Blog preview and revisions

common/modules/blog/controllers/PostController.php

@@ -53,11 +53,16 @@ class PostController extends FrontendController
 				'class' => AccessControl::class,
 				'rules' => [
 					[
-						'actions' => ['index', 'category', 'tag', 'post', 'preview'],
+						'actions' => ['index', 'category', 'tag', 'post'],
 						'allow' => true,
 						//'roles' => ['Blog'],
 					],
 					[
+						'actions' => ['preview'],
+						'allow' => true,
+						'roles' => ['BlogManagement'],
+					],
+					[
 						'actions' => ['comment'],
 						'allow' => true,
 						'roles' => ['Comments'],
@@ -178,13 +183,17 @@ class PostController extends FrontendController
 		return parent::beforeAction($action);
 	}
 
-	public function actionPreview()
+	/*public function actionPreview($id = null)
     {
 	    Yii::$app->controller->enableCsrfValidation = false;
 	    $form = new BlogPostForm();
-	    if ($form->load(Yii::$app->request->post()) && $form->validate()) {
+	    $parent = $id ? BlogPost::findOne($id) : null;
+
+	    if ($form->load(Yii::$app->request->post())) {
+		    $form->slug = md5(time());
+	    	if ($form->validate()) {
 			    $post               = new BlogPost();
-		    $post->id = -1;
+			    $post->id           = - 1;
 			    $post->title        = $form->title;
 			    $post->description  = $form->description;
 			    $post->content      = $form->content;
@@ -193,38 +202,52 @@ class PostController extends FrontendController
 			    $post->updated_at   = time();
 			    $post->published_at = time();
 
-		    $meta = new Meta($form->meta->title, $form->meta->description, $form->meta->keywords);
+			    $meta            = new Meta( $form->meta->title, $form->meta->description, $form->meta->keywords );
 			    $post->meta      = $meta;
-		    $post->meta_json = Json::encode([
+			    $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'));
+			    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)) {
+			    if ( $post->image ) {
 				    $path = $post->getUploadedFilePath( 'image' );
 				    FileHelper::createDirectory( pathinfo( $path, PATHINFO_DIRNAME ), 0775, true );
 				    $post->image->saveAs( $path );
 				    $post->image = $post->getImageFileUrl( 'image' );
+			    } else {
+				    $post->image = $parent->image;
+				    //$post->image = $post->getImageFileUrl( 'image' );
 			    }
 
-		    return $this->render('post', [
+			    return $this->render( 'post', [
 				    'post' => $post,
-		    ]);
+			    ] );
 		    }
+	    } else {print_r($form->errors);}
 	    return '';
+    }*/
+
+	public function actionPreview($id)
+	{
+		if (!$post = $this->posts->findPreview($id)) {
+			throw new NotFoundHttpException('The requested page does not exist.');
+		}
+
+		return $this->render('post', [
+			'post' => $post,
+		]);
 	}
 }

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

@@ -8,6 +8,7 @@ use common\modules\blog\forms\BlogPostForm;
 use common\modules\blog\forms\search\BlogPostSearch;
 use common\modules\blog\services\BlogPostManageService;
 use Yii;
+use yii\helpers\Url;
 use yii\web\Controller;
 use yii\web\NotFoundHttpException;
 use yii\filters\VerbFilter;
@@ -49,6 +50,8 @@ class PostController extends Controller
                     'delete-photo' => ['POST'],
                     'move-photo-up' => ['POST'],
                     'move-photo-down' => ['POST'],
+	                'restore-history' => ['POST'],
+                    'clear-history' => ['POST'],
                 ],
             ],
         ];
@@ -76,28 +79,63 @@ class PostController extends Controller
     public function actionView($id)
     {
     	$post = $this->findModel($id);
+
+    	$history = BlogPost::find()
+		    ->andWhere(['OR', ['revision_id' => $id], ['id' => $id]])
+		    ->orderBy(['revision_at' => SORT_DESC])
+		    ->limit(20)
+		    ->all();
+
         return $this->render('view', [
             'post' => $post,
+	        'history' => $history,
         ]);
     }
 
