API Design Patterns for FileMaker-Backed Services

Expert

Apply proven API design patterns -- resource modeling, HATEOAS links, versioned error responses, and idempotent writes -- to services built on FileMaker.

What you'll learn

How to model FM tables as REST resources with consistent URL patterns
How to design idempotent create and update endpoints
How to return hypermedia links for resource navigation
How to design a versioned, structured error response format

FileMaker is often the data layer behind a public-facing API. The design of that public API -- its resource model, URL structure, error format, and hypermedia links -- is independent of FM internals. Good API design makes integrations intuitive, forward-compatible, and easy to debug. This lesson applies REST best practices to FM-backed services.

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Resource modeling over FM tables

Map FM tables to REST resources. Use plural nouns for collection URLs, and nest related resources under their parent. FM recordId maps to the resource ID, but expose a client-supplied ID (UUID) when possible.

TEXT

// Resource model for a CRM backed by FileMaker:
GET    /api/contacts              -> list contacts (FM find)
POST   /api/contacts              -> create contact (FM create)
GET    /api/contacts/:id          -> get one contact (FM get by recordId)
PATCH  /api/contacts/:id          -> update contact (FM update)
DELETE /api/contacts/:id          -> delete contact (FM delete)

// Nested resource:
GET    /api/contacts/:id/invoices -> contact's invoices (FM portal find)
POST   /api/contacts/:id/invoices -> add invoice (FM portal create)

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