Poka-Yoke in PHP: Guarding Business Operations Before They Run

说明与用途

Novora PokaYoke 允许 PHP 开发者显式检查业务操作的前置条件，收集所有违规，并仅在所有检查通过时执行操作，提升代码可读性和可维护性。

问题

Business operations often require multiple independent preconditions; inline checks can hide failures and only report the first missing condition.

结果

The package provides a concise API to define rules, collect violations, and guard operations, improving clarity and maintainability of business logic.

工作流

• Define rule classes implementing Novora\PokaYoke\Rule that return null or a Violation.
• Instantiate Novora\PokaYoke\Guard and call check() with the context and an array of rules.
• If check() returns allowed, proceed with the operation; otherwise handle violations.
• Alternatively, use Guard::execute() to combine checking and callback execution in one step, catching OperationBlocked to access violations.
• Ensure rules are side‑effect free and application decides how to present or translate violation messages.

证据

A separate check followed by an action is useful for displaying diagnostics, but the package also offers a compact operation boundary:

来源

The initial v1.0.0 release was validated with 15 PHPUnit tests (27 assertions)...

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A successful precondition check does not guarantee the state will still be valid when the callback commits its changes.

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