<?php

class MyModel extends Nette\Object
{

    /** @var DibiConnection */
    private $db;

    public function __construct(DibiConnection $db)
    {
        $this->db;
    }

    public function find()
    {
        $this->db->query('select * from ...');
        // ...
    }

}



// v configu
services:
    my:
        class: MyModel
        arguments: [@connection]

// nebo v presenteru
$this->model = new MyModel($this->context->connection);