One-liner
Supabase Auth provides a comprehensive, PostgreSQL-based authentication and authorization service with multiple user sign-in options and granular access control through Row Level Security.
Synopsis
Authentication Methods
Supabase offers a multi-faceted approach to user authentication. Users can sign in using traditional password-based methods with email or phone credentials, or they can opt for passwordless logins via magic links or OTPs. Additionally, Supabase supports OAuth social providers like Google and Facebook, SAML SSO, and includes a variety of social auth providers such as GitHub, Slack, and Spotify.
Third-Party Providers and Deep Linking
Configuring third-party providers is made easy with Supabase’s user-friendly interface, which allows the input of Client IDs and Secrets for enabling various services. Moreover, Supabase has addressed the setup of redirect URLs, including those needed for Netlify and Vercel preview URLs as well as mobile deep linking URIs.
Authorization with Row Level Security
Beyond authentication, Supabase enables complex authorization rules with PostgreSQL's Row Level Security (RLS). RLS and policies empower developers to create sophisticated and precise access control directly within the database. This negates the need for repetitive query filtering in code, as rules set in the database enforce access restrictions efficiently.
User Management and System Operation
Supabase administers several endpoints that simplify user management, from sign-ups to sign-outs. When users register, they receive a unique ID which can be referenced throughout the database, such as in a profiles table. The system works by generating JWTs for users, which are then used by PostgreSQL to check access permissions based on RLS policies.
Key Quotes
- "Auth is designed to work either as a standalone product, or deeply integrated with the other Supabase products."
- "Policies are PostgreSQL's rule engine. They are incredibly powerful and flexible, allowing you to write complex SQL rules which fit your unique business needs."
- "With policies, your database becomes the rules engine."
Make it stick
- Authentication, Simplified: Think of Supabase Auth as a Swiss Army knife for user sign-in, offering everything from password and magic links to social logins.
- Row Your Boat Securely: PostgreSQL Row Level Security policies act as the boat's ores, steering your data access in the right direction with precision.
- JWT as the Key: Like a digital key, JWTs unlock user access, letting PostgreSQL's RLS determine what they can see or do.
Talking points
- Did you know Supabase includes OAuth social providers, SAML SSO, and support for social auth from a broad spectrum of services including big names like GitHub, Twitter, and Spotify?
- Supabase's granular authorization is powered by PostgreSQL's Row Level Security, enabling you to build complex, database-enforced access controls without messy code filters.
- With Supabase, configuring third-party auth providers is just a click away, simplifying integration for developers.
This summary contains AI-generated information and may have important inaccuracies or omissions.