zxcms/common/modules/blog/controllers/PostController.php

<?php

namespace common\modules\blog\controllers;

use common\modules\blog\entities\BlogPost;
use common\modules\blog\forms\BlogCommentForm;
use common\modules\blog\forms\BlogPostForm;
use common\modules\blog\helpers\BlogPostHelper;
use common\modules\blog\repositories\read\BlogCategoryReadRepository;
use common\modules\blog\repositories\read\BlogPostReadRepository;
use common\modules\blog\repositories\read\BlogTagReadRepository;
use common\modules\blog\services\BlogCommentService;
use core\entities\Meta;
use frontend\components\FrontendController;
use Yii;
use yii\base\Security;
use yii\data\ActiveDataProvider;
use yii\helpers\FileHelper;
use yii\helpers\Json;
use yii\web\NotFoundHttpException;
use yii\filters\AccessControl;

class PostController extends FrontendController
{
    public $layout = 'blog';

    private $service;
    private $posts;
    private $categories;
    private $tags;

    public function __construct(
        $id,
        $module,
        BlogCommentService $service,
        BlogPostReadRepository $posts,
        BlogCategoryReadRepository $categories,
        BlogTagReadRepository $tags,
        $config = []
    )
    {
        parent::__construct($id, $module, $config);
        $this->service = $service;
        $this->posts = $posts;
        $this->categories = $categories;
        $this->tags = $tags;
    }

	public function behaviors(): array
	{
		return [
			'access' => [
				'class' => AccessControl::class,
				'rules' => [
					[
						'actions' => ['index', 'category', 'tag', 'post', 'preview'],
						'allow' => true,
						//'roles' => ['Blog'],
					],
					[
						'actions' => ['comment'],
						'allow' => true,
						'roles' => ['Comments'],
					],
					[    // all the action are accessible to admin
						'allow' => true,
						'roles' => ['admin'],
					],
				],
			],
		];
	}

	/**
	 * @return string
	 */
    public function actionIndex()
    {
	    /* @var $dataProvider ActiveDataProvider */
        $dataProvider = $this->posts->getAll();
	    $dataProvider->pagination->pageSize = 10;

        return $this->render('index', [
            'dataProvider' => $dataProvider,
        ]);
    }

	/**
	 * @param $id
	 *
	 * @return string
	 * @throws NotFoundHttpException
	 */
    public function actionCategory($id)
    {
	    if (!$category = $this->categories->find($id)) {
		    throw new NotFoundHttpException('The requested page does not exist.');
	    }
        $dataProvider = $this->posts->getAllByCategory($category);

        return $this->render('category', [
            'category' => $category,
            'dataProvider' => $dataProvider,
        ]);
    }

    /**
     * @param $id
     * @return mixed
     * @throws NotFoundHttpException
     */
    public function actionTag($id)
    {
        if (!$tag = $this->tags->find($id)) {
            throw new NotFoundHttpException('The requested page does not exist.');
        }
        $dataProvider = $this->posts->getAllByTag($tag);

        return $this->render('tag', [
            'tag' => $tag,
            'dataProvider' => $dataProvider,
        ]);
    }

    /**
     * @param $id
     * @return mixed
     * @throws NotFoundHttpException
     */
    public function actionPost($id)
    {
        if (!$post = $this->posts->find($id)) {
            throw new NotFoundHttpException('The requested page does not exist.');
        }

        return $this->render('post', [
            'post' => $post,
        ]);
    }

    /**
     * @param $id
     * @return mixed
     * @throws NotFoundHttpException
     */
    public function actionComment($id)
    {
        if (!$post = $this->posts->find($id)) {
            throw new NotFoundHttpException('The requested page does not exist.');
        }

        $form = new BlogCommentForm();

        if ($form->load(Yii::$app->request->post()) && $form->validate()) {
            try {
                $comment = $this->service->create($post->id, Yii::$app->user->id, $form);
                return $this->redirect(['post', 'id' => $post->id, '#' => 'comment_' . $comment->id]);
            } catch (\DomainException $e) {
                Yii::$app->errorHandler->logException($e);
                Yii::$app->session->setFlash('error', $e->getMessage());
            }
        }

        return $this->render('comment', [
            'post' => $post,
            'model' => $form,
        ]);
    }

	public function beforeAction($action)
	{
		// ...set `$this->enableCsrfValidation` here based on some conditions...
		// call parent method that will check CSRF if such property is true.
		if ($action->id === 'preview') {
			# code...
			$this->enableCsrfValidation = false;
		}
		return parent::beforeAction($action);
	}

	public function actionPreview()
    {
	    Yii::$app->controller->enableCsrfValidation = false;
	    $form = new BlogPostForm();
	    if ($form->load(Yii::$app->request->post()) && $form->validate()) {
		    $post = new BlogPost();
		    $post->id = -1;
		    $post->title = $form->title;
		    $post->description = $form->description;
		    $post->content = $form->content;
		    $post->category_id = $form->category_id;
		    $post->created_at = time();
		    $post->updated_at = time();
		    $post->published_at = time();

		    $meta = new Meta($form->meta->title, $form->meta->description, $form->meta->keywords);
		    $post->meta = $meta;
		    $post->meta_json = Json::encode([
		    	'title' => $form->meta->title,
		    	'description' => $form->meta->description,
		    	'keywords' => $form->meta->keywords,
		    ]);
		    $post->video = $form->video;
		    $post->slug = $form->slug;

		    if ($form->image) {
			    $post->setImage($form->image);
		    }
		    else if ($form->video) {
			    $src = 'https://i.ytimg.com/vi/' . BlogPostHelper::parseYoutubeUrl($post->video) . '/maxresdefault.jpg';
			    $filename = (new Security())->generateRandomString(15) . '.jpg';
			    copy($src, \Yii::getAlias(BlogPost::FILE_ORIGINAL_PATH . '/' . $post->id . '.jpg'));
			    //copy($src, \Yii::getAlias(BlogPost::FILE_ORIGINAL_PATH . '/' . $filename));
			    $post->image = $filename;
		    }

		    if ($post->image && !is_string($post->image)) {
			    $path = $post->getUploadedFilePath( 'image' );
			    FileHelper::createDirectory( pathinfo( $path, PATHINFO_DIRNAME ), 0775, true );
			    $post->image->saveAs( $path );
			    $post->image = $post->getImageFileUrl( 'image' );
		    }

		    return $this->render('post', [
			    'post' => $post,
		    ]);
	    }
	    return '';
    }
}