customers_index.json

PUT http://localhost:9200/crm_app
{
  "settings": {
    "index": {
      "analysis": {
        "filter": {},
        "analyzer": {
          "analyzer_keyword": {
            "tokenizer": "keyword",
            "filter": "lowercase"
          },
          "edge_ngram_analyzer": {
            "filter": [
              "lowercase"
            ],
            "tokenizer": "edge_ngram_tokenizer"
          }
        },
        "tokenizer": {
          "edge_ngram_tokenizer": {
            "type": "edge_ngram",
            "min_gram": 2,
            "max_gram": 5,
            "token_chars": [
              "letter"
            ]
          }
        }
      }
    }
  },
  "mappings": {
    "customers": {
      "properties": {
        "fullName": {
          "type": "text",
          "analyzer": "edge_ngram_analyzer"
        },
        "shortCode": {
          "type": "text"
        },
        "createdDate": {
           "type": "date"
        }
      }
    } 
  }
}