I am currently trying to port an existing REST API to http4k. Is it possible to customize the 400 er...

# http4k

[Mikael Ståldal]

I am currently trying to port an existing REST API to http4k. Is it possible to customize the 400 error response when using contract? It seems like CatchLensFailure filter is not used.
Now I get:

{
  "message": "Missing/invalid parameters",
  "params": [
    {
      "name": "body",
      "type": "body",
      "datatype": "object",
      "required": true,
      "reason": "Invalid"
    }
  ]
}

I would need:

{
  "error": "..."
}

Since existing clients assume that.

[dave]

you can do this, but you need to drop down to using the main OpenApi3 constructor and overri

private val errorResponseRenderer: ErrorResponseRenderer = JsonErrorResponseRenderer(json),