I made some custom widgets. All is well except that my Form Widget doesn't work on Blog pages (it does work on all other pages).

Error:
popCurrent called on ModelAsController controller, but it wasn't at the top of the stack
POST /websitename/blog/widget/24/FormWidget

Widget Form Code

class FormWidget_Controller extends Widget_Controller {

	function FormWidget() {
		
		return new Form(
			$this, 
			'FormWidget', 
			new FieldSet(
				new EmailField('EmailFormWidget')
			), 
			new FieldSet(
				new FormAction('doFormWidget', 'Submit')
			),
			new RequiredFields('EmailFormWidget')
		);
		
	}
   
  function doFormWidget($data, $form) {

		//Set data
		$from = $data['EmailFormWidget'];
		$to = 'example@example.com';
		$subject = "this is the subject";   
		$body = '<h1>Email Signup List</h1><p><b>Email Address</b> - '.$data['EmailFormWidget'].'</p>';  
		$email = new Email($from, $to, $subject, $body);
		$email->send();
		Director::redirect(Director::get_current_page()->Link() . "?success=1");
	}
	
	// Allows us to show different content in template "if Success"
	public function SuccessFormWidget() {
		return isset($_REQUEST['success']) && $_REQUEST['success'] == "1";
	}
}

Thank you

I have the same issue. I know it is an old post, but did you find a solution for this?

Thanks in advance
Matze

I know this is old but recently built a blog search widget in SS 2.4, which turned into a real nightmare. So if anyone else has to work with an old ss install heres what I did. With some search specific code removed, it was ripped & modified code from MySQLDatabase->searchEngine()

• Create a custom widget which returns a from from a custom controller
  
• Create custom controller which has a form function and a results view or action
  
• Create a form with its action set to the custom controller
  
• Pretty print, pipe the nice url to the custom controller to avoid controller names appearing in the url
  

class BlogSearchWidget extends Widget {
	
	static $cmsTitle = "Blog Search";
	static $description = "Limits search results to Blog pages only.";
	
	public function Title() {
		return "Search Blog";
	}
	
	public function SearchForm() {
                // return the from from a custom controller
		$formController = new BlogSearch_Controller();
		return $formController->search();
	}

}

class BlogSearch_Controller extends ContentController {

	static $allowed_actions = array(
		'search',
	);

	public function index() {
                 // render search results
        }
	
	function search() {
		return new BlogSearchForm($this, 'blogsearch');
	}

}

class BlogSearchForm extends Form {
 
   function __construct($controller, $name) {
	   
		$fields = new FieldSet(
			new TextField('query', 'Search')
		);

		$actions = new FieldSet(
			new FormAction('submit', '>> Start Search ')
		);
		
		$this->setFormMethod('get');
		$this->disableSecurityToken();
		$this->setFormAction('blogsearch');
		parent::__construct($controller, $name, $fields, $actions);
		
	}
     
   function forTemplate() {
		return $this->renderWith(array(
					$this->class,
					'Form'
		));
	}
	
}

Director::addRules(50, array(
	'blogsearch' => 'BlogSearch_Controller'
	)
);