Twig 覆盖bolt.cms中的后端模板

我试图覆盖位于

供应商/bolt/bolt/app/view/twig/editcontent/fields/\u block.twig中的模板文件（我想替换“块选择”下拉列表）。关于、和，这在默认情况下不受支持，因此我必须为此编写扩展。所以我试了一下：

后端块选择扩展：

namespace Bundle\Site;

use Bolt\Filesystem\Adapter\Local;
use Bolt\Filesystem\Filesystem;
use Silex\Application;
use Bolt\Extension\SimpleExtension;

class BackendBlockSelectionExtension extends SimpleExtension
{
    public function getServiceProviders()
    {
        return [
            $this,
            new BackendBlockSelectionProvider(),
        ];
    }
}

namespace Bundle\Site;

use Bolt\Filesystem\Adapter\Local;
use Bolt\Filesystem\Filesystem;
use Silex\Application;
use Silex\ServiceProviderInterface;

class BackendBlockSelectionProvider implements ServiceProviderInterface
{
    public function register(Application $app)
    {
        $side = $app['config']->getWhichEnd();

        if ($side == 'backend') {
            $path       = __DIR__ . '/App/templates/Backend';
            $filesystem = $app['filesystem'];

            $filesystem->mountFilesystem('bolt', new Filesystem(new Local($path)));

            $app['twig.loader.bolt_filesystem'] = $app->share(
                $app->extend(
                    'twig.loader.bolt_filesystem',
                    function ($filesystem, $app) {
                        $path = __DIR__ . 'src/App/templates/Backend/';

                        $filesystem->prependPath($path, 'bolt');

                        return $filesystem;
                    }
                )
            );
        }
    }

    public function boot(Application $app)
    {
    }
}

后端块选择提供程序：

namespace Bundle\Site;

use Bolt\Filesystem\Adapter\Local;
use Bolt\Filesystem\Filesystem;
use Silex\Application;
use Bolt\Extension\SimpleExtension;

class BackendBlockSelectionExtension extends SimpleExtension
{
    public function getServiceProviders()
    {
        return [
            $this,
            new BackendBlockSelectionProvider(),
        ];
    }
}

namespace Bundle\Site;

use Bolt\Filesystem\Adapter\Local;
use Bolt\Filesystem\Filesystem;
use Silex\Application;
use Silex\ServiceProviderInterface;

class BackendBlockSelectionProvider implements ServiceProviderInterface
{
    public function register(Application $app)
    {
        $side = $app['config']->getWhichEnd();

        if ($side == 'backend') {
            $path       = __DIR__ . '/App/templates/Backend';
            $filesystem = $app['filesystem'];

            $filesystem->mountFilesystem('bolt', new Filesystem(new Local($path)));

            $app['twig.loader.bolt_filesystem'] = $app->share(
                $app->extend(
                    'twig.loader.bolt_filesystem',
                    function ($filesystem, $app) {
                        $path = __DIR__ . 'src/App/templates/Backend/';

                        $filesystem->prependPath($path, 'bolt');

                        return $filesystem;
                    }
                )
            );
        }
    }

    public function boot(Application $app)
    {
    }
}

这似乎可以完成任务，但我遇到了一个我完全不理解的错误：
the“bolt://app/theme_defaults“目录不存在。


因此，我的最后一个问题是：有没有人有一些示例代码如何在不接触
供应商
文件夹的情况下覆盖/修改
供应商/bolt/bolt/app/view/twig/editcontent/fields/_block.twig

在扩展类中，覆盖受保护的函数registerTwigPaths（）

函数如下：

protected function registerTwigPaths()
{
    if ($this->getEnd() == 'backend') {
        return [
            'view' => ['position' => 'prepend', 'namespace' => 'bolt']
        ];
    }
    return [];
}

private function getEnd()
{
    $backendPrefix = $this->container['config']->get('general/branding/path');
    $end = $this->container['config']->getWhichEnd();

    switch ($end) {
        case 'backend':
            return 'backend';
        case 'async':
            // we have async request
            // if the request begin with "/admin" (general/branding/path)
            // it has been made on backend else somewhere else
            $url = '/' . ltrim($_SERVER['REQUEST_URI'], $this->container['paths']['root']);
            $adminUrl = '/' . trim($backendPrefix, '/');
            if (strpos($url, $adminUrl) === 0) {
                return 'backend';
            }
        default:
            return $end;
    }
}

---

现在，您可以在extensions目录中创建一个视图目录，在该目录中，您可以像Bolt的默认值一样在结构中定义模板。我将从复制和覆盖开始。

谢谢。经过一番努力，一切都如期进行。最后的路径是：

extensions/lulubu/pretty block selection/view/editcontent/fields/\u block.twig