fix: add missing methods in ValidationInterface

Author: kenjis

system/Validation/ValidationInterface.php

@@ -46,16 +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).
      */