How can I sort price string in ElasticSearch? - node.js

Question

In my example i tried to sort but i have no success. My problem is because my price is string and the price is like that => 1.300,00. When I sort string price i have that for exemplo. 0,00 | 1,00 | 1.000,00 | 2,00.
I wanna format format in double for sort or like similar that.
How can i do that ?

Answer 1

It is not a good idea to keep Price as a keyword in Elastic search best approach would be to map price as scaled float in elastic search like this:
New Mapping:
PUT [index_name]/_mapping
{
"properties": {
"price2": {
"type": "scaled_float",
"scaling_factor": 100
}
}
}
To solve your problem you can add new mapping and convert your value from string to numeric value:
Update by query:
POST [index_name]/_update_by_query
{
"query": {
"match_all": {}
},
"script": {
"source": "ctx._source['price2'] = ctx._source['price'].replace(',','')"
}
}
This query will convert your keyword value to string and map it in another field named price2, then you will need to have an ingest pipeline to do the process to new entries:
Ingest pipeline:
POST _ingest/pipeline/_simulate
{
"pipeline": {
"processors": [
{
"script": {
"description": "Extract 'tags' from 'env' field",
"lang": "painless",
"source": "ctx['price2'] = ctx['price'].replace(',','')"
}
}
]
},
"docs": [
{
"_source": {
"price": "5,000.00"
}
}
]
}
You need to remove _simulate and add this ingest pipeline to your index.