Supercharge your schemas with custom directives
summary
Shows how to implement runtime behavior with Apollo SchemaDirectiveVisitor, registers directives via makeExecutableSchema, and wires custom resolvers that override or replace field results. Gives a concrete replace directive example, an async rest directive that fetches external APIs, and a hasScope directive for token-based authorization that stacks with others. Demonstrates where to hook into field and object nodes, caveats about schema-first vs code-first, and a working tutorial site trygql.com.
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chapters (9)
- 0:00Start
- 1:06What Is a Schema Directive
- 1:37Advice on Directives
- 2:25Schema Directives
- 4:10Authentication
- 4:26String Formatting
- 9:47Rest Directive
- 12:02Custom Schema Directives
- 13:48Middleware
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