renaming a collection with mongoDB

Question

I can not rename a collection in mongoDB. I can see that it exists and can write and read data from it. I have attempted the following using the node mongo native driver.

db.collection("mycollection").renameCollection("mynewcollection");

error: TypeError: Object #<Collection> has no method 'renameCollection'

and

db['mycollection'].renameCollection("mynewcollection");

Cannot call method 'renameCollection' of undefined

performing the following in the same place returns all docs as expected

db.collection("mycollection").find({}).toArray(function(err, docs){
    console.log(docs);
});

Have you tried `db.mycollection.renameCollection("mynewcollection");`?[Manual](http://docs.mongodb.org/manual/reference/method/db.collection.renameCollection/) — chridam, Feb 02 '15 at 15:21
yeah, it is the same as the first solution but I have still tried both syntax's — wazzaday, Feb 02 '15 at 15:26
I think you need the `rename` [method](http://mongodb.github.io/node-mongodb-native/api-generated/collection.html#rename) — chridam, Feb 02 '15 at 15:32

score 21 · Accepted Answer · answered Feb 02 '15 at 15:31

21

The method to rename a collection using the node.js driver is rename, not renameCollection:

db.collection("mycollection").rename("mynewcollection", function(err, newColl) {...});

answered Feb 02 '15 at 15:31

JohnnyHK

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@wazzaday For what it's worth, they named it that way because the dot chaining syntax already puts you in the context of a collection. It's easier in plain English to read "collection.rename", but more redundant to read "collection.renameCollection". They tried to make the API more intuitive that way. – CatDadCode Feb 02 '15 at 16:34

score 0 · Answer 2 · answered Feb 02 '15 at 15:31

add this code to your collection.js (it should be added to line 153, or endof the collection.js code) , it should resolve the problem.

req.collection.rename(name, function(err, collection) {
     if (err) {
-      req.session.error('Something went wrong: ' + err);
+      req.session.error = 'Something went wrong: ' + err;
       console.error(err);
       return res.redirect('back');
     }

     req.updateCollections(req.db, req.dbName, function(err) {
       if (err) {
-        req.session.error('Something went wrong: ' + err);
+        req.session.error = 'Something went wrong: ' + err;
         return res.redirect('back');
       }

-      req.session.success('Collection renamed!');
+      req.session.success = 'Collection renamed!';
       res.redirect(config.site.baseUrl+'db/' + req.dbName + '/' + name);
     });
   });

renaming a collection with mongoDB

2 Answers2

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