Element // Filter- and Validator-callbacks now will get the Element i…

…tself as second parameter.

docs/01 - create elements.md

@@ -71,12 +71,14 @@ print_r($text->errors()); // [ 'error-id' => 'Error message' ]
 ## Adding Validators and Filters
 Validation callbacks can be used to validate the Element value, while Filters are being used to sanitize the Element value.
 
+Validators and Filters receive as first parameter the `$value` and as second parameter the `Element $element` itself to have access to attributes, options, ...
+
 ```php
 use ChriCo\Fields\Element\Element;
 
 $text = (new Element('my-text'))
-    ->withValidator(static function(string $value): ?WP_Error {
-        if(!is_email($value)){
+    ->withValidator(static function($value, Element $element): ?WP_Error {
+        if(!is_string($value) && !is_email($value)){
             return new WP_Error('my-text', __('Please insert a valid E-Mail address', 'your-textdomain'));
         }
         return null;

src/Element/Element.php

@@ -211,7 +211,7 @@ public function withFilter(callable $callable): Element
     public function filter($value)
     {
         if ($this->filter) {
-            $value = ($this->filter)($value);
+            $value = ($this->filter)($value, $this);
         }
 
         return $value;
@@ -235,7 +235,7 @@ public function validate(): bool
 
         $valid = true;
         if ($this->validator) {
-            $error = ($this->validator)($value);
+            $error = ($this->validator)($value, $this);
             if (is_wp_error($error)) {
                 $this->withErrors($error->get_error_messages());
                 $valid = false;