Throw exception if form has no fields

src/Exceptions/FormHasNoFieldsException.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Aerni\LivewireForms\Exceptions;
+
+use Exception;
+
+class FormHasNoFieldsException extends Exception
+{
+    public function __construct(protected string $handle)
+    {
+        parent::__construct("The form [{$this->handle}] has no fields.");
+    }
+}

src/Livewire/Concerns/WithFields.php

@@ -2,6 +2,7 @@
 
 namespace Aerni\LivewireForms\Livewire\Concerns;
 
+use Aerni\LivewireForms\Exceptions\FormHasNoFieldsException;
 use Aerni\LivewireForms\Fields\Captcha;
 use Aerni\LivewireForms\Fields\Field;
 use Aerni\LivewireForms\Fields\Honeypot;
@@ -45,6 +46,8 @@ protected function fields(): Collection
     {
         $honeypot = Honeypot::make(new StatamicField($this->form->honeypot(), []));
 
+        throw_if($this->form->fields()->isEmpty(), new FormHasNoFieldsException($this->handle));
+
         return $this->form->fields()
             ->map(fn ($field) => $this->makeFieldFromModel($field))
             ->put($honeypot->handle, $honeypot);