Group by object field - php

Question

Now i hav this. How do I group by the field hotel.name?
And yes, I saw this post, but it does not work.
Twig Loop Grouping
{% for item in pagination.items %} <!-- Вывод результатов по отелям -->
<div class="row">
<div class="col-lg-1">{{ loop.index }}</div>
<div class="col-lg-6">
<span class="text-capitalize">{{ item.hotel.name }}</span>
<span class="text-primary">{{ item.roomName }}</span>
{% if(item.mealName) %}
<span class="text-muted">({{ item.mealName }})</span>
{% endif %}
</div>
<div class="col-lg-2">{{ item.price }} {{ item.currency }}</div>
</div>
{% endfor %}
I need get this:
We were advised to use the groop_by, but I do not understand how.
{% for item,
group in pagination|group_by(=>_.hotel.name)
%} <!-- Вывод результатов по отелям -->
<div class="row">
<div class="col-lg-1">{{ loop.index }}</div>
<div class="col-lg-6">
<span class="text-capitalize">{{ item.hotel.name }}</span>
<span class="text-primary">{{ item.roomName }}</span>
{% if(item.mealName) %}
<span class="text-muted">({{ item.mealName }})</span>
{% endif %}
</div>
<div class="col-lg-2">{{ item.price }} {{ item.currency }}</div>
</div>
{% endfor %}
Controller:
public function resultsAction($searchId, $page)
{
$em = $this->getDoctrine()->getManager();
$objSearchRequest = $em->find('UtsHotelBundle:SearchRequest', $searchId);
if(!$objSearchRequest){
$this->createNotFoundException();
}
$objSearchForm = $this->createForm('uts_hotel_search_request', $objSearchRequest);
$templateVars = array(
'searchForm' => $objSearchForm->createView(),
'request' => $objSearchRequest
);
if($objSearchRequest->isComplete() || $objSearchRequest->isOld()){
$repository = $em->getRepository('UtsHotelBundle:SearchResult');
$query = $repository->createQueryForPagination($searchId);
$paginator = $this->get('knp_paginator');
$pagination = $paginator->paginate($query, $page, 50);
$templateVars['pagination'] = $pagination;
}
return $this->render('UtsHotelBundle:Default:results.html.twig', $templateVars);
}

Answer 1

Answer:
{% set date = null %}
{% set otelindex=0 %}
{% for item in pagination.items %} <!-- Вывод результатов по отелям -->
{% if date != item.hotel.name %}
{% set date = item.hotel.name %}
{% set otelindex=otelindex+1 %}
<div class="row">
<div class="col-lg-6">
<h4>{{ otelindex }}{{ ". " }}{{item.hotel.name}}</h4>
</div>
<div class="col-lg-2">
<h4> {{ item.mealName }}{{ item.price }} {{ item.currency }}</h4>
</div>
</div>
{% endif %}
<div class="row">
<div class="col-lg-6">
<span class="text-primary">{{ item.roomName }}</span>
{% if(item.mealName) %}
<span class="text-muted">({{ item.mealName }})</span>
{% endif %}
</div>
<div class="col-lg-2">{{ item.price }} {{ item.currency }}</div>
</div>
{% endfor %}