Resources
Express.js
Eta no longer supports the Express.js app.engine() function, but it's still completely possible to use with Express.js! Here's a quick example.
import express from "express"
import path from "node:path"
import { Eta } from "eta"
const app = express()
const eta = new Eta({
// Views directory path
views: path.join(import.meta.dirname, "views"), // on Deno : `${Deno.cwd()}/views/`
// Any other option...
cache: true
})
app.get("/", (req, res) => {
const renderedTemplate = eta.render("index", { title: "Hello", place: "there!" }) // create `index.eta` in the `views` folder
res.status(200).send(renderedTemplate)
})
app.listen(3000, () => {
console.log("Server listening on port 3000")
})Note: import.meta.dirname requires Node 20.11+.
Alternatively, define an Express app engine using ETA
Missing the good'old res.render to render computed templates ? Here is a quick walk around to achieve the same behaviour throughout the whole application.
Note : app.engine("eta", eta.render) is no longer supported on v3.x.x for Node.js and Deno
import express from "express"
import path from "node:path"
import { Eta } from "eta"
// Create app
const app = express()
// Setup eta
const eta = new Eta({ views: path.join(import.meta.dirname, "views") })
app.engine("eta", buildEtaEngine())
app.set("view engine", "eta")
// Home route
app.get("/", (req, res) => {
res.render("home", { message: "Hello world !" }) // create `home.eta` in the `views` folder
});
// Start server
app.listen(3000, () => {
console.log("Server listening on port 3000")
});
function buildEtaEngine() {
return (path, opts, callback) => {
try {
const fileContent = eta.readFile(path);
const renderedTemplate = eta.renderString(fileContent, opts);
callback(null, renderedTemplate);
} catch (error) {
callback(error);
};
};
}Note: import.meta.dirname requires Node 20.11+.