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Json Pointer Laravel Package
ergebnis/json-pointer
RFC 6901 JSON Pointer abstraction for PHP. Create and convert reference tokens and pointers between plain strings, JSON strings, and URI fragment identifiers, handling proper escaping/encoding. Install via Composer: ergebnis/json-pointer.
📃 Provides a composer package with an abstraction of a JSON pointer.
Frequently asked questions about Json Pointer
- How do I use this package in Laravel API responses to validate JSON pointers?
- Use the `Specification` class to define declarative rules for JSON pointers, then integrate it with Laravel’s validation pipeline via `FormRequest` or `Validator`. For example, validate a pointer like `/data/items/0` by creating a specification and applying it in your request validation logic. This ensures only allowed pointers are processed, improving API security.
- Does this package work with Laravel 9+ and PHP 8.0–8.5?
- Yes, the package supports PHP 8.0 through 8.5 and is fully compatible with Laravel 9+. It leverages modern PHP features like strict typing and immutability, making it a seamless fit for newer Laravel applications. Always check the package’s changelog for version-specific updates.
- Can I use this for deep-linking in SPAs or GraphQL-like queries?
- Absolutely. The package natively supports URI fragment identifiers (e.g., `#/data/items`), which are perfect for deep-linking in SPAs or constructing GraphQL-like query paths. Convert between plain strings, JSON strings, and URI fragments using `ReferenceToken` and `JsonPointer` classes.
- How does this compare to PHP 8.3’s built-in `json_path()` for Laravel?
- While PHP 8.3’s `json_path()` offers basic JSON traversal, this package provides a standardized RFC 6901-compliant abstraction with additional features like URI fragment support, immutability, and declarative validation via `Specification`. Use `json_path()` for lightweight needs, but opt for this package if you need strict compliance or advanced validation.
- Is there a performance impact when using this package in high-traffic APIs?
- The package is optimized for performance, but for high-throughput APIs, benchmark pointer resolution against native PHP methods (e.g., `json_decode` + manual traversal). In most cases, the overhead is negligible, especially when using immutable `JsonPointer` objects for caching or repeated operations.
- How can I integrate this with Laravel’s API Resources for nested data?
- Use the `JsonPointer` class to dynamically reference nested resources in your `JsonResource` classes. For example, construct a pointer like `JsonPointer::fromString('/data/relationships')` to link to related data. This works seamlessly with Laravel’s API resource serialization and HAL/JSON API compliance.
- What’s the best way to handle malformed JSON pointers in user-facing APIs?
- Use the `Specification` class to validate pointers before processing. Return a `400 Bad Request` response with a descriptive error message if validation fails. For example, reject pointers with invalid characters or paths that don’t match your API’s schema. This ensures robustness in production.
- Can I use this package for testing Laravel applications with pointer-based assertions?
- Yes, the package simplifies testing by providing methods to assert JSON pointer paths. For example, use `JsonPointer::fromString('/data/items')` in your tests to verify nested data structures. It integrates well with Laravel’s testing tools, including PestPHP or PHPUnit, for cleaner and more maintainable assertions.
- How do I convert between plain strings, JSON strings, and URI fragments?
- Use the `ReferenceToken` class to convert between formats. For example, `ReferenceToken::fromString('foo/bar')` creates a token that can be converted to a JSON string with `toJsonString()` or a URI fragment with `toUriFragmentIdentifierString()`. This handles all required escaping and encoding per RFC 6901.
- Who maintains this package, and how can I contribute or report issues?
- The package is maintained by the `ergebnis` team, with active CI/CD pipelines and regular updates. Contributions are welcome via GitHub issues or pull requests. Report bugs or feature requests on the [GitHub repository](https://github.com/ergebnis/json-pointer). The package’s small scope and clear documentation make it easy to contribute.
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