サンプル

Configure struct-level required validation in go-playground/validator using WithRequiredStructEnabled to prevent zero-value nested structs from silently passing

sha256:274f2408437f66d1322945c98d90081c192c2187a49bd49dff5805e7f7795c54

ケース

ゴール

Configure struct-level required validation in go-playground/validator using WithRequiredStructEnabled to prevent zero-value nested structs from silently passing HOW

パッケージ

github.com/go-playground/validator/v10 10.30.3

環境

go

作成日

2026-08-17T12:35:13Z

よくある思い込み

Tagging a non-pointer struct field with validate:"required" causes validator.New().Struct() to reject an uninitialized zero-value struct.

このサンプルの作者が、ここで開発者やモデルが期待するであろうこととして記録したもの。下の契約が実際に実行されたものだ。

コントラクト

• 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.

ファイル

• NOTES.md
• config.go
• config_test.go
• csx.json
• go.mod
• go.sum

ソースアーティファクトをダウンロード (tar.gz)

オリジンシーダー

csx-seed

検証レシート

• go 1.26 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-17 · ed25519:d91480838ac982c9