POST parameters support in RAML - api

Question

I'd like to ask if there is any support for POST parameters in RAML. And if there is - what is the syntax. I've browsed spec 0.8 and spec 1.0 roughly (actually I'm bound to 0.8, since many tools don't support 1.0 yet). I didn't find POST parameters support, but maybe I just missed something.
So what do I mean by POST parameters? These can be either of the two (sorry, I don't know their formal names, if there are any):
HTTP plain parameters, key=value, each parameter in one line, such as
name=John Doe
amount=5
which is not really handy (e.g. no nesting)
parameters as JSON object, just a JSON with all its syntax allowed (server-side needs to parse this json); such as:
{"name":"John Doe","amount":"5"}
Different server-side API implementations use either 1st or 2nd one. Anyway, how does RAML support these?

Answer 1

As it is shown in this reference https://github.com/raml-org/raml-spec/wiki/Breaking-Changes:
For raml 0.8:
body:
application/x-www-form-urlencoded:
formParameters:
name:
description: name on account
type: string
example: Naruto Uzumaki
gender:
enum: ["male", "female"]
Is the equivalent in raml 1.0 to:
body:
application/x-www-form-urlencoded:
properties:
name:
description: name on account
type: string
example: Naruto Uzumaki
gender:
enum: ["male", "female"]
So what it changes is the formParameters attribute to the properties one.

Answer 2

#Pedro has covered option 2, so here is option 1. Based on the discussion in the comments, it seems the encoding used is application/x-www-form-urlencoded.
You need to use formParameters.
Example:
post:
description: The POST operation adds an object to a specified bucket using HTML forms.
body:
application/x-www-form-urlencoded:
formParameters:
AWSAccessKeyId:
description: The AWS Access Key ID of the owner of the bucket who grants an Anonymous user access for a request that satisfies the set of constraints in the Policy.
type: string
acl:
description: Specifies an Amazon S3 access control list. If an invalid access control list is specified, an error is generated.
type: string
Reference: https://github.com/raml-org/raml-spec/blob/master/raml-0.8.md#web-forms

Answer 3

Post parameters can be expressed using JSON Schema
A simple RAML 0.8 example:
#%RAML 0.8
title: Api
baseUri: /
schemas:
- Invoice: |
{
"$schema": "http://json-schema.org/draft-03/schema",
"type": "object",
"properties": {
"Id": { "type": "integer"},
"Name": { "type": "string"},
"Total": { "type": "number"}
}
}
/invoices:
post:
body:
application/json:
schema: Invoice