Routing nodes

Route — express.route

Defines an HTTP route and attaches a Handler Function to it.

• Inputs: in — "App"
• Outputs: out — "Handler"
• Config fields:

Key	Type	Default	Notes
method	select	GET	One of GET, POST, PUT, DELETE, PATCH.
path	text	/

• Constraints: the "Handler" output must be wired to a Handler Function node — an unattached Route, or one wired to anything else, fails compilation with a clear error naming the route. Chain additional Handler Functions off the first one's "Next" output to register more than one on the same route.

A Route has no "Async Handler" setting of its own — enable Async Handler on the Handler Function(s) it's attached to instead (see the npm Package Require example).

function handler(req, res, next) {
  res.status(200).json({ message: "Hello World" });
}

app.get("/hello", handler);

Wiring a chain of Handler Functions — Route → Handler Function A → Handler Function B — compiles to app.get(path, handlerA, handlerB), with each handler declared separately above; every handler but the last must call next() in its body to reach the next one. See the Logic reference for the Handler Function node itself.