fix: ValidationInterface

phpstan-baseline.neon.dist

@@ -635,11 +635,6 @@ parameters:
 			count: 1
 			path: system/Throttle/Throttler.php
 
-		-
-			message: "#^Variable \\$error on left side of \\?\\? always exists and is always null\\.$#"
-			count: 1
-			path: system/Validation/Validation.php
-
 		-
 			message: "#^Property CodeIgniter\\\\View\\\\Cell\\:\\:\\$cache \\(CodeIgniter\\\\Cache\\\\CacheInterface\\) in empty\\(\\) is not falsy\\.$#"
 			count: 2

system/BaseModel.php

@@ -19,7 +19,6 @@
 use CodeIgniter\Exceptions\ModelException;
 use CodeIgniter\I18n\Time;
 use CodeIgniter\Pager\Pager;
-use CodeIgniter\Validation\Validation;
 use CodeIgniter\Validation\ValidationInterface;
 use Config\Services;
 use InvalidArgumentException;
@@ -198,7 +197,7 @@ abstract class BaseModel
     /**
      * Our validator instance.
      *
-     * @var Validation
+     * @var ValidationInterface
      */
     protected $validation;
 
@@ -326,7 +325,7 @@ public function __construct(?ValidationInterface $validation = null)
         $this->tempAllowCallbacks = $this->allowCallbacks;
 
         /**
-         * @var Validation|null $validation
+         * @var ValidationInterface|null $validation
          */
         $validation ??= Services::validation(null, false);
         $this->validation = $validation;

system/Config/BaseService.php

@@ -49,7 +49,7 @@
 use CodeIgniter\Session\Session;
 use CodeIgniter\Throttle\Throttler;
 use CodeIgniter\Typography\Typography;
-use CodeIgniter\Validation\Validation;
+use CodeIgniter\Validation\ValidationInterface;
 use CodeIgniter\View\Cell;
 use CodeIgniter\View\Parser;
 use CodeIgniter\View\RendererInterface;
@@ -127,7 +127,7 @@
  * @method static Toolbar                    toolbar(ConfigToolbar $config = null, $getShared = true)
  * @method static Typography                 typography($getShared = true)
  * @method static URI                        uri($uri = null, $getShared = true)
- * @method static Validation                 validation(ConfigValidation $config = null, $getShared = true)
+ * @method static ValidationInterface        validation(ConfigValidation $config = null, $getShared = true)
  * @method static Cell                       viewcell($getShared = true)
  */
 class BaseService

system/Config/Services.php

@@ -54,6 +54,7 @@
 use CodeIgniter\Throttle\Throttler;
 use CodeIgniter\Typography\Typography;
 use CodeIgniter\Validation\Validation;
+use CodeIgniter\Validation\ValidationInterface;
 use CodeIgniter\View\Cell;
 use CodeIgniter\View\Parser;
 use CodeIgniter\View\RendererInterface;
@@ -733,7 +734,7 @@ public static function uri(?string $uri = null, bool $getShared = true)
     /**
      * The Validation class provides tools for validating input data.
      *
-     * @return Validation
+     * @return ValidationInterface
      */
     public static function validation(?ValidationConfig $config = null, bool $getShared = true)
     {

system/Controller.php

@@ -15,7 +15,7 @@
 use CodeIgniter\HTTP\RequestInterface;
 use CodeIgniter\HTTP\ResponseInterface;
 use CodeIgniter\Validation\Exceptions\ValidationException;
-use CodeIgniter\Validation\Validation;
+use CodeIgniter\Validation\ValidationInterface;
 use Config\Services;
 use Psr\Log\LoggerInterface;
 
@@ -62,7 +62,7 @@ class Controller
     /**
      * Once validation has been run, will hold the Validation instance.
      *
-     * @var Validation
+     * @var ValidationInterface
      */
     protected $validator;
 

system/Validation/Validation.php

@@ -331,6 +331,7 @@ protected function processRules(
 
                 $param = ($param === false) ? '' : $param;
 
+                // @phpstan-ignore-next-line $error may be set by rule methods.
                 $this->errors[$field] = $error ?? $this->getErrorMessage(
                     $rule,
                     $field,
@@ -405,7 +406,7 @@ public function withRequest(RequestInterface $request): ValidationInterface
      *
      *    [
      *        'rule' => 'message',
-     *        'rule' => 'message'
+     *        'rule' => 'message',
      *    ]
      *
      * @param array|string $rules
@@ -499,7 +500,7 @@ public function hasRule(string $field): bool
      *
      * @param string $group Group.
      *
-     * @throws InvalidArgumentException If group not found.
+     * @throws ValidationException If group not found.
      *
      * @return string[] Rule group.
      */
@@ -521,7 +522,7 @@ public function getRuleGroup(string $group): array
      *
      * @param string $group Group.
      *
-     * @throws InvalidArgumentException If group not found.
+     * @throws ValidationException If group not found.
      */
     public function setRuleGroup(string $group)
     {
@@ -593,12 +594,14 @@ protected function loadRuleSets()
      * same format used with setRules(). Additionally, check
      * for {group}_errors for an array of custom error messages.
      *
-     * @return array|ValidationException|null
+     * @throws ValidationException
+     *
+     * @return array
      */
     public function loadRuleGroup(?string $group = null)
     {
         if (empty($group)) {
-            return null;
+            return [];
         }
 
         if (! isset($this->config->{$group})) {

system/Validation/ValidationInterface.php

@@ -20,12 +20,13 @@ interface ValidationInterface
 {
     /**
      * Runs the validation process, returning true/false determining whether
-     * or not validation was successful.
+     * validation was successful or not.
      *
-     * @param array  $data  The array of data to validate.
-     * @param string $group The pre-defined group of rules to apply.
+     * @param array|null  $data    The array of data to validate.
+     * @param string|null $group   The predefined group of rules to apply.
+     * @param string|null $dbGroup The database group to use.
      */
-    public function run(?array $data = null, ?string $group = null): bool;
+    public function run(?array $data = null, ?string $group = null, ?string $dbGroup = null): bool;
 
