form0-connector-sqlite

Note

form0 is in active development and is available to use today. Its schema format and core concepts are stable in practice, but releases before 1.0 may include breaking changes. Pin your versions and review the release notes when upgrading. A formally stable release is coming.

form0-connector-sqlite stores form0 structured records in a local SQLite database. It keeps the complete form payload while projecting common metadata into dedicated columns and preserving parent-child relationships for repeatable sections.

🚀 Start with the CLI

The recommended integration path is form0-cli. From the interactive CLI, install and configure the connector:

form0> connector install form0-connector-sqlite
form0> connector configure form0-connector-sqlite
form0> connector test form0-connector-sqlite

Follow the form0 quickstart first if you do not already have a project.

The connector is for Node.js projects. React Native applications should use platform-native storage such as expo-sqlite; form0-cli intentionally blocks connector installation in React Native and Expo projects.

📦 Direct installation

npm install form0-connector-sqlite

Copy the variables you need from .env.example into a local .env.local file:

FORM0_CONNECTOR_SQLITE_PATH=./form0.db
FORM0_CONNECTOR_SQLITE_TABLE_NAME=form0_submissions
FORM0_CONNECTOR_SQLITE_CHILD_TABLE_NAME=form0_submissions_children

Do not commit local database files when they contain real submissions.

The connector can also be initialized directly:

import { Form0SQLiteConnector } from 'form0-connector-sqlite';

const connector = new Form0SQLiteConnector();

await connector.initialize();
console.log(await connector.healthCheck());

// Pass canonical structured records to connector.onFormSubmit(record).

await connector.destroy();

initialize(config, envVars) accepts explicit configuration overrides when environment variables are not appropriate for the host application.

Set FORM0_CONNECTOR_SQLITE_DEBUG=true to enable lifecycle diagnostics, including the resolved database filesystem path. Debug output may reveal local directory information, so do not enable it where logs are publicly accessible or shared with untrusted parties.

Storage behavior

• The database file and configured tables are created when the connector initializes.
• Main submissions and nested repeatable-section records retain their relationships.
• Canonical structured records are accepted through onFormSubmit().
• Server timestamps are added when records are stored.
• Retryable file-lock and I/O failures are retried once after reconnecting.
• healthCheck() reports connection health, and destroy() closes the database.

The host application remains responsible for file permissions, backups, retention, and safe handling of exported database files.

✅ Requirements

• Node.js 22 or newer
• Write access to the configured database directory
• A platform supported by the better-sqlite3 native dependency

📚 Documentation

• Connectors overview
• SQLite setup and configuration
• SQLite storage model and operations
• Direct integration
• CLI connector management

🔒 Security

Report vulnerabilities according to SECURITY.md. Protect the database file as sensitive application data and do not place it in a publicly served directory.

🤝 Support and contributing

See SUPPORT.md for help and CONTRIBUTING.md to contribute.

📄 License

MIT