Retrieve contents of _source only- Elasticsearch ( Node JS)

Question

According to Retrieving a document documentation

 GET /website/blog/123/_source

would directly return the document stored inside the _source field. I'm currently using Node JS's express framework. How should I implement this in my code?

esClient.search({
        index: "myIndex",
        type: "myType",
        body: {

            "query": {
                "match_all": {}
            },
            "size": 3,
            "from": 1

        }
    }).then(function (resp) {
        var result = resp.hits.hits;
        res.status(200).send({data: {recommendations: result, showItemFrom: showItemFrom}})
    }, function (err) {
        console.trace(err.message)
        res.status(500).send({data: err.message})
    })

I'm getting the response this way...

[
  "_source":{
             {
                 "id": 1,
                 "title": "Test"
                }
            } 
]

However, I want it this way...

[
   {
      id:1,
      title:"Test"
   }
]

Antonio Val · Accepted Answer · 2018-03-18 10:06:46Z

4

I don't think the Elasticsearch API has a method to do that for searches, the one that Val mentioned works, but it is only usable to GET documents directly through its id.

But you can map the result using the Javascript Array#map() method:

var result = resp.hits.hits.map(hit => hit._source);

answered Mar 18, 2018 at 10:06

Antonio Val

3,3701 gold badge16 silver badges27 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

NightOwl Over a year ago

Perfect single line solution.

Lax · Accepted Answer · 2018-03-18 06:39:05Z

0

After

index:"myIndex"

Add:

source:true

answered Mar 18, 2018 at 6:39

Lax

1,1671 gold badge8 silver badges15 bronze badges

1 Comment

LEE Over a year ago

That didn't have any effect.

Val · Accepted Answer · 2018-03-18 07:37:11Z

0

You need to call the getSource() function, like this:

esClient.getSource({
    index: "website",
    type: "blog",
    id: "123"
}).then(function (source) {
   // do something with source
}, function (err) {
   // error happened
})

answered Mar 18, 2018 at 7:37

Val

218k14 gold badges377 silver badges384 bronze badges

Collectives™ on Stack Overflow

Retrieve contents of _source only- Elasticsearch ( Node JS)

3 Answers 3

1 Comment

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related