How to transform CURL request to Httpoison request in Elixir Phoenix

Question

I'm trying to transform CURL request with HTTPoison in Elixir Phoenix. When I run CURL request commend, It work fine.I got "415 Unsupported media type" error when I try with HTTPoison.

Phoenix/Elixir - cURL works, but HTTPoison fails

Here is my CURL request

curl -u "user:password" -i -H "Accept:application/json" -X POST -d
 "amount=100&method=0&type=bank&receiver=CCC&info1=hello" 
 http://00.000.000.00:8080/services/id/999999111999/calculate

Here is my Httpoison request

url = "myurl"
orderid = "myorderid"
headers = ["Accept", "application/json"]
request_body = '{"type" : "bank", 
         "method" : 0,
         "amount" : #{amount},
                 "receiver" : "CCC"
         "info1" : #{orderid}}'
dicoba = HTTPoison.post(url, headers, request_body, hackney: [basic_auth: {"#{user}", "#password"}]) |> IO.inspect

I doubt `HTTPoison` supports _lists_ in `request_body` parameter and yours is indeed a list instead of string. Single quotes in Elixir do not what you expect them to do. Use `~s` sigil instead. — Aleksei Matiushkin, May 06 '19 at 04:34

Aetherus · Answer 1 · 2020-02-28T14:42:14.790

2

The curl request is in the content type application/x-www-form-urlencoded, but your HTTPoison request is, well, malformed. You passed a charlist to the request body, where HTTPoison expects a binary, and you didn't specify the request's content type.

To create a application/x-www-form-urlencoded request body, you can use the function URI.encode_query/1.

url = "http://00.000.000.00:8080/services/id/999999111999/calculate"
payload = %{
  "amount" => 100,
  "method" => 0,
  "type" => "bank",
  "receiver" => "CCC",
  "info1" => "hello"
}
request_body = URI.encode_query(payload)
headers = [
  {"Accept", "application/json"}, 
  {"Content-Type", "application/x-www-form-urlencoded; charset=utf-8"}
]
dicoba = HTTPoison.post(url, request_body, headers, hackney: [basic_auth: {"#{user}", "#password"}])

edited Feb 28 '20 at 14:42

answered May 06 '19 at 05:42

Aetherus

8,720
1
22
36

Thanks for your answer. But I got this error message with 400 status. ```body: "{\"errorMessage\":\"COUNT_VIOLATED_ERROR\",\"errorCode\":\"99999999\"}" ``` – Thatoe Aung May 06 '19 at 08:20
What does **COUNT_VIOLATED_ERROR** mean? – Aetherus May 06 '19 at 08:30
@Aetherus I think the `request_body comes` before the `headers` `HTTPoison.post(url, request_body, headers, hackney: [basic_auth: {"#{user}", "#password"}]) ` – ManuEl Magak Feb 28 '20 at 13:43
@Aetherus awesome,Other thank that, I like your solution, it helped – ManuEl Magak Mar 01 '20 at 11:45

How to transform CURL request to Httpoison request in Elixir Phoenix

1 Answers1