Kemal 0.24.0 released!

Kemal is a Fast, Effective, Simple web framework written in Crystal.

Hello everyone,

Kemal 0.24.0 is here

This release brings support for Crystal 0.26.0 and adds new features. There are also some breaking changes.

New and Shiny Exception Page

Thanks to the awesome exception_page shard, we got a new and shiny exception page implemented by @mamantoha

Custom Port Bindings

You can now bind a single Kemal server to multiple ports. Thanks to @straight-shoota

Kemal.run do |config|
  server = config.server.not_nil!
  server.bind_tcp "127.0.0.1", 3000
  server.bind_tcp "0.0.0.0", 3001
end

Breaking changes

• Removed env.params.files. You can use Crystal’s built-in HTTP::FormData.parse instead

post "/upload" do |env|
  HTTP::FormData.parse(env.request) do |upload|
    filename = file.filename

    if !filename.is_a?(String)
      "No filename included in upload"
    else
      file_path = ::File.join [Kemal.config.public_folder, "uploads/", filename]
      File.open(file_path, "w") do |f|
      IO.copy(file.tmpfile, f)
    end
    "Upload OK"
  end
end

• From now on to access dynamic url params in a WebSocket route you have to use:

ws "/:id" do |socket, context|
  id = context.ws_route_lookup.params["id"]
end

• Removed _method magic param from env.params.body.

Thanks for using and supporting Kemal. You can check the full CHANGELOG here.

P.S: You can support Kemal development via Patreon

Happy Crystalling