Why message is not being added to flashMessanger? - php

Question

I created pagination and wanted to add check if user want to access page, which is not exisits. For example, there are 10 pages and user wants to open 999 page. I wanted to add error message, which will show, that there are no 999 page.
I tried this (and this worked):
public function listAction() {
$page = // getting page
$pagginator = // setting paginator
// this part will add message to the flashMessanger
if($page > $paginator->count()) {
$message = 'There are no such page';
$this->flashMessenger()->addMessage($message);
return $this->redirect()->toRoute('zfcadmin/news');
}
return new ViewModel(array(
'news' => $paginator,
));
}
This is working code. This is code for list action. This action is executed, when I type in browser this: example.com/admin/news. If I will type example.com/admin/news/page-500 browser will be redirected to example.com/admin/news and there will be message There are no such page.
I wanted to add same in other parts of my site and I got problem in index action of same controller. This is index action:
public function indexAction() {
return new ViewModel(array(
'news' => $this->getItems(),
'categoryName' => null,
));
}
As you see, I call function getItems(). Code of this function:
private function getItems($categoryId = null) {
$page = // getting page
$paginator = // getting paginator
if($page > $paginator->count()) {
$message = 'There are no such page';
$this->flashMessenger()->addMessage($message);
if($categoryId) {
return $this->redirect()->toRoute('news/category', array('category' => $categoryId));
} else {
return $this->redirect()->toRoute('news');
}
}
return $paginator;
}
I tried this and I got this error:
Fatal error: Call to undefined method
Zend\Http\PhpEnvironment\Response::count() in
F:\Server\domains\zf2-skeleton\module\News\view\news\news\index.phtml
on line 32
I realized, that it is because I returning $this->redirect as result of getItems() function and it is assigned to view variable news.
I tried this then:
if($page > $paginator->count()) {
$message = 'There are no such page';
$this->flashMessenger()->addMessage($message);
if($categoryId) {
$this->redirect()->toRoute('news/category', array('category' => $categoryId));
} else {
$this->redirect()->toRoute('news');
}
}
I am not getting any errors, but I am not getting message, that page is bad too.
I think... I bet, nobody here doesn't want to know what I think :)
Help me with this problem, please.
How to make redirect + write message to flashMessanger (so I can output it later) correctly in my case?
Update
I understand, that it is possible to return array from function get items and handle it. One of element will show should zf2 do redirect or not, another will show category id, third will containt paginator by itself, but it is dirty solution (but possible :( ).