  };
+};
+
 
 //-----------------------------------------------------------------------------
 //