     /**
      * Check; runs the validation process, returning true or false
@@ -45,16 +46,54 @@ public function check($value, string $rule, array $errors = []): bool;
      */
     public function withRequest(RequestInterface $request): ValidationInterface;
 
+    /**
+     * Sets an individual rule and custom error messages for a single field.
+     *
+     * The custom error message should be just the messages that apply to
+     * this field, like so:
+     *
+     *    [
+     *        'rule' => 'message',
+     *        'rule' => 'message',
+     *    ]
+     *
+     * @param array|string $rules
+     *
+     * @return $this
+     */
+    public function setRule(string $field, ?string $label, $rules, array $errors = []);
+
     /**
      * Stores the rules that should be used to validate the items.
      */
     public function setRules(array $rules, array $messages = []): ValidationInterface;
 
+    /**
+     * Returns all of the rules currently defined.
+     */
+    public function getRules(): array;
+
     /**
      * Checks to see if the rule for key $field has been set or not.
      */
     public function hasRule(string $field): bool;
 
+    /**
+     * Get rule group.
+     *
+     * @param string $group Group.
+     *
+     * @return string[] Rule group.
+     */
+    public function getRuleGroup(string $group): array;
+
+    /**
+     * Set rule group.
+     *
+     * @param string $group Group.
+     */
+    public function setRuleGroup(string $group);
+
     /**
      * Returns the error for a specified $field (or empty string if not set).
      */
@@ -83,4 +122,31 @@ public function setError(string $alias, string $error): ValidationInterface;
      * you need to process more than one array.
      */
     public function reset(): ValidationInterface;
+
+    /**
+     * Loads custom rule groups (if set) into the current rules.
+     *
+     * Rules can be pre-defined in Config\Validation and can
+     * be any name, but must all still be an array of the
+     * same format used with setRules(). Additionally, check
+     * for {group}_errors for an array of custom error messages.
+     *
+     * @return array
+     */
+    public function loadRuleGroup(?string $group = null);
+
+    /**
+     * Checks to see if an error exists for the given field.
+     */
+    public function hasError(string $field): bool;
+
+    /**
+     * Returns the rendered HTML of the errors as defined in $template.
+     */
+    public function listErrors(string $template = 'list'): string;
+
+    /**
+     * Displays a single error in formatted HTML as defined in the $template view.
+     */
+    public function showError(string $field, string $template = 'single'): string;
 }

user_guide_src/source/changelogs/v4.3.0.rst

@@ -37,6 +37,35 @@ For example, the Exit code has been changed like the following:
 - If an uncaught ``CastException`` occurs, the Exit code is ``EXIT_CONFIG`` (= ``3``) instead of ``9``.
 - If an uncaught ``DatabaseException`` occurs, the Exit code is ``EXIT_DATABASE`` (= ``8``) instead of ``17``.
 
+Method Signature Changes
+========================
+
+.. _v430_validation_changes:
+
+Validation Changes
+------------------
+
+ValidationInterface
+^^^^^^^^^^^^^^^^^^^
+
+``ValidationInterface`` has been changed to eliminate the mismatch between ``ValidationInterface`` and the ``Validation`` class.
+
+- The third parameter ``$dbGroup`` for ``ValidationInterface::run()`` has been added.
+- The following methods are added to the interface:
+    - ``ValidationInterface::setRule()``
+    - ``ValidationInterface::getRules()``
+    - ``ValidationInterface::getRuleGroup()``
+    - ``ValidationInterface::setRuleGroup()``
+    - ``ValidationInterface::loadRuleGroup()``
+    - ``ValidationInterface::hasError()``
+    - ``ValidationInterface::listErrors()``
+    - ``ValidationInterface::showError()``
+
+Validation
+^^^^^^^^^^
+
+The return value of  ``Validation::loadRuleGroup()`` has been changed ``null`` to ``[]`` when the ``$group`` is empty.
+
 Others
 ------
 

user_guide_src/source/installation/upgrade_430.rst

@@ -74,6 +74,12 @@ If you have code that depends on the bug, you need to change the code.
 Use new Form helpers, :php:func:`validation_errors()`, :php:func:`validation_list_errors()` and :php:func:`validation_show_error()` to display Validation Errors,
 instead of the Validation object.
 
+Validation Changes
+==================
+
+- ``ValidationInterface`` has been changed. Implemented classes should likewise add the methods and the parameters so as not to break LSP. See :ref:`v430_validation_changes` for details.
+- The return value of  ``Validation::loadRuleGroup()`` has been changed ``null`` to ``[]`` when the ``$group`` is empty. Update the code if you depend on the behavior.
+
 .. _upgrade-430-stream-filter:
 
 Capturing STDERR and STDOUT streams in tests