inserting into array using elastic search with javascript api

Question

I want to add something into array “tags”:[“red”] using JavaScript api in elastic search, currently, i am doing this as follows:

client.update(
"test":{
"index": "test",
"type": "type1",
"id": "1",
"body": {
"script": "ctx._source.tags += tag", 
"params": { "tag": "blue" }
}
})

this changes the field "tags" : ["red"] to "tags" : blue instead of ["red","blue"],

I am getting the expected output via Ubuntu Terminal using curl -XPUT or curl -XPOST methods

My node module elastic search version is 2.4.2 elastic search server is 1.3.2

Please Help...

BatScream · Accepted Answer · 2014-10-06 14:42:22Z

2

ElasticSearch script engine does not support javascript, Read:why not javascript.

To add an item to a array, use the add() function and not +=

curl -XPOST 'localhost:9200/test/type1/1/_update' -d '{
"script":"ctx._source.tags.add(tag)",
"params":{"tag":"blue"}
}'

edited Oct 6, 2014 at 14:42

answered Oct 6, 2014 at 13:09

BatScream

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3 Comments

Rajit Garg Over a year ago

This is not working in two cases,1) if tags is integer type or 2) tags does not already exist, i also tried "upsert": { "tags": [] }, but this is not working....please help

BatScream Over a year ago

@RajitGarg-if tags is integer, then you need to use ctx._source.tags += tag. If it doesn't exist, it would be ignored. I suggest you to query based on your schema. It would be more helpful for you, if you set up a new question, depicting the schema, if this is not resolved.

Rajit Garg Over a year ago

I am doing this for update integer type field client.update( {"index": "test", "type": "type1", "id": "2201", "body": {"script" : "ctx._source.counter+=count", "params": { "count":50 } } }) Initially my counter = 10, then it should be updated to 60(50+10), but it replaces this from the new one and result is 50, please help

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