I use has_parent for query data, but I want to sort this data follow some parent field which is a String .
I tried to find solutions, I found how to sort in ElasticSearch documents
"query": {
        "has_parent" : {
            "parent_type" : "blog",
            "score" : true,
            "query" : {
                "function_score" : {
                    "script_score": {
                        "script": "_score * doc['view_count'].value"
                    }
                }
            }
        }
    }
It use "score" * doc['view_count'] for searching which is an integer , but I want to do some calculations with String for searching it, but I don't know what should I do.
If you have another idea, please tell me.
thanks for helping me.