Handling Plug.Parsers.ParseError in a Phoenix API

Phoenix Forum Questions / Help
1

I am implementing a JSON API using Phoenix, and one of the requirements is to return a custom JSON error message when a client sends malformed JSON. After looking at the docs for Phoenix and Plug, I still don’t know how to do this.

So when sending something like ‘{“hello”: "world}’ to the API, it should return something like ‘{“errcode”: “M_NOT_JSON”}’ with status code 400. Right now, it only logs the Plug.Parsers.ParseError and render HTML

2

Did you add anything in your view file?

I’m not getting much idea what is there in your view file.
I have tried to mention here how can you build a simple api. Maybe this could help?

3

I’m not using any views. I am responding with json with

conn
|> put_status(200)
|> json(payload)

I would like to do the same when Plug isn’t able to decode input JSON.