Building EasyPollVote: Integrating Next.js with Supabase for Serverless Polling

Welcome to the First DEV LOG!

FrancisTRᴅᴇᴠ has launched EasyPollVote (EasyPV), a polling system built on the Next.js and Supabase stack. The application currently implements a three-field data schema to facilitate rapid user feedback without requiring authentication.

Why This Matters

In early-stage rapid prototyping, developers often prioritize core CRUD functionality over robust validation to test infrastructure viability. While the current implementation lacks duplicate vote prevention, it successfully demonstrates the integration of serverless functions with Supabase PostgreSQL backends to manage dynamic data flow in a public-facing web application. This approach highlights the trade-off between speed-to-market and comprehensive data integrity during the MVP phase.

Key Insights

• Database integration utilizes Supabase for handling Name, Email, and Vote strings in a central table (2026).
• Client-side tallying is performed by mapping over GET request results to categorize votes for specific entities.
• Form validation is currently limited to presence checks, failing if the vote field is empty.
• Next.js API routes located in the /vote directory abstract the database communication layer.
• The system architecture allows for account-free voting to maximize user participation and conversion.

Working Examples

POST request logic for submitting poll data to Supabase

if (formData.vote == "") { setMessage("Error: Please select a Pokémon to vote for."); } else { const res = await fetch("/vote", { method: "POST", headers: { "Content-Type": "application/json", }, body: JSON.stringify(formData), }); if (!res.ok) { setMessage("Error: Form submission failed. Please try again."); } else { setMessage("Form submitted successfully! Thank you for voting."); setFormData({ name: "", email: "", vote: "" }); } }

GET request logic for fetching and aggregating poll results

useEffect(() => { async function fetchVotes() { const res = await fetch('/vote'); const data = await res.json(); let pika = 0; let blast = 0; let totalVotes = 0; data.TotalVotes.forEach((row) => { if (row.Vote === 'Pikachu') pika++; if (row.Vote === 'Blastoise') blast++; }); totalVotes = pika + blast; setTotalVotes(totalVotes); setPikachuVotes(pika); setBlastoiseVotes(blast); setLoading(false); } fetchVotes(); }, []);

Practical Applications

• Rapid Prototype Deployment: Using Vercel and Supabase for immediate feedback on MVP features. Pitfall: Lack of validation allows for data manipulation through duplicate submissions.
• Serverless Data Aggregation: Calculating totals client-side from raw database rows. Pitfall: Performance degradation as the total number of votes grows, requiring server-side aggregation for scalability.

References:

• https://easypollvote.vercel.app