Oihana PHP System

ValidatorTrait uses trait:short, trait:short

Provides helper methods for validation and error handling within a controller.

Trait ValidatorTrait

Tags
see
https://github.com/somnambulist-tech/validation

Table of Contents

Properties

$container  : Container
The DI container reference.
$customRules  : array<string|int, mixed>
The custom validation rules definitions.
$rules  : array<string|int, mixed>
The rules definitions used in the prepareRules method to initialize a validation process in the POST/PATCH/PUT and custom methods.
$validator  : Factory
The validator reference.

Methods

addRules()  : void
Register the extra validator's rules.
fail()  : ResponseInterface|null
Generates a structured error response with an HTTP status code and optional detailed messages.
getValidatorError()  : ResponseInterface|null
Returns an error if the validator fails.
initCustomValidationRules()  : array<string|int, mixed>
Returns the list of all extra-rules to initialize the validator.
initializeValidator()  : static
Sets the current internal validator of the controller.
prepareRules()  : array<string|int, mixed>
Merge the default common and the specific method's rules.
response()  : ResponseInterface
Return a response in the format accepted by the client : JSON by default or CBOR.
status()  : ResponseInterface|null
Outputs a generic HTTP status message in a JSON response.
success()  : mixed
Outputs a success message with optional JSON metadata.
successWithNewBody()  : mixed
Same as {@see self::success()} but guarantees a fresh response body stream before writing the envelope.
withFreshBody()  : ResponseInterface|null
Returns the same response with a fresh, empty body stream.

Properties

$container

The DI container reference.

public Container $container

$customRules

The custom validation rules definitions.

public array<string|int, mixed> $customRules = []

$rules

The rules definitions used in the prepareRules method to initialize a validation process in the POST/PATCH/PUT and custom methods.

public array<string|int, mixed> $rules = []
Tags
see
More

informations in the the prepareRules method definition.

Methods

addRules()

Register the extra validator's rules.

public addRules([array<string|int, mixed> $rules = [] ]) : void
Parameters
$rules : array<string|int, mixed> = []
Tags
throws
DependencyException
NotFoundException

fail()

Generates a structured error response with an HTTP status code and optional detailed messages.

public fail(ServerRequestInterface|null $request, ResponseInterface|null $response[, int|string|null $code = 400 ][, string|null $details = null ][, array<string|int, mixed> $options = [] ][, string|null $accept = null ]) : ResponseInterface|null

Automatically logs the error if logging is enabled.

Parameters
$request : ServerRequestInterface|null

Optional PSR-7 Request object.

$response : ResponseInterface|null

The PSR-7 Response object.

$code : int|string|null = 400

The HTTP status code (default: 400).

$details : string|null = null

Optional detailed error message to override default description.

$options : array<string|int, mixed> = []

Optional array of additional data to include (e.g., errors).

$accept : string|null = null

The header accepted by the client : 'application/cbor' or by default 'application/json'

Tags
example
return $this->fail(
    $response,
    406,
    'fields validation failed',
    [
        'firstName' => 'firstName is required',
        'lastName'  => 'lastName must be a string'
    ]
);
Return values
ResponseInterface|null

Returns a PSR-7 Response object with JSON content or null if $response is not provided.

getValidatorError()

Returns an error if the validator fails.

public getValidatorError(ServerRequestInterface|null $request, ResponseInterface|null $response, Validation $validation[, array<string|int, mixed> $errors = [] ][, int|string $code = 400 ]) : ResponseInterface|null
Parameters
$request : ServerRequestInterface|null

Optional PSR-7 Request object.

$response : ResponseInterface|null

The PSR-7 Response object.

$validation : Validation
$errors : array<string|int, mixed> = []
$code : int|string = 400
Return values
ResponseInterface|null

initCustomValidationRules()

Returns the list of all extra-rules to initialize the validator.

public initCustomValidationRules() : array<string|int, mixed>

Overrides this method to extends the default rules definitions.

Return values
array<string|int, mixed>

initializeValidator()

Sets the current internal validator of the controller.

public initializeValidator([array<string|int, mixed> $init = [] ]) : static

By default, creates a new Validator instance and initialize it.

Parameters
$init : array<string|int, mixed> = []
Tags
throws
DependencyException
NotFoundException
Return values
static

prepareRules()

Merge the default common and the specific method's rules.

public prepareRules([string|null $method = null ]) : array<string|int, mixed>

You can overrides this method to prepare the validator rules with a specific router method and strategy.

Parameters
$method : string|null = null

The specific rule type to override the default rules definitions.

Return values
array<string|int, mixed>

response()

Return a response in the format accepted by the client : JSON by default or CBOR.

public response(ResponseInterface $response[, mixed $data = null ][, int $status = 200 ][, string|null $accept = null ]) : ResponseInterface

Checks the Accept header in the request to determine the preferred format.

