flask like asynchronous web framework written in Nim

Nim language has great macros supports. Metaprogramming is interesting to play with. Let's look at this asynchronous web framework based on macros route.

https://github.com/planety/starlight

Hello world

import starlight
var app = newApp(newSettings())

proc hello(ctx: Context) {.async, get(app, "/hello").} =
  resp "Hello world!"

app.run()

Vs flask

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello, World!'

Complex example

import starlight except loginPage
import logging
import htmlgen


func loginPage*(): string =
  return html(form(action = "/login",
      `method` = "post",
      "Username: ", input(name = "username", `type` = "text"),
      "Password: ", input(name = "password", `type` = "password"),
      input(value = "login", `type` = "submit")),
      xmlns = "http://www.w3.org/1999/xhtml")


var app = newApp(newSettings())

proc hello*(ctx: Context) {.async,
  get(app, "/"),
  post(app, "/"),
  get(app, "/hello")
  .} =
  resp "<h1>Hello, Prologue!</h1>"

proc home*(ctx: Context) {.async, route(app, "/home", HttpGet).} =
  resp "<h1>Home</h1>"

proc helloName*(ctx: Context) {.async, get(app, "/hello/{name}").} =
  resp "<h1>Hello, " & ctx.getPathParams("name", "Prologue!") & "</h1>"

proc redirectHome*(ctx: Context) {.async, route(app, "/redirect").} =
  resp redirect("/home")

proc loginGet*(ctx: Context) {.async, route(app, "/loginget").} =
  resp loginGetPage()

proc doLoginGet*(ctx: Context) {.async, route(app, "/loginpage", [HttpGet, HttpPost]).} =
  resp redirect("/hello/Nim")

proc login*(ctx: Context) {.async, get(app, "/login").} =
  resp loginPage()

proc doLogin*(ctx: Context) {.async, post(app, "/login").} =
  resp redirect("/hello/Nim")

app.run()

Comments

[jorjun]

Nim could really use a decorator syntax seems...