Additional Configuration ¶

Yii Twig extension allows you to define your own syntax and bring regular helper classes into templates. Let's review configuration options.

Globals ¶

You can add global helpers or values via the application configuration's globals variable. You can define both Yii helpers and your own variables there:

'globals' => [
    'html' => '\yii\helpers\Html',
    'name' => 'Carsten',
    'GridView' => '\yii\grid\GridView',
],

Once configured, in your template you can use the globals in the following way:

Hello, {{name}}! {{ html.a('Please login', 'site/login') | raw }}.

{{ GridView.widget({'dataProvider' : provider}) | raw }}

Functions ¶

You can define additional functions like the following:

'functions' => [
    'rot13' => 'str_rot13',
    'truncate' => '\yii\helpers\StringHelper::truncate',
    new \Twig_SimpleFunction('rot14', 'str_rot13'),
    new \Twig_SimpleFunction('add_*', function ($symbols, $val) {
        return $val . $symbols;
    }, ['is_safe' => ['html']]),
    'callable_add_*' => function ($symbols, $val) {
        return $val . $symbols;
    },
    'sum' => function ($a, $b) {
        return $a + $b;
    }
],

In template they could be used like the following:

{{ rot13('test') }}
{{ truncate(post.text, 100) }}
{{ rot14('test') }}
{{ add_42('answer') }}
{{ callable_add_42('test') }}
{{ sum(1, 2) }}

Filters ¶

Additional filters may be added via the application configuration's filters option:

'filters' => [
    'jsonEncode' => '\yii\helpers\Json::htmlEncode',
    new \Twig_SimpleFilter('rot13', 'str_rot13'),
    new \Twig_SimpleFilter('add_*', function ($symbols, $val) {
        return $val . $symbols;
    }, ['is_safe' => ['html']]),
    'callable_rot13' => function($string) {
        return str_rot13($string);
    },
    'callable_add_*' => function ($symbols, $val) {
        return $val . $symbols;
    }
],

Then in the template you can apply filter using the following syntax:

{{ model|jsonEncode }}
{{ 'test'|rot13 }}
{{ 'answer'|add_42 }}
{{ 'test'|callable_rot13 }}
{{ 'answer'|callable_add_42 }}