Search
showing results for - "node js 3a e2 80 9creturnnewdocument 3a true e2 80 9d not working"
Filippo
13 May 2020
1// /node-mongodb-native//4.0 driver 
2//returnOriginal is Deprecated Use options.returnDocument instead.
3returnDocument	'before' | 'after'
4When set to 'after',returns the updated document rather than the original
5When set to 'before',returns the original document rather than the updated.
6The default is 'before'.
7
8const options = { returnDocument: 'after' };
9//same for findOneAndReplace
10myDataBase.findOneAndUpdate(query, update, options, (err, doc) => {
11   if (err) {
12          console.log("Something wrong when updating data!");
13        }
14        else if (!doc.lastErrorObject.updatedExisting && doc.value == null)
15          return res.json('no book exists')
16  
17 // The updated document is held within the value property of the response
18        console.log('doc.value');
19        console.log(doc.value);
20})
21
22//https://stackoverflow.com/a/67909382/918069/
23
source
similar questions
javascript if null use other valuejavascript if return true falsereturn nothing javascriptjs match true falsejs null vs undefinejavascript function return booleanreturn not working inside foreach javascriptjs not equal to null e2 80 9cnew set e2 80 9d is returning an empty set in nodejsjavascript null true or falsejavascript not nulljs regex return nulljs map don 27t returnjavascript error nullpromises and not callbacksif else not working in javascriptjavascript return opposite booleanvar fn 3d 28 29 3d 3e 7b return new promise 28r 3d 3e r 285 29 29 7djavascript return falsechange true to false js
queries leading to this page
returnnewdocumentnode js 3a e2 80 9creturnnewdocument 3a true e2 80 9d not working