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Build an efficient event registration system with Lovable. Follow our step-by-step guide to streamline sign-ups, manage events, and boost user engagement.
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Creating a New Lovable Project for Event Registration
Setting Up the Event Registration Form UI
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registration\_form.html in the project root.registration\_form.html. This code builds the front-end form where users can enter their event information.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Event Registration</title>
</head>
<body>
<h1>Register for the Event</h1>
<form id="registrationForm" action="register" method="POST">
<label for="fullName">Full Name:</label>
<input type="text" id="fullName" name="fullName" required>
<br><br>
<label for="email">Email:</label>
<input type="email" id="email" name="email" required>
<br><br>
<label for="ticketType">Ticket Type:</label>
<select id="ticketType" name="ticketType">
<option value="standard">Standard</option>
<option value="vip">VIP</option>
</select>
<br><br>
<button type="submit">Register</button>
</form>
</body>
</html>
Implementing the Event Registration Backend Logic
event_registration_handler.js in the project root. This file will contain the code that processes the submitted registration data.event_registration_handler.js. Even though Lovable does not have a terminal, you can include dependencies by referencing them directly in your code. In this example, we simulate dependency inclusion by adding a comment with instructions.
// NOTE: Lovable manages dependencies automatically by reading these comments.
// To include any additional libraries, please add them below in your code as required.
const http = require('http');
const url = require('url');
const querystring = require('querystring');
// In-memory storage for event registrations
const registrations = [];
// Create a simple HTTP server to handle form submissions
const server = http.createServer((req, res) => {
if (req.method === 'POST' && req.url === '/register') {
let body = '';
req.on('data', chunk => {
body += chunk;
});
req.on('end', () => {
const postData = querystring.parse(body);
registrations.push(postData);
res.writeHead(200, {'Content-Type': 'text/html'});
res.end('<h1>Registration Successful</h1><p>Thank you, ' + postData.fullName + '! Your registration has been recorded.</p>');
});
} else if (req.method === 'GET') {
// Serve the registration form for GET requests to the root route
// (For simplicity, the HTML is served from the registration\_form.html file content)
res.writeHead(200, {'Content-Type': 'text/html'});
// In Lovable, use the built-in file retrieval to load registration\_form.html
// Alternatively, you can embed the HTML content here.
res.end(require('fs').readFileSync('registration\_form.html'));
} else {
res.writeHead(404, {'Content-Type': 'text/plain'});
res.end('Not Found');
}
});
// Listen on the dynamic port provided by Lovable
const PORT = process.env.PORT || 3000;
server.listen(PORT, () => {
console.log('Server is running on port ' + PORT);
});
Connecting the UI and the Backend
action attribute in your registration\_form.html form is set to register as shown in the form snippet. This makes sure that on submission, the POST request is directed to the backend endpoint.registration_form.html and event_registration\_handler.js are part of the same project directory. Lovable will serve these files correctly when you run the project.
Final Testing and Deployment
event_registration_handler.js.registration\_form.html where you can input test data.Connect with our team to unlock the full potential of no-code solutions with a no-commitment consultation!
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const express = require('express');
const mongoose = require('mongoose');
const app = express();
app.use(express.json());
const Schema = mongoose.Schema;
const registrationSchema = new Schema({
user: { type: String, required: true },
eventId: { type: Schema.Types.ObjectId, ref: 'Event', required: true },
registrationDate: { type: Date, default: Date.now },
tickets: [{
type: { type: String, enum: ['standard', 'vip'], default: 'standard' },
quantity: { type: Number, required: true }
}]
});
const Registration = mongoose.model('Registration', registrationSchema);
app.post('/api/events/register', async (req, res) => {
try {
const { user, eventId, tickets } = req.body;
// Custom validation e.g., registration window check can be added here
const newRegistration = new Registration({ user, eventId, tickets });
await newRegistration.save();
res.status(201).json({ success: true, registrationId: newRegistration.\_id });
} catch (error) {
res.status(400).json({ success: false, message: error.message });
}
});
mongoose.connect('mongodb://localhost:27017/lovable', { useNewUrlParser: true, useUnifiedTopology: true })
.then(() => {
app.listen(3000, () => console.log('Server running on port 3000'));
})
.catch(err => console.error('MongoDB connection error:', err));
const express = require('express');
const axios = require('axios');
const Registration = require('./models/Registration');
const router = express.Router();
router.post('/api/events/register/external', async (req, res) => {
try {
const { user, eventId, tickets } = req.body;
// Save registration locally
const registration = await Registration.create({ user, eventId, tickets });
// Prepare payload for external API
const payload = {
registrationId: registration.\_id,
user,
eventId,
tickets
};
// Call external Lovable API to sync registration
const externalResponse = await axios.post('https://api.lovable.com/v1/registrations', payload, {
headers: {
'Authorization': `Bearer ${process.env.LOVABLE_API_TOKEN}`,
'Content-Type': 'application/json'
}
});
// Update local registration with external confirmation details
registration.externalConfirmation = externalResponse.data.confirmationId;
await registration.save();
res.status(201).json({
success: true,
registrationId: registration.\_id,
confirmationId: externalResponse.data.confirmationId
});
} catch (error) {
res.status(500).json({ success: false, message: error.message });
}
});
module.exports = router;
const crypto = require('crypto');
const express = require('express');
const Registration = require('./models/Registration');
const app = express();
app.use(express.json({
verify: (req, res, buf) => { req.rawBody = buf; }
}));
const LOVABLE_WEBHOOK_SECRET = process.env.LOVABLE_WEBHOOK_SECRET;
app.post('/api/webhooks/lovable', async (req, res) => {
const signature = req.headers['x-lovable-signature'];
const computedSignature = crypto.createHmac('sha256', LOVABLE_WEBHOOK_SECRET)
.update(req.rawBody)
.digest('hex');
if (signature !== computedSignature) {
return res.status(400).send('Invalid signature');
}
try {
const { registrationId, newStatus, additionalTickets } = req.body;
const registration = await Registration.findById(registrationId);
if (!registration) {
return res.status(404).send('Registration not found');
}
registration.status = newStatus;
if (additionalTickets && registration.tickets) {
registration.tickets.forEach(ticket => {
ticket.quantity += additionalTickets[ticket.type] || 0;
});
}
await registration.save();
res.status(200).send('Webhook processed successfully');
} catch (error) {
res.status(500).send('Server error');
}
});
app.listen(3001, () => {
console.log('Webhook listener running on port 3001');
});
Connect with our team to unlock the full potential of no-code solutions with a no-commitment consultation!
Book a call with an Expert
Starting a new venture? Need to upgrade your web app? RapidDev builds application with your growth in mind.
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