Illegal Argument Exception when using Suggestors in Elasticsearch in PHP - php

Question

I have tried implementing completion suggestor query in php as given here. My code is :
$params = [
"index" => $myIndex,
"body" => [
"try" => [
"text" => "ram",
"completion" => [ "value" => "suggest"]
]
]
];
$response = $client->suggest($params);
I have done indexing like this:
$params = [
"index" => $myIndex,
"body" => [
"settings"=> [
"analysis"=> [
"analyzer"=> [
"start_with_analyzer"=> [
"tokenizer"=> "my_edge_ngram",
"filter"=> [
"lowercase"
]
]
],
"tokenizer"=> [
"my_edge_ngram"=> [
"type"=> "edge_ngram",
"min_gram"=> 3,
"max_gram"=> 15
]
]
]
],
"mappings"=> [
"doc"=> [
"properties"=> [
"label"=> [
"type"=> "text",
"fields"=> [
"keyword"=> [
"type"=> "keyword"
],
"ngramed"=> [
"type"=> "text",
"analyzer"=> "start_with_analyzer"
]
]
]
]
]
]
]
];
$response = $client->indices()->create($params); // create an index
and I am getting the following error:
{
"error": {
"root_cause": [
{
"type": "illegal_argument_exception",
"reason": "[completion] unknown field [value], parser not found"
}
],
"type": "illegal_argument_exception",
"reason": "[completion] unknown field [value], parser not found"
},
"status": 400
}
I have tried changing value to value.keyword but it is showing same error. I am using elastic search 5.3.2 . How to resolve this error?

Answer 1

In the query you are using field 'value' inside the completion while it is not a field like this, that is the exact error is stating.
You can try the below solution:
$params = [
"index" => $myIndex,
"body" => [
"try" => [
"text" => "ram",
"completion" => [ "label" => "suggest"]
]
]
];
$response = $client->suggest($params);
Hope this will work.