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Build a scalable Resume Builder backend with Lovable. Step-by-step guide covering API design, data models, authentication, testing, and deployment.
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Starting a new venture? Need to upgrade your web app? RapidDev builds application with your growth in mind.
We’ll add a simple Resume Builder backend inside your Lovable app: serverless API routes (REST) to create, read, update, and delete resume records stored in Supabase. The backend will use the Supabase server client (SERVICE\_ROLE key stored in Lovable Secrets) and a lightweight API surface under src/pages/api/resumes. You’ll get a small test frontend page to exercise the endpoints in Preview.
All work happens inside Lovable Chat Mode using file edits and Preview. No terminal required. Steps: ask Lovable to create the server API files, a Supabase helper, and a test page; set Secrets in Lovable Cloud (SUPABASE_URL and SUPABASE_SERVICE_ROLE_KEY); create the resumes table in Supabase via Supabase web UI; use Preview to test endpoints; Publish to deploy. If you need DB migrations via CLI, export to GitHub and run migrations outside Lovable — labeled below.
Paste each of the following prompts into Lovable chat (one at a time). Lovable will apply file changes. After each prompt use Preview to verify and iterate.
Goal: Add a small server-side Supabase client wrapper that reads secrets from environment variables.
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src/lib/supabaseServer.tsSUPABASE_URL and SUPABASE_SERVICE_ROLE_KEY in Lovable Cloud Secrets UI.Prompt to paste:
// Create file src/lib/supabaseServer.ts
// Export a function createSupabaseServer() that returns a Supabase client using SERVICE_ROLE key
import { createClient } from '@supabase/supabase-js'
// // createSupabaseServer() should use process.env.SUPABASE_URL and process.env.SUPABASE_SERVICE_ROLE_KEY
export function createSupabaseServer() {
const url = process.env.SUPABASE_URL || ''
const key = process.env.SUPABASE_SERVICE_ROLE_KEY || ''
if (!url || !key) {
throw new Error('Missing SUPABASE_URL or SUPABASE_SERVICE_ROLE_KEY environment variable')
}
return createClient(url, key)
}
Goal: Implement CRUD API endpoints at src/pages/api/resumes/index.ts and src/pages/api/resumes/[id].ts.
src/pages/api/resumes/index.ts, src/pages/api/resumes/[id].tsPrompt to paste:
// Create file src/pages/api/resumes/index.ts
import type { NextApiRequest, NextApiResponse } from 'next'
import { createSupabaseServer } from '../../lib/supabaseServer' // // adjust path if necessary
export default async function handler(req: NextApiRequest, res: NextApiResponse) {
const supabase = createSupabaseServer()
if (req.method === 'POST') {
const { owner_id, data } = req.body
const { data: created, error } = await supabase.from('resumes').insert([{ owner_id, data }]).select().single()
if (error) return res.status(500).json({ error: error.message })
return res.status(201).json(created)
}
if (req.method === 'GET') {
const { data: rows, error } = await supabase.from('resumes').select('*').limit(50)
if (error) return res.status(500).json({ error: error.message })
return res.status(200).json(rows)
}
res.setHeader('Allow', ['GET', 'POST'])
res.status(405).end(`Method ${req.method} Not Allowed`)
}
// Create file src/pages/api/resumes/[id].ts
import type { NextApiRequest, NextApiResponse } from 'next'
import { createSupabaseServer } from '../../lib/supabaseServer'
export default async function handler(req: NextApiRequest, res: NextApiResponse) {
const supabase = createSupabaseServer()
const { id } = req.query
if (req.method === 'GET') {
const { data: row, error } = await supabase.from('resumes').select('*').eq('id', id).single()
if (error) return res.status(404).json({ error: error.message })
return res.status(200).json(row)
}
if (req.method === 'PUT') {
const updates = req.body
const { data: updated, error } = await supabase.from('resumes').update(updates).eq('id', id).select().single()
if (error) return res.status(500).json({ error: error.message })
return res.status(200).json(updated)
}
if (req.method === 'DELETE') {
const { error } = await supabase.from('resumes').delete().eq('id', id)
if (error) return res.status(500).json({ error: error.message })
return res.status(204).end()
}
res.setHeader('Allow', ['GET', 'PUT', 'DELETE'])
res.status(405).end(`Method ${req.method} Not Allowed`)
}
Goal: Add a frontend page at src/pages/test-resume.tsx with buttons to call the endpoints so you can verify in Lovable Preview.
