no method named `write` found for type `nickel::Response ?

[plailopo]

It would to stream on Response, but write method is missing

 router.get("/treep/search", middleware! { |req, mut res|
         res.write(b"Foo");
         return res.send("");
 })

the error:
no method named write found for type nickel::Response<'mw> in the current scope

[Simon Teixidor]

The Write trait is implemented for Response<'a, D, Streaming>, but the response is not Streaming in your context. If you tell us what you're trying to accomplish, we might be able to suggest another way to do it.

[plailopo]

Ok, this is a complete example of my code

  fn get_stream<'mw>(req: &mut Request, mut res: Response<'mw>)
           -> MiddlewareResult<'mw>  {

    stream(&mut res);
    return res.send("");
  }

fn stream<P: ?Sized>(buf: &mut P)
    where P: Write
{
    for x in 0..10 {
        let elm = "foo foo".to_string();
        buf.write( &elm.as_bytes() );
    }
}

[Simon Teixidor]

That still doesn't tell us anything of your actual use case. Anyway, if you want to use the Write API directly on a response, it is possible:

fn hello_world<'mw>(_req: &mut Request, res: Response<'mw>) -> MiddlewareResult<'mw> {
    let mut res = res.start().ok().unwrap();
    res.write(b"Hello World");
    Ok(Action::Halt(res))
}

You'd need to add error handling code, though.

If your responses are not really long, I'd suggest you write to a memory buffer, using the std::io::Cursor trait, and the respond with that buffer.

[plailopo]

Yeah! It work, thanks

[Jeff Olhoeft]

This appears to have been resolved, closing.