Refactor form field rule prefix retrieval method

Author: CodeWithDennis

resources/views/resources/pages/create/can-validate-create-form-data.blade.php

@@ -9,10 +9,10 @@
         ->assertHasFormErrors($errors)
         ->assertNotified();
 })->with([
-    @foreach($getResourceRequiredFormFields() as $key => $field)
+    @foreach($getResourceFormFieldsByRulePrefix('required') as $key => $field)
     '`{{ $key }}` is required' => [['{{ $key }}' => null], ['{{ $key }}' => 'required']],
     @endforeach
-    @foreach($getResourceMaxLengthFormFields() as $key => $field)
-        '`{{ $key }}` is max {{ $field->getMaxLength() }} characters' => [['{{ $key }}' => Illuminate\Support\Str::random({{ $field->getMaxLength() + 1 }})], ['{{ $key }}' => 'max']],
+    @foreach($getResourceFormFieldsByRulePrefix('max') as $key => $field)
+        '`{{ $key }}` is max {{ $getRuleValue($field, 'max') }} characters' => [['{{ $key }}' => Illuminate\Support\Str::random({{ $getRuleValue($field, 'max') + 1 }})], ['{{ $key }}' => 'max']],
     @endforeach
 ]);

src/Concerns/Resources/InteractsWithSchemas.php

@@ -2,6 +2,7 @@
 
 namespace CodeWithDennis\FilamentTests\Concerns\Resources;
 
+use Closure;
 use Filament\Forms\Components\Field;
 use Filament\Infolists\Components\Entry;
 use Filament\Resources\Pages\EditRecord;
@@ -22,18 +23,29 @@ public function getResourceFormFields(): array
         return $this->getResourceForm()->getFlatFields(true);
     }
 
-    public function getResourceRequiredFormFields(): array
+    public function getResourceFormFieldsByRulePrefix(string $prefix): array
     {
         return collect($this->getResourceFormFields())
-            ->filter(fn (Field $field): bool => $field->isRequired())
+            ->filter(
+                fn (Field $field): bool => array_any(
+                    $field->getValidationRules(),
+                    fn (Closure|string $rule): bool => is_string($rule) && str_starts_with($rule, $prefix)
+                )
+            )
             ->all();
     }
 
-    public function getResourceMaxLengthFormFields(): array
+    public function getRuleValue(Field $field, string $ruleName): ?string
     {
-        return collect($this->getResourceFormFields())
-            ->filter(fn (Field $field): bool => method_exists($field, 'getMaxLength') && $field->getMaxLength() !== null)
-            ->all();
+        foreach ($field->getValidationRules() as $rule) {
+            if (is_string($rule) && str_starts_with($rule, $ruleName.':')) {
+                [, $value] = explode(':', $rule, 2);
+
+                return $value;
+            }
+        }
+
+        return null;
     }
 
     public function getResourceFormFieldKeys(): array