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How to call a method of class in Volt

Hi all

I have a question, I suppose a libray is VoltFunctions

<?php

namespace Zphalcon\Tools;

/**
 * PHP Functions in Volt
 */
class VoltFunctions
{

    /**
     * Compile any function call in a template
     *
     * @param string $name function name
     * @param mixed $arguments function args
     *
     * @return string compiled function
     */
    public function compileFunction($name, $arguments)
    {
        if (function_exists($name)) {
            return $name . '(' . $arguments . ')';
        }

        if ($name == 'dump') {
            return '\Phalcon\Debug\Dump::all(' . $arguments . ')';
        }
    }

    /**
     * Compile some filters
     *
     * @package     las
     * @version     1.0
     *
     * @param string $name filter name
     * @param mixed $arguments filter args
     *
     * @return string compiled filter
     */
    public function compileFilter($name, $arguments)
    {
        if ($name == 'isset') {
            return '(isset(' . $arguments . ') ? ' . $arguments . ' : null)';
        }
        if ($name == 'long2ip') {
            return 'long2ip(' . $arguments . ')';
        }
    }

    /**
     * Get either a Gravatar URL or complete image tag for a specified email address.
     *
     * @param string $email The email address
     * @param string $s Size in pixels, defaults to 80px [ 1 - 2048 ]
     * @param string $d Default imageset to use [ 404 | mm | identicon | monsterid | wavatar ]
     * @param string $r Maximum rating (inclusive) [ g | pg | r | x ]
     * @param boole $img True to return a complete IMG tag False for just the URL
     * @param array $atts Optional, additional key/value attributes to include in the IMG tag
     * @return String containing either just a URL or a complete image tag
     */
    public  function getAvatar($email ,$s = 80, $d = 'mm', $r = 'g', $img = false, $atts = array())
    {
        /*$path = '/images/u/' . $this->getId() . '-thumb.jpg';
        if (file_exists(PUBLIC_DIR.$path)) {
            return $path;
        }*/
        $url = 'https://www.gravatar.com/avatar/';
        $url .= md5( strtolower( trim( $email ) ) );
        $url .= "?s=$s&d=$d&r=$r";
        if ( $img ) {
            $url = '<img src="' . $url . '"';
            foreach ( $atts as $key => $val )
                $url .= ' ' . $key . '="' . $val . '"';
            $url .= ' />';
        }
        return $url;
    }

}

And in file service I have defined it below:

 //  Setting up the view component
        $di->set(
            'view',
            function () use ($config) {
                $view = new View();
                $view->setViewsDir($config->application->view->viewsDir);
                $view->disableLevel([View::LEVEL_MAIN_LAYOUT => true, View::LEVEL_LAYOUT => true]);
                //@TODO: move to an extensions/filters/functions file.
                $view->registerEngines(
                    [
                        '.volt' => function () use ($view, $config) {
                                $volt = new Volt($view);
                                $volt->setOptions(
                                    [
                                        'compiledPath'      => $config->application->view->compiledPath,
                                        'compiledSeparator' => $config->application->view->compiledSeparator,
                                        'compiledExtension' => $config->application->view->compiledExtension,
                                        'compileAlways'     => $config->application->debug,
                                    ]
                                );
                                $compiler = $volt->getCompiler();
                                $compiler->addExtension(new Zphalcon\Tools\VoltFunctions());
                                $compiler->addFunction(
                                    't',
                                    function ($string) {
                                        return t($string);
                                    }
                                );
                                $compiler->addFunction('array_key_exists', 'array_key_exists');
                                $compiler->addFilter(
                                    'truncate',
                                    function ($str, $maxLen = 35, $suffix = '...') {
                                        return 'Zphalcon\Models\Tools::truncate(' . $str . ')';
                                    }
                                );
                                $compiler->addFunction(
                                    'urls',
                                    function ($email) {
                                        return 'Zphalcon\Tools\VoltFunctions::abc(' .$email. ')';
                                    }
                                );
                                return $volt;
                        }
                    ]
                );
                return $view;
            }
        );

As you see document here https://docs.phalcon.io/en/latest/reference/volt.html#extensions

How to call method getAvatar of class VoltFunction in volt ?



33.8k

Unless you use an instance for invoking the method, you'll have to do the same as me (and you): creating a Volt function per class method.

That's the only thing worked for me time ago.

// What I don't remember is that maybe you've to declare it static...
// '$resolvedArgs' is a string that contains all the params used calling the function in a Volt template.

$compiler->addFunction('getAvatar', function ($resolvedArgs) {
    return ('Zphalcon\Tools\VoltFunctions::getAvatar(' . $resolvedArgs . ')');
});


58.3k

Yes, I know add a function this is working, but some time we have many function , I don't add in file service.php, I mean move to an extensions/filters/functions a file VoltFunction.php, Then in service call it



58.3k
Accepted
answer

Ok,

I have just solve it, just create Class, then in method compileFunction add it, for example

public function compileFunction($name, $arguments)
    {

        if (function_exists($name)) {
            return $name . '(' . $arguments . ')';
        }

        if ($name == 'dump') {
            return '\Phalcon\Debug\Dump::all(' . $arguments . ')';
        }

        if ($name == 'getAvatar') {
            //return $arguments;
            $a = self::getAvatar($arguments);
           return '\Zphalcon\Tools\ZFunction::getAvatar('. $arguments .')';
        }
        //echo "<pre>";
        //var_dump(__FUNCTION__);
        //var_dump($name, $arguments);
    }

Here we have defined a class ZFunction with method static is getAvatar