How to handle json payload in GET request Play 2.0 + Scala - scala

Question

I want to make a handler/controller for a GET request such as in ElasticSearch :
$ curl -XGET 'http://localhost:9200/twitter/tweet/_search?routing=kimchy' -d '{
"query": {
"filtered" : {
"query" : {
"query_string" : {
"query" : "some query string here"
}
},
"filter" : {
"term" : { "user" : "kimchy" }
}
}
}}
I read the documentation from http://www.playframework.org/documentation/2.0.4/ScalaJsonRequests but the example is based on POST request. I've tried on my own it appears that I can access to the body request with POST request. But, when I try with the GET request, my request.body is AnyContentAsEmpty.
Is there a way to handle the json from this request in Play 2.0 ?
I saw that there is no body semantic for GET : Payloads of HTTP Request Methods .
So maybe it's normal that there is no mechanism to deal with it through Play 2.0.

Answer 1

I believe you are confused on what can you expect on each type of request. To sum it up:
GET requests contain the payload in the URL, no request body is
added
POST requests add the payload to the request body
From the example you post it seems that you want to return a Json answer as a result from a GET request, which would make more sense.
That can be easily achieved by crafting the Json string and using the Ok(result).as("application/json") to set the MIME type of the response.

Answer 2

this is a sample question
Play's default body parser follows the HTTP spec, and ignores the message body for GET, DELETE, HEAD and OPTIONS methods. If you want to force it to parse a body, you can do that by explicitly passing a body parser, eg:
def delete = Action(parse.json) { implicit request =>
val json = request.body
val someProp = (json \ "someprop").as[String]
Ok(s"Prop is: $someProp")
}