-	/**
-	 * @return string|Response
-	 */
-    public function actionCreate()
+    public function actionCreatePreview($id = null)
     {
+    	$this->service->removePreviews();
+
 	    $form = new BlogPostForm();
-        $form->action = 'create';
+	    $form->type = BlogPost::TYPE_PREVIEW;
+	    if ($form->load(Yii::$app->request->post()) && $form->validate()) {
+		    try {
+			    $post = $this->service->create( $form, BlogPost::TYPE_PREVIEW );
+			    if ($id && !$post->image) {
+			    	$real_post = BlogPost::findOne($id);
+			    	if ($real_post->image) {
+					    $post->image = $real_post->image;
+					    $post->save();
+					    $path = Yii::getAlias('@staticRoot/origin/posts');
+					    $parts = pathinfo($real_post->image);
+					    copy($path . '/' . $real_post->id . '.' . $parts['extension'], $path . '/' . $post->id . '.' .  $parts['extension']);
+				    }
+			    }
+			    return $this->redirect(Url::to(Yii::$app->get('frontendUrlManager')->createAbsoluteUrl(['/blog/post/preview', 'id' => $post->id])));
+		    } catch (\DomainException $e) {
+			    Yii::$app->errorHandler->logException($e);
+			    Yii::$app->session->setFlash('error', $e->getMessage());
+		    }
+	    }
 	    $form->published_at = date('d.m.Y H:i:s');
+	    return $this->render('create', [
+		    'model' => $form,
+	    ]);
+    }
+
+	public function actionCreate()
+    {
+        $form = new BlogPostForm();
         if ($form->load(Yii::$app->request->post()) && $form->validate()) {
             try {
-                $post = $this->service->create($form);
-                return $this->redirect(['view', 'id' => $post->id]);
+	            $post = $this->service->create( $form );
+	            return $this->redirect( [ 'view', 'id' => $post->id ] );
             } catch (\DomainException $e) {
                 Yii::$app->errorHandler->logException($e);
                 Yii::$app->session->setFlash('error', $e->getMessage());
             }
         }
+	    $form->published_at = date('d.m.Y H:i:s');
         return $this->render('create', [
             'model' => $form,
         ]);
@@ -113,7 +151,6 @@ class PostController extends Controller
     {
         $post = $this->findModel($id);
         $form = new BlogPostForm($post);
-	    $form->action = 'update';
         $form->published_at = date('d.m.Y H:i:s', $form->published_at);
         if ($form->load(Yii::$app->request->post()) && $form->validate()) {
             try {
@@ -207,6 +244,23 @@ class PostController extends Controller
 		return $out;
 	}
 
+	public function actionRestoreHistory($id)
+	{
+		$post = $this->findModel($id);
+		if ($post_id = $post->revision_id) {
+			$this->service->restoreHistory($id, $post->revision_id);
+			return $this->redirect(['/blog/manage/post/view', 'id' => $post_id]);
+		}
+		return $this->redirect(['/blog/manage/post/index']);
+	}
+
+	public function actionClearHistory($id)
+	{
+		$post = $this->findModel($id);
+		$this->service->clearHistory($post);
+		return $this->redirect(['/blog/manage/post/view', 'id' => $post->id]);
+	}
+
 	/**
 	 * @param $id
 	 *

common/modules/blog/entities/BlogPost.php

@@ -4,6 +4,7 @@ namespace common\modules\blog\entities;
 
 use common\modules\blog\entities\queries\BlogPostQuery;
 use core\behaviors\MetaBehavior;
+use core\behaviors\RevisionBehavior;
 use core\entities\Meta;
 use lhs\Yii2SaveRelationsBehavior\SaveRelationsBehavior;
 use yii\behaviors\TimestampBehavior;
@@ -32,6 +33,9 @@ use Yii;
  * @property int $comments_count
  * @property int $views
  * @property string $slug
+ * @property int $type
+ * @property int $revision_at
+ * @property int $revision_id
  *
  * @property BlogComment[] $blogComments
  * @property BlogTagAssignment[] $blogTagAssignments
@@ -45,11 +49,15 @@ class BlogPost extends ActiveRecord
 	const STATUS_DRAFT = 0;
 	const STATUS_ACTIVE = 1;
 
