Is there a way to use Twilio API with Express to send personalized text messages?

Currently, I am working on creating a basic function for a website that involves an input field and a button. The idea is to have Twilio API send a message with the content entered in the input field when the button is clicked. Below is the index.js file which contains the function responsible for sending the message. I'm uncertain whether I should use the POST method or GET - any insights are appreciated.

let input = document.querySelector("input").value;
document.querySelector("button").addEventListener("click", whatTheHell);
let whatTheHell = () => {
  fetch("/sendSms")
    .then((res) => res.json())
    .then((res) => console.log(res))
    .catch((err) => console.log(err));
};

This is the express.js file containing the Twilio API setup for sending the SMS:

const express = require("express");
if (process.env.NODE_ENV !== "production") {
  require("dotenv").config();
}
const accountSid = process.env.accountSid;
const authToken = process.env.authToken ; 
const app = express();
const client = require("twilio")(accountSid, authToken);
app.use(express.json());
app.use(express.static("public"));

app.get("/sendSms", (req, res) => {
  client.messages
    .create({
      body: "message from me",
      messagingServiceSid: "MGXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
      to: "NUMBER",
    })
    .then((message) => {
      res.json({ message: message }).done();
    });
});

app.listen(3000, () => {
  console.log("Server Started");
});

In the 'body: "message from me"' section, I aim to have something like 'body: user.input' where the message content is dynamically taken from user input. I've attempted using the POST method with 'req.body.msg' and 'msg' being the input value, but it seems to not accept the post method successfully.

Answer №1

Hello from your Twilio developer advocate!

If you want to optimize this process, I suggest transforming it into a POST request. To achieve this, some adjustments are necessary in order to transfer input data from the front end to the server. Let’s begin with the front end.

Instead of retrieving the input value immediately, it’s more efficient to wait for the button click event to capture the value. Once the button is clicked, proceed by initiating a POST request containing the desired message within the body of that request. One way to accomplish this is by using JSON.stringify on an object of data.

let input = document.querySelector("input");
document.querySelector("button").addEventListener("click", sendMessage);
let sendMessage = () => {
  const message = input.value;
  fetch("/sendMessage", {
    method: "POST",
    body: JSON.stringify({ message: message }),
    headers: {
      'Content-Type': 'application/json'
    }
  })
    .then((res) => res.json())
    .then((res) => console.log(res))
    .catch((err) => console.log(err));
};

Now, let’s turn our attention to the server side where we must update your endpoint to accept POST requests. Thankfully, you’re already utilizing the express JSON parsing middleware, making the message accessible as req.body.message. This information can then be utilized in the Twilio request.

const express = require("express");
if (process.env.NODE_ENV !== "production") {
  require("dotenv").config();
}
const accountSid = process.env.accountSid;
const authToken = process.env.authToken ; 
const app = express();
const client = require("twilio")(accountSid, authToken);
app.use(express.json());
app.use(express.static("public"));

app.post("/sendMessage", (req, res) => {
  const message = req.body.message;
  client.messages
    .create({
      body: message,
      messagingServiceSid: "MGXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
      to: "NUMBER",
    })
    .then((message) => {
      res.json({ message: message });
    })
    .catch((error) => {
      console.error(error);
      res.status(500).json({ error: error.message });
    });
});

app.listen(3000, () => {
  console.log("Server Started");
});

By implementing these changes, your system should operate smoothly.

Answer №2

To transfer a message to your express server and retrieve it on the server, you can utilize a query parameter. Check out this helpful guide: How to get GET (query string) variables in Express.js on Node.js?.

When switching your method from get to post, remember to update your Express function as well. For example, change app.get() to app.post()

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