Parameters
$response : ResponseInterface

PSR-7 Response object to write to.

$data : mixed = null

Data to send in the response.

$status : int = 200

HTTP status code (default: 200).

$accept : string|null = null

The header accepted by the client : 'application/cbor' or by default 'application/json'

Tags
see
FileMimeType::JSON
FileMimeType::CBOR
FileMimeType::CBOR_SEQ
Return values
ResponseInterface

status()

Outputs a generic HTTP status message in a JSON response.

public status(ServerRequestInterface|null $request, ResponseInterface|null $response[, mixed $message = Char::EMPTY ][, int|string|null $code = 200 ][, array<string|int, mixed>|null $options = null ][, string|null $accept = null ]) : ResponseInterface|null
Parameters
$request : ServerRequestInterface|null

Optional PSR-7 Request object.

$response : ResponseInterface|null

PSR-7 Response object to send output.

$message : mixed = Char::EMPTY

The message content.

$code : int|string|null = 200

The HTTP status code (default: 200).

$options : array<string|int, mixed>|null = null

Optional array of additional output properties.

$accept : string|null = null

The header accepted by the client : 'application/cbor' or by default 'application/json'

Tags
example
return $this->status($response, 'bad request', 405);
Return values
ResponseInterface|null

Returns a PSR-7 Response object with JSON content or null if $response is not provided.

success()

Outputs a success message with optional JSON metadata.

public success(ServerRequestInterface|null $request, ResponseInterface|null $response[, mixed $data = null ][, array<string|int, mixed>|null $init = null ][, string|null $accept = null ]) : mixed

If $response is null, returns the $data directly. Supports optional initialization properties like count, limit, offset, owner, URL, status, total, position, options.

Parameters
$request : ServerRequestInterface|null

Optional PSR-7 Request object.

$response : ResponseInterface|null

Optional PSR-7 Response object.

$data : mixed = null

The main payload or data to return.

$init : array<string|int, mixed>|null = null

Optional associative array with keys:

  • count (int): Number of elements
  • limit (int): Pagination limit
  • offset (int): Pagination offset
  • params (array): Parameters for getCurrentPath()
  • status (int): HTTP status code
  • total (int): Total elements
  • url (string): URL to include in response
  • owner (array|object): Owner reference
  • options (array): Additional properties
  • position (int): Optional position in list
$accept : string|null = null

The header accepted by the client : 'application/cbor' or by default 'application/json'

Tags
example
return $this->success(
    $request,
    $response,
    $data,
    [Output::COUNT => count($data), Output::PARAMS => $request->getQueryParams()]
);
Return values
mixed

Returns a PSR-7 Response object with JSON if $response is provided, otherwise returns $data directly.

successWithNewBody()

Same as {@see self::success()} but guarantees a fresh response body stream before writing the envelope.

public successWithNewBody(ServerRequestInterface|null $request, ResponseInterface|null $response[, mixed $data = null ][, array<string|int, mixed>|null $init = null ][, string|null $accept = null ]) : mixed

Use this only when an upstream actor (typically a sub-controller called from the current controller method) may have already written into the shared PSR-7 body stream. Calling the plain success() in that case would concatenate two JSON envelopes — invalid JSON for any strict parser (NextJS RSC, modern fetch, etc.).

Implementation: swaps the response body for an empty stream via self::withFreshBody(), then delegates to success(). Whatever was previously written is discarded; the resulting body contains exactly one envelope.

Parameters
$request : ServerRequestInterface|null

Optional PSR-7 Request object.

$response : ResponseInterface|null

Optional PSR-7 Response object.

$data : mixed = null

The main payload or data to return.

$init : array<string|int, mixed>|null = null

Same keys as success().

$accept : string|null = null

The header accepted by the client.

Tags
example
// POST /users where dispatchAutoInvitation() writes into the shared body
public function post( ?Request $request , ?Response $response , array $args , array $init ) :mixed
{
    $result = parent::post( $request , $response , $args , $init ) ;
    $this->dispatchAutoInvitation( $request , $response , $userKey ) ;

    return $this->successWithNewBody
    (
        $request ,
        $result  ,
        $this->refetchHydratedUser( $userKey )
    ) ;
}
see
success()

Plain variant when the body has not been touched.

Return values
mixed

Same return contract as success().

withFreshBody()

Returns the same response with a fresh, empty body stream.

public withFreshBody(ResponseInterface|null $response) : ResponseInterface|null

Use to discard whatever an upstream actor (sub-controller, middleware) may have already written, then chain into any other response helper.

Parameters
$response : ResponseInterface|null

Optional PSR-7 Response object.

Tags
example
return $this->fail( $request , $this->withFreshBody( $response ) , 502 , 'zitadel_sync_failed' ) ;
Return values
ResponseInterface|null

The same response with a fresh empty body, or null if $response was null.

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