The collectionNames
method of the native driver’s Db
object accepts an optional collection name filter as a first parameter to let you check the existence of a collection:
db.collectionNames(collName, function(err, names) {
console.log('Exists: ', names.length > 0);
});
In the 2.x version of the MongoDB native driver, collectionNames
has been replaced by listCollections
which accepts a filter and returns a cursor so you would do this as:
db.listCollections({name: collName})
.next(function(err, collinfo) {
if (collinfo) {
// The collection exists
}
});