I use include() to reuse code. How to reuse code in nette?

Thanks for your help!

I got this code working (my custom class queries the database and presenter renders the title of the post with id 1)

Is it OK to give the custom class access to the database by $titleObject = new CustomClass($this->database); ?

Custom class

<?php

namespace App\Presenters;

class CustomClass
{
    private $database;

    public function __construct($database)
    {
        $this->database = $database;

    }//end mtd

    public function returnTitle()
    {
        $title = $this->database->table("posts")
                ->where("id = ?", 1);

        return $title;

    }//end mtd

}//end class

Presenter

<?php

namespace App\Presenters;

use Nette;

class TitlePresenter extends BasePresenter
{
    private $database;

    public function __construct(Nette\Database\Context $database)
    {
        $this->database = $database;
    }//end mtd

    public function renderDefault()
    {
        $titleObject = new CustomClass($this->database);
        $this->template->title = $titleObject->returnTitle();
    }//end mtd

}//end class

Latte

{block}
    {foreach $title as $row}
        {$row->title}
    {/foreach}
{/block}

Last edited by netteman (2016-05-08 17:20)

I didn't choose registering a service but does this use dependency injection?

TitleClass.php (service?)

<?php
//this class(service) queries the database
namespace App\Presenters;

use Nette;

class Title
{
    private $connection;

    function __construct(Nette\Database\Connection $connection)
    {
        $this->connection = $connection;
    }//end mtd


    function returnTitle(){

        return $this->connection->query("SELECT title FROM posts WHERE id = ?", 1);

    }//end mtd

}//end class

ContainerClass.php (Container?)

<?php
//this class(container) returns an object and takes care of the dependencies
namespace App\Presenters;

use Nette;

class Container
{
    function createConnection()
    {
        return new Nette\Database\Connection('mysql:host=127.0.0.1;dbname=quickstart', 'root', '');
    }//end mtd

    function createTitle()
    {
        return new Title($this->createConnection());
    }//end mtd

}//end class

PresenterTitle.php

<?php
//this class(presenter) creates an object(container) which creates another object(service) that can returnTitle to the presenter
namespace App\Presenters;

class TitlePresenter extends BasePresenter
{
    public function renderDefault()
    {
        $container = new Container;
        $title = $container->createTitle();
        $this->template->result = $title->returnTitle();
    }//end mtd

}//end class

The code is working. Did I get the terminology right?

Last edited by netteman (2016-05-10 20:34)

CZechBoY wrote:

Container creates the presenter so you dont create container in presenter.

Really? I thought the hierarchy is following: http://oi66.tinypic.com/w15pc8.jpg

Ah, so the order of commands I write can be presenter → container → service but the inner workings of Nette are a bit different.

Thanks, man :)

He is not using Nette\DI\Container, but he created his own. @netteman you can benefit of Nette container instead of creating your own.