symfony2
Symfony Twig Extensions

A Simple Twig Extension - Symfony 2.8

Controleer voordat u een extensie maakt of deze al is geïmplementeerd .

Het eerste wat je zou moeten doen is de extensieklasse definiëren die de takfilters en / of functies herbergt.

<?php

namespace AppBundle\Twig;

class DemoExtension extends \Twig_Extension {
    /**
     * A unique identifier for your application
     * 
     * @return  string
     */
    public function getName()
    {
        return 'demo';
    }

    /**
     * This is where one defines the filters one would to use in their twig 
     * templates
     * 
     * @return  Array
     */
    public function getFilters()
    {
        return array (
            new \Twig_SimpleFilter (
                'price',                      // The name of the twig filter
                array($this, 'priceFilter')   
            ),
        );
    }

    public function priceFilter($number, $decimals = 0, $decPoint = '.', $thousandsSep = ',')
    {
        return '$' . number_format($number, $decimals, $decPoint, $thousandsSep);
    }

    /**
     * Define the functions one would like availed in their twig template
     * 
     * @return  Array
     */
    public function getFunctions() {
        return array (
            new \Twig_SimpleFunction (
                'lipsum',                      // The name of the twig function
                array($this, 'loremIpsum')   
            )
        );
    }

    public function loremIpsum($length=30) {
        $string = array ();
        $words = array (
            'lorem',        'ipsum',       'dolor',        'sit',
            'amet',         'consectetur', 'adipiscing',   'elit',
            'a',            'ac',          'accumsan',     'ad',
            'aenean',       'aliquam',     'aliquet',      'ante',
            'aptent',       'arcu',        'at',           'auctor',
            'augue',        'bibendum',    'blandit',      'class',
            'commodo',      'condimentum', 'congue',       'consequat',
            'conubia',      'convallis',   'cras',         'cubilia',
            'cum',          'curabitur',   'curae',        'cursus',
            'dapibus',      'diam',        'dictum',       'dictumst',
            'dignissim',    'dis',         'donec',        'dui',
            'duis',         'egestas',     'eget',         'eleifend',
            'elementum',    'enim',        'erat',         'eros',
            'est',          'et',          'etiam',        'eu',
            'euismod',      'facilisi',    'facilisis',    'fames',
            'faucibus',     'felis',       'fermentum',    'feugiat',
            'fringilla',    'fusce',       'gravida',      'habitant',
            'habitasse',    'hac',         'hendrerit',    'himenaeos',
            'iaculis',      'id',          'imperdiet',    'in',
            'inceptos',     'integer',     'interdum',     'justo',
            'lacinia',      'lacus',       'laoreet',      'lectus',
            'leo',          'libero',      'ligula',       'litora',
            'lobortis',     'luctus',      'maecenas',     'magna',
            'magnis',       'malesuada',   'massa',        'mattis',
            'mauris',       'metus',       'mi',           'molestie'
        );

        for ( $i=0; $i<$length; $i++ )
            $string[] = $words[rand(0, 99)];

        return implode(" ", $string);
    }
}

Men waarschuwt vervolgens de servicecontainer van de nieuw gemaakte tak-extensie.

# app/config/services.yml
services:
    app.twig.demo_extension:
        class: AppBundle\Twig\DemoExtension
        tags:
            - { name: twig.extension }

Hiermee heb je alles wat je nodig hebt om je nieuw gemaakte takjesfilter of functie in je takjesjablonen te kunnen gebruiken

<p>Price Filter test {{ '5500' | price }}</p>
<p>{{ lipsum(25) }}</p>

Maak een getal kort, bijvoorbeeld 1 000 -> 1 k, 1 000 000 -> 1 miljoen enz.

Symfony 2.8

# AppBundle\Twig\AppExtension.php
<?php
namespace AppBundle\Twig;

class AppExtension extends \Twig_Extension
{
    /**
     * This is where one defines the filters one would to use in their twig 
     * templates
     * 
     * @return  Array
     */
    public function getFilters()
    {
        return array(
            new \Twig_SimpleFilter('shortNumber', array($this, 'shortNumber')),
        );
    }

    /**
     * Shorten the number
     * 
     * @param integer
     * @return string
     */
    public function shortNumber($number)
    {
        $k   = pow(10,3);
        $mil = pow(10,6);
        $bil = pow(10,9);

        if ($number >= $bil)
            return number_format((float)$number / $bil, 1, '.', '').'Billion';
        else if ($number >= $mil)
            return number_format((float)$number / $mil, 1, '.', '').'M';
        else if ($number >= $k)
            return number_format((float)$number / $k, 1, '.', '').'K';
        else
            return (int) $number;
    }

    /**
     * Get name
     */
    public function getName()
    {
        return 'app_extension';
    }
}

Voeg uw extensie toe aan services.yml

# app/config/services.yml
services:
    app.twig_extension:
        class: AppBundle\Twig\AppExtension
        public: false
        tags:
            - { name: twig.extension }

Gebruik het in TWIG

<span>{{ number|shortNumber }}</span>
e.g.
<span>{{ 1234|shortNumber }}</span> -> <span>1.2k</span>