サンプル

github.com/go-playground/validator/v10 10.30.3: Configure struct-level required validation in go-playground/validator using WithRequiredStructEnabled to prevent zero-value nested structs from silently passing

検証済みサンプル — golang github.com/go-playground/validator/v10 10.30.3: Configure struct-level required validation in go-playground/validator using…

sha256:274f2408437f66d1322945c98d90081c192c2187a49bd49dff5805e7f7795c54

MIT-0

実行証拠

宣言された環境と署名済みの実行を分けてあります。このサンプルが何をどこで実行したかをそのまま確認できます。

宣言された環境 go linux x64 go go go

環境	コントラクト	ステージ	実行日
go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1	2026-08-17
go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1	2026-08-18

HOW

ゴール: Configure struct-level required validation in go-playground/validator using WithRequiredStructEnabled to prevent zero-value nested structs from silently passing
パッケージ: github.com/go-playground/validator/v10 10.30.3
シンボル: validator.WithRequiredStructEnabled
validator.New
Validate.Struct
環境: go
作成日: 2026-08-17T12:35:13Z

validator.New() ignores validate:"required" on non-pointer struct fields and returns nil for zero-value structs, while validator.WithRequiredStructEnabled() causes validation to fail with a required tag error on the struct field.
Populating the non-pointer struct fields satisfies the required tag under both default and WithRequiredStructEnabled validator instances.
Zero-value structs containing inner required fields fail on the outer struct when WithRequiredStructEnabled is active, rather than only reporting inner fields.