ValidatorTrait uses trait:short, trait:short
Provides helper methods for validation and error handling within a controller.
Trait ValidatorTrait
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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
$validator
The validator reference.
public
Factory
$validator
Methods
addRules()
Register the extra validator's rules.
public
addRules([array<string|int, mixed> $rules = [] ]) : void
Parameters
- $rules : array<string|int, mixed> = []
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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'
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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|nullinitCustomValidationRules()
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> = []
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Return values
staticprepareRules()
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'
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Return values
ResponseInterfacestatus()
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'
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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'
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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
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.
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Return values
ResponseInterface|null —The same response with a fresh empty body,
or null if $response was null.