Parses form encoded data

Examples

pub type Note {
  Note(id: Int, title: String, content: String)
}
pub fn decode(body: String) {
 let decoder =
   dynamic.decode3(
     Note,
     dynamic.field("id", of: dynamic.int),
     dynamic.field("title", of: dynamic.string),
     dynamic.field("content", of: dynamic.string),
   )
 form.decode(body, decoder)
}

decode(“id=1&title=Hello&content=World”) Ok(Note(1, “Hello”, “World”))

You can couple this with a request middleware to parse the body of a request

pub fn create_decoder(
 handler: Service(Result(Note, form.FormDecodeError), assigns, session, res),
) -> Service(BitString, assigns, session, res) {
 fn(req: Request(BitString, assigns, session)) -> Response(res) {
   request.map(
     req,
     fn(body) {
       body
       |> bit_string.to_string()
       |> result.unwrap("")
       |> decode()
     },
   )
   |> handler()
 }
}
...
router.get(
 "/",
 {
   use req: Request(Result(Note, form.FormDecodeError), assigns, session) <- create_decoder
   case req.body {
     Ok(note) -> send(202, note.content)
     t -> {
       io.debug(t)
       send(400, "Bad Request")
     }
   }
 },
)