body is strange by core.request.get_post_args(ctx)

[kevalin]

I request a api by postman.

Body data:

{ "name": "Tom", "age": 12 }

local body = core.request.get_post_args(ctx) 
type(body) == "table"  -- true
for k, v in pairs(body) do
  core.log.warn("k: ", k)  -- it's my body ( a string json("{\r\n    \"name\": \"Tom\",\r\n    \"age\": 12,\r\n}"), so strange )
  core.log.warn("v: ", v)  -- true (why is it 'true'?)
end

I expect k == "name" and v == "Tom", and so on.
But, I must use cjson.decode(k).name to get real data. It's not so cool.
What Happened?

[tzssangglass]

you can learn form:

apisix/apisix/plugins/wolf-rbac.lua

Lines 332 to 348 in 6ae923a

	local function get_args()
	local ctx = ngx.ctx.api_ctx
	local args, err
	req_read_body()
	if string.find(ctx.var.http_content_type or "","application/json",
	1, true) then
	local req_body = req_get_body_data()
	args, err = json.decode(req_body)
	if not args then
	core.log.error("json.decode(", req_body, ") failed! ", err)
	end
	else
	args = core.request.get_post_args(ctx)
	end
	return args
	end

[kevalin]

I see your point:

1. http_content_type == "application/json", I should decode body by myself.
2. others, just do it by core.request.get_post_args(ctx).

😄, Thanks.