从 Ruby on Rails 到 Nexy

get "/api/hello", to: "hello#show"

class HelloController < ApplicationController  def show    render json: { message: "Hello" }  endend

async def GET():    return {"message": "Hello"}

resources :notes, only: [:index, :create, :show, :destroy]

from pydantic import BaseModel NOTES: dict[int, str] = {}  class NewNote(BaseModel):    title: str  async def GET():    return [{"id": id, "title": title} for id, title in NOTES.items()]  async def POST(note: NewNote):    id = max(NOTES, default=0) + 1    NOTES[id] = note.title    return {"id": id, "title": note.title}

from nexy.http import HTTPException from .index import NOTES  async def GET(id: int):    if id not in NOTES:        raise HTTPException(status_code=404, detail="No such note")    return {"id": id, "title": NOTES[id]}  async def DELETE(id: int):    NOTES.pop(id, None)    return {"deleted": id}

def create  item = params.require(:item).permit(:name, :price)  render json: item, status: :createdend

from pydantic import BaseModel, Field from nexy.http import JSONResponse  class NewItem(BaseModel):    name: str    price: float = Field(gt=0)  async def POST(item: NewItem):    return JSONResponse(item.model_dump(), status_code=201)

async def GET(q: str = "", page: int = 1):    return {"q": q, "page": page}

namespace :admin do  get "stats", to: "stats#show"end

class Admin::BaseController < ApplicationController  before_action :require_admin   private   def require_admin    head :forbidden unless request.headers["X-Role"] == "admin"  endend

async def GET():    return {"users": 3}

from nexy.http import Header, HTTPException  def require_admin(x_role: str = Header("")) -> None:    if x_role != "admin":        raise HTTPException(status_code=403, detail="Admins only")  dependencies = [require_admin]

after_action { response.set_header("X-App", "demo") }

from nexy.http import Request  async def middleware(request: Request, call_next):    response = await call_next(request)    response.headers["x-app"] = "demo"    return response

def index  @users = [{ name: "Ada" }, { name: "Alan" }]end

<ul>  <% @users.each do |user| %>  <li><%= user[:name] %></li>  <% end %></ul>

---users = [{"name": "Ada"}, {"name": "Alan"}]---<ul>  {% for user in users %}  <li>{{ user.name }}</li>  {% endfor %}</ul>

<!DOCTYPE html><html>  <body><%= yield %></body></html>

---children: prop[NexyElement]---<!DOCTYPE html><html>  <body>{{ children | safe }}</body></html>

<article><h2><%= title %></h2><%= yield %></article>

---title: prop[str]---<article>  <h2>{{ title }}</h2>  <Slot /></article>

---from "@/components/Card.nexy" import Card---<Card title="Latest">  <p>This week</p></Card>

<%= form_with url: notes_path do |form| %>  <%= form.text_field :title %>  <%= form.submit "Add" %><% end %>

def create  Note.create!(title: params[:title])  redirect_to notes_pathend

from nexy.decorators import Action TITLES: list[str] = []  @Actionasync def add_note(title: str) -> None:    TITLES.append(title)

---from src.actions.notes import TITLES---<form method="post" action="{{ __actions_path['add_note'] }}">  <input name="title">  <button type="submit">Add</button></form><ul>  {% for title in TITLES %}  <li>{{ title }}</li>  {% endfor %}</ul>

class Post < ApplicationRecord  scope :published, -> { where(published: true) }end

from sqlmodel import Field, SQLModel  class Post(SQLModel, table=True):    id: int | None = Field(default=None, primary_key=True)    title: str    published: bool = False

from sqlmodel import Session, select from src.configs.db import enginefrom src.models.post_model import Post  async def GET():    with Session(engine) as session:        posts = session.exec(select(Post).where(Post.published)).all()    return {"titles": [post.title for post in posts]}

def show  @post = POSTS.fetch(params[:slug]) { raise ActiveRecord::RecordNotFound }end

---from nexy import notFound POSTS = {"hello": "Hello, world"} slug: prop[str]if slug not in POSTS:    notFound()---<h1>{{ POSTS[slug] }}</h1>

<h1>Not found</h1>

def create  session[:user] = params[:name]  render json: { user: session[:user] }end

from nexy.core.models import NexyConfigModel  class NexyConfig(NexyConfigModel):    useAliases = {"@": "src"}    useSession = {"secret_key": "change-me"}

from pydantic import BaseModel from nexy.http import Request  class Login(BaseModel):    name: str  async def POST(request: Request, body: Login):    request.session["user"] = body.name    return {"user": body.name}

def index  expires_in 1.minute, public: trueend

---revalidate = 60---<h1>Blog</h1>

WelcomeMailerJob.perform_later(params[:email])head :accepted

from nexy.http import BackgroundTasks, JSONResponse  def send_welcome(email: str) -> None: ...  async def POST(email: str, tasks: BackgroundTasks):    tasks.add_task(send_welcome, email)    return JSONResponse({"queued": True}, status_code=202)

class EchoChannel < ApplicationCable::Channel  def receive(data)    transmit(data)  endend

from fastapi import WebSocket  async def SOCKET(websocket: WebSocket):    await websocket.accept()    await websocket.send_text(await websocket.receive_text())

RSpec.describe "Hello", type: :request do  it "says hello" do    get "/api/hello"    expect(response.parsed_body).to eq("message" => "Hello")  endend

from fastapi.testclient import TestClient from nexy.app import app  def test_hello():    assert TestClient(app).get("/api/hello").json() == {"message": "Hello"}