Unexpected behaviour when the request body is an array

[Artur Trapp]

Hello 👋🏻 

Apologies if this is intended behavior or if I am just using the library wrongly. 

I have created a `POST` endpoint whose body is an array, like this:

[

        {

            "prop1": "1",

            "prop2": "2"

        },

        {

            "prop1": "a",

            "prop2": "b"

        }

]

when I tried to access the @_request.params, it threw me the following error: TypeError: no implicit conversion of Array into Hash. The stack trace led me to the line 469 of the rack/request.rb file, so I am not really sure if this is an issue with `rack` or `roda` though.

The code where the bug happens is as follows:

def params

    self.GET.merge(self.POST)

end

I presumed this happens because self.POST is an Array, and merge receives a Hash as an argument, so the exception is thrown.

I did a workaround, like this:

begin

    params = @_request.params

rescue StandardError

    params = @_request.POST

end

But I am not sure this is the right thing to do. Any clues here?

[Jeremy Evans]

I assume you are using the json_parser plugin, or this wouldn't work at all, as the JSON request body wouldn't be parsed.  If so, you can use wrap: :always or wrap: :unless_hash option to the json_parser plugin.  That will allow you to access the JSON array from the request body using r.params['_json'].

Thanks,

Jeremy