- Added some more flexibility to castValue method

src/Method/Context/FormContextCastableInterface.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace Picea\Ui\Method\Context;
+
+interface FormContextCastableInterface
+{
+    public static function instance(mixed $value);
+}

src/Method/FormContext.php

@@ -215,6 +215,14 @@ class FormContext implements FormContextInterface
     protected function castValue(string $property, mixed $value) : mixed
     {
         $cast = fn($e) => match(true) {
+            is_a($e, Context\FormContextCastableInterface::class, true) => $e::instance($value),
+            $e === "array" => (function(array|string $value) use ($property) {
+                if (is_string($value)) {
+                    return json_validate($value) ? json_decode($value, true) ?? [] : throw new \InvalidArgumentException("Field '$property' is awaiting JSON encoded content.");
+                }
+
+                return $value;
+            })($value),
             is_null($value) => null,
             enum_exists($e) => ( $value instanceof \BackedEnum ? $value : $e::tryFrom($value) ) ?? throw new \InvalidArgumentException(sprintf("Field '\$$property' awaiting values : '%s'.", implode("', '", array_map(fn($e) => $e->value, $e::cases())))),
             function_exists($e) => $e($value),
@@ -233,6 +241,9 @@ class FormContext implements FormContextInterface
                 return $cast($type->getName());
             }
         }
+        elseif ($types->isBuiltin()) {
+            return $cast($types->getName());
+        }
 
         return $value;
     }