In order to provide search functionalities for your user, one of the most common requirements is to provide text suggestions for your query.
ElasticSearch provides a helper to archive this functionality via a special type mapping called completion.
The definition of a completion field is similar to that of the previous core type fields. For example, to provide suggestions for a name with an alias, you can write a similar mapping:
{
"name": {"type": "string", "copy_to":["suggest"]},
"alias": {"type": "string", "copy_to":["suggest"]},
"suggest": {
"type": "complection",
"payloads": true,
"index_analyzer": "simple",
"search_analyzer": "simple"
}
}In this example, we have defined two string fields, name and alias, and a suggest completer for them.