Olympus Hera Renderer

Olympus Hera Renderer is a bundle used to render all components views through the TWIG template engine.

composer require getolympus/olympus-hera-renderer

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Example

You can easily use the Hera renderer to display TWIG template:

namespace MyCustomPackage;

use GetOlympus\Hera\Hera;

class MyPackage
{
    protected function displayContent()
    {
        /**
         * Sample extracted from the `Metabox` Zeus-Core component.
         * @see https://github.com/GetOlympus/Zeus-Core/blob/master/src/Zeus/Metabox/Metabox.php
         */

        // Prepare admin scripts and styles
        $assets = [
            'scripts' => [],
            'styles'  => [],
        ];

        $vars = [];

        // Display fields
        foreach ($fields as $field) {
            if (!$field) {
                continue;
            }

            // Update scripts and styles
            $fieldassets = $field->assets();

            if (!empty($fieldassets)) {
                $assets['scripts'] = array_merge($assets['scripts'], $fieldassets['scripts']);
                $assets['styles']  = array_merge($assets['styles'], $fieldassets['styles']);
            }

            $vars['fields'][] = $field->prepare('metabox', $post, 'post');
        }

        /**
         * Outside the loop, you'll get an array with these elements:
         *
         * $vars = [
         *     'fields' => [
         *         [
         *             'context' => 'wordpress',
         *             'path' => '/path/to/resources/views',
         *             'template' => 'wordpress.html.twig',
         *             'vars' => [-- vars used in the target template --]
         *         ],
         *         [-- more and more --],
         *     ]
         * ];
         */

        // Render view
        $render = new Hera('core', 'layouts'.S.'metabox.html.twig', $vars, $assets);
        $render->view();
    }
}

Initialization

The Hera component needs to be initialized by this way:

/**
 * Constructor.
 *
 * @param  string  $context
 * @param  string  $template
 * @param  array   $vars
 * @param  array   $assets
 * @param  bool    $usecache
 */
new Hera($context, $template, $vars, $assets, $usecache);

Variable	Type	Default value if not set	Details
context	String	mandatory	Used by the TWIG template engine to retrieve wanted template
template	String	mandatory	TWIG template to load
vars	Array	mandatory	List of vars used in the TWIG loaded template
assets	Array	[]	List of assets files to load to render template
usecache	Boolean	false	Define wether to use or not TWIG engine cache system

Customization

If you need to add your custom TWIG functions, you can use the ol_hera_render_functions action hook:

add_action('ol.hera.render_functions', function ($twig) {
    // Example to use the WordPress `get_header()` function through TWIG: {{ get_header(file) }}
    $twig->addFunction(new \Twig\TwigFunction('get_header', function ($file = '') {
        get_header($file);
    }));
});

Release History

See CHANGELOG.md for all details.

Contributing

1. Fork it (https://github.com/GetOlympus/Hera-Renderer/fork)
2. Create your feature branch (git checkout -b feature/fooBar)
3. Commit your changes (git commit -am 'Add some fooBar')
4. Push to the branch (git push origin feature/fooBar)
5. Create a new Pull Request

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Built with ♥ by Achraf Chouk ~ (c) since a long time.