Using the search template
Elasticsearch provides the capability of providing a template and some parameters to fill it. This functionality is very useful because it allows you to manage the query templates stored in the .scripts index and also allows you to change them without changing the application code.
Getting ready
You will need an up-and-running Elasticsearch installation, as described in the Downloading and installing Elasticsearch recipe of Chapter 1, Getting Started.
To execute these commands, any HTTP client can be used, such as Curl (https://curl.haxx.se/), Postman (https://www.getpostman.com/), or similar. I suggest using the Kibana console as it provides code completion and better character escaping for Elasticsearch.
To correctly execute the following commands, you will need an index populated with the ch04/populate_kibana.txt command, which is available in the online code.
How to do it...
The template query is composed...
