PHP code example of brain / context

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

brain / context example snippets

use Brain\Context;

class HomepageContext implements Context\ProviderFactory
{
    public function create(\WP_Query $query, LoggerInterface $logger): ?Provider
    {
        return Context\Provider\ArrayMerge::new(fn() => $query->is_front_page())
            ->addProvider(new MyHeroProvider())
            ->addProvider(new Context\Provider\Posts(['posts_per_page' => 5], 'latest_posts'));
    }
}

class SingularContext implements Context\ProviderFactory
{
    public function create(\WP_Query $query, LoggerInterface $logger): ?Provider
    {
        return Context\Provider\ArrayMerge::new(fn() => $query->is_singular())
            ->addProvider(new Context\Provider\ByCallback(fn() => ['post' => $query->post]))
            ->addProvider(new Context\Provider\Comments(['post_id' => $query->post->ID]));
    }
}

namespace MyTheme;

use Brain\Context;

add_action('template_redirect', function () {
    
    $context = Context\Context::new()
        ->withProviderFactory(new HomepageContext())
        ->withProviderFactory(new SingularContext())
        ->provide();
        
    // pass context to templates here ...
});

namespace MyTheme;

use Brain\Context;

add_action('brain.context.providers', function (Context\Context $context) {
    $context
        ->withProviderFactory(new HomepageContext())
        ->withProviderFactory(new SingularContext());
});

add_action('template_redirect', function () {
    $context = Context\Context::new()->provide();
    // pass context to templates here ...
});

namespace My\Theme;

use Brain\Hierarchy\{Finder, Loader, QueryTemplate};
use Brain\Context;

class MustacheTemplateLoader implements Loader\Loader
{
   private $engine;

   public function __construct(\Mustache_Engine $engine)
   {
      $this->engine = $engine;
   }

   public function load(string $templatePath): string
   {
        // It will be possible to hook 'brain.context.providers' to add context providers
        $data = Context\Context::new()
            ->convertEntitiesToPlainObjects()
            ->forwardGlobals()
            ->provide();

        return $this->engine->render(file_get_contents($templatePath), $data);
   }
}

add_action('template_redirect', function() {
    if (!QueryTemplate::mainQueryTemplateAllowed()) {
        return;
    }

    $queryTemplate = new QueryTemplate(
        new Finder\BySubfolder('templates', 'mustache'),
        new MustacheTemplateLoader(new \Mustache_Engine())
    );

    $content = $queryTemplate->loadTemplate(null, true, $found);
    $found and die($content);
});

public function provide(\WP_Query $query, LoggerInterface $logger): ?array;

add_action('brain.context.logger', function (callable $setter) {
    $setter(new MyPsr3Logger());
});