How do i use SimpleQueryString function of elasticsearch?

Question

I am trying to write a django app and use elasticsearch in it with elasticsearch-dsl library of python. I don't want to create all switch-case statements and then pass search queries and filters accordingly.

I want a function that does the parsing stuff by itself. For e.g. If i pass "some text url:github.com tags:es,es-dsl,django", the function should output corresponding query.

I searched for it in elasticsearch-dsl documentation and found a function that does the parsing. https://github.com/elastic/elasticsearch-dsl-py/search?utf8=%E2%9C%93&q=simplequerystring&type= However, I dont know how to use it. I tried s = Search(using=client).query.SimpleQueryString("1st|ldnkjsdb"), but it is showing me parsing error.

Can anyone help me out?

Answer 1

You can just plug the SimpleQueryString in the Search object, instead of a dictionary send the elements as parameters of the object.

from elasticsearch import Elasticsearch
from elasticsearch_dsl import Search
from elasticsearch_dsl.query import SimpleQueryString

client = Elasticsearch()
_search = Search(using=client, index='INDEX_NAME')

_search = _search.filter( SimpleQueryString(
     query = "this + (that | thus) -those", 
     fields= ["field_to_search"],
     default_operator= "and"
))

A lot of elasticsearch_dsl simply change the dictionary representation to classes of functions that makes the code look pythonic, and avoid the use of hard-to-read elasticsearch JSONs.