Symfony - undefined variable twig - php

Question

I made a list of items to render from db and in other examples it works just fine, but sometimes in trwos error
Variable "ticket" does not exist.
and I can't figure out what am I doing wrong..
/**
* #Route("/ticket-list", name="purchased_tickets_list")
* #param Request $request
* #return \Symfony\Component\HttpFoundation\Response
*/
public function ticketListAction(Request $request)
{
$query = $this->getDoctrine()
->getRepository('AppBundle:Tickets')
->findAll();
$build['ticket'] = $query;
return $this->render('#AdminTemplates/pages/purchased-tickets-list.html.twig', $build);
}
and in my twig
{% for p in ticket %}
<tbody>
<tr>
<td>{{ p.id }}</td>
<td>{{ p.buyersName }}</td>
<td>{{ p.ticketType }}</td>
<td>{{ p.playName }}</td>
<td>{{ p.theaterName }}</td>
<td>{{ p.time }}</td>
<td>{{ p.date|date("m/d/Y") }}</td>
<td class="text-primary"><td>{{ p.price|date('H:i:s') }}</td>
<td>{{ p.price }}</td>
</tr>
</tbody>
{% endfor %}

Answer 1

You never pass ticket -
see below example of sending var:
Controller file:
return $this->render('category/list.html.twig', ['categories' => $categories]);
twig:
{% for value in categories %}
{# rest of code #}
{% endfor %}
update based on comments:
try this:
Controller
$builds = array('foo' => 'one', 'bar' => 'two');
return $this->render('category/list.html.twig', array('ticket' => $builds));
twig file:
{{ dump(ticket) }}
dump is a var_dump in a really pretty human-readable format. If nothing comes through maybe you're in production mode, in that case try running (after changes) in terminal:
php bin/console cache:clear