Ajax call to 'api/queries/{name}' fails

[sht1rlitz]

Hello everyone,

I'm currently trying to receive query results using an AJAX call:

var products = $.ajax({
            type: "POST",
            url: "api/queries/ProductList",
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            data: JSON.stringify({ parameters: { from: 0, size: 8 }}),
        });

but it fails with "System.InvalidCastException: Null object cannot be converted to a value type."

This happens because Task<IActionResult> Query( string name, string parameters) always get parameters equals to null and instantiate an empty Dictionary.

LuceneQueryService tries to get the value at the var size = sizeProperty?.Value<int>() ?? 50; line and fails.

All the required permissions for Queries are granted.
Could someone point me on what I'm doing wrong, please?

[Skrypt]

JSON.stringify({ from: 0, size: 8 })

[sht1rlitz]

Hi Skrypt,
I've already tried this case too, but result unfortunately is the same.

[sht1rlitz]

Hasn't anyone faced this issue? I guess requesting query result via ajax is a widespread scenario.
Perhaps, it is not a bug, but rather a documentation gap.

[sht1rlitz]

Hello everyone,

I've figured out, that current implementation only allows querying results with GET, like

var products = $.getJSON( "api/queries/ProductList?parameters={from:0,size:8}");

I'm really confused at this moment as I've never seen passing objects into GET query.
Moreover, current documentation assures me that both methods are supported

Verbs: POST and GET

So my assumptions were:

1. If my Query isn't parameterized I'm supposed to use GET-request
2. If I have a complex object as a Query parameter, I need to use POST instead

[sebastienros]

I've never seen passing objects into GET query

For instance GraphQL supports GETs too, like this.

It would be ok to support POST though and read the parameters from the body (like GraphQL does it too)