src/pages/test-resume.tsxPrompt to paste:
// Create file src/pages/test-resume.tsx
import React, { useState } from 'react'
export default function TestResumePage() {
const [output, setOutput] = useState<any>('')
async function createDemo() {
const resp = await fetch('/api/resumes', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ owner_id: 'demo-user', data: { name: 'Demo User', sections: [] } }),
})
setOutput(await resp.json())
}
async function listAll() {
const resp = await fetch('/api/resumes')
setOutput(await resp.json())
}
async function getById() {
const id = prompt('resume id?')
if (!id) return
const resp = await fetch('/api/resumes/' + id)
setOutput(await resp.json())
}
async function deleteById() {
const id = prompt('resume id to delete?')
if (!id) return
const resp = await fetch('/api/resumes/' + id, { method: 'DELETE' })
setOutput({ status: resp.status })
}
return (
<div style={{ padding: 20 }}>
<h1>Test Resume API</h1>
<button onClick={createDemo}>Create Demo Resume</button>
<button onClick={listAll}>List Resumes</button>
<button onClick={getById}>Get by ID</button>
<button onClick={deleteById}>Delete by ID</button>
<pre>{JSON.stringify(output, null, 2)}</pre>
</div>
)
}
/test-resume. Use the buttons to create and list resumes.id; GET list shows records; GET by id returns that record; DELETE returns 204 status.
resumes table in Supabase web UI with columns: id (uuid, primary, default gen_random_uuid()), owner_id (text), data (jsonb), inserted_at (timestamp default now()).
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This prompt helps an AI assistant understand your setup and guide to build the feature
This prompt helps an AI assistant understand your setup and guide to build the feature
This prompt helps an AI assistant understand your setup and guide to build the feature
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.
Build a small API that stores normalized profile data (Supabase/Postgres), uses secrets in Lovable for your AI key, generates resumes via a prompt-first AI endpoint, validates + sanitizes inputs, caches rendered outputs, and keep migrations and heavy ops outside Lovable (use Supabase GUI or GitHub CI after export). In Lovable, use Chat Mode to edit files, Preview to try endpoints, Secrets UI for keys, and GitHub sync to run DB migrations or advanced CI that needs a terminal.
// Express endpoint to save profile and generate resume via AI
import express from 'express';
import fetch from 'node-fetch';
import { createClient } from '@supabase/supabase-js';
const app = express();
app.use(express.json());
const supabase = createClient(process.env.SUPABASE_URL, process.env.SUPABASE_KEY);
// Save profile
app.post('/profile', async (req, res) => {
// // validate/sanitize incoming JSON here
const profile = req.body;
await supabase.from('profiles').upsert(profile);
res.json({ ok: true });
});
// Generate resume
app.post('/generate', async (req, res) => {
const profile = req.body; // assume validated
// // build a clear prompt with examples
const prompt = `Convert this JSON profile to a concise reverse-chronological resume:\n\n${JSON.stringify(profile)}`;
const r = await fetch('https://api.openai.com/v1/chat/completions', {
method: 'POST',
headers: {
'Authorization': `Bearer ${process.env.OPENAI_API_KEY}`,
'Content-Type': 'application/json'
},
body: JSON.stringify({
model: 'gpt-4o-mini',
messages: [{ role: 'user', content: prompt }],
max_tokens: 800
})
});
const data = await r.json();
const text = data?.choices?.[0]?.message?.content || '';
// // sanitize HTML if you convert to HTML, cache result if needed
res.json({ resume: text });
});
export default app;
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