+	const TYPE_PUBLIC = 0;
+	const TYPE_REVISION = 1;
+	const TYPE_PREVIEW = 2;
+
 	const FILE_ORIGINAL_PATH = '@staticRoot/origin/posts';
 
 	public $meta;
 
-	public static function create($categoryId, $title, $slug, $description, $content, $published_at, $video, Meta $meta): self
+	public static function create($categoryId, $title, $slug, $description, $content, $published_at, $video, $type = 0, Meta $meta): self
 	{
 		$post = new static();
 		$post->category_id = $categoryId;
@@ -63,6 +71,8 @@ class BlogPost extends ActiveRecord
 		$post->comments_count = 0;
 		$post->published_at = $published_at;
 		$post->video = $video;
+		$post->type = $type;
+		$post->revision_at = time();
 		return $post;
 	}
 
@@ -72,7 +82,7 @@ class BlogPost extends ActiveRecord
 	}
 
 
-	public function edit($categoryId, $title, $slug, $description, $content, $published_at, $video, Meta $meta): void
+	public function edit($categoryId, $title, $slug, $description, $content, $published_at, $video, $type = 0, Meta $meta): void
 	{
 		$this->category_id = $categoryId;
 		$this->title = $title;
@@ -82,6 +92,8 @@ class BlogPost extends ActiveRecord
 		$this->meta = $meta;
 		$this->published_at = $published_at;
 		$this->video = $video;
+		$this->type = $type;
+		$this->revision_at = time();
 	}
 
     /**
@@ -108,6 +120,8 @@ class BlogPost extends ActiveRecord
             'content' => Yii::t('blog', 'Content'),
             'image' => Yii::t('blog', 'Image'),
             'video' => Yii::t('blog', 'Video'),
+            'type' => Yii::t('blog', 'Type'),
+            'revision_at' => Yii::t('blog', 'Revision At'),
             'status' => Yii::t('blog', 'Status'),
             'meta_json' => Yii::t('blog', 'Meta Json'),
             'comments_count' => Yii::t('blog', 'Comments Count'),

common/modules/blog/entities/queries/BlogPostQuery.php

@@ -23,11 +23,18 @@ class BlogPostQuery extends ActiveQuery
     	return $this->andWhere(['<', 'published_at', time()]);
     }
 
-    public function byType($type)
+    public function typePublic($alias = null)
     {
-    	return $this->andWhere(['type_id' => $type]);
+	    return $this->andWhere([
+		    ($alias ? $alias . '.' : '') . 'type' => BlogPost::TYPE_PUBLIC,
+	    ]);
     }
 
+    /*public function byType($type)
+    {
+    	return $this->andWhere(['type_id' => $type]);
+    }*/
+
     public function last()
     {
     	return $this->orderBy(['published_at' => SORT_DESC]);

common/modules/blog/forms/BlogPostForm.php

@@ -7,6 +7,7 @@ use common\modules\blog\entities\BlogPost;
 use core\forms\CompositeForm;
 use core\forms\MetaForm;
 use core\validators\SlugValidator;
+use yii\db\ActiveQuery;
 use yii\helpers\ArrayHelper;
 use yii\web\UploadedFile;
 use Yii;
@@ -17,7 +18,7 @@ use Yii;
  */
 class BlogPostForm extends CompositeForm
 {
-	public $action;
+	public $type;
 
     public $category_id;
     public $title;
@@ -65,7 +66,21 @@ class BlogPostForm extends CompositeForm
 	        ['reset_image', 'boolean'],
 	        ['published_at', 'safe'],
 	        ['slug', SlugValidator::class],
-	        [['slug'], 'unique', 'targetClass' => BlogPost::class, 'filter' => $this->_post ? ['<>', 'id', $this->_post->id] : null],
+	        //[['slug'], 'unique', 'targetClass' => BlogPost::class, 'filter' => $this->_post ? ['<>', 'id', $this->_post->id] : null],
+	        //[['slug'], 'unique', 'targetClass' => BlogPost::class, 'filter' => $this->_post ? ['<>', 'id', $this->_post->id] : ['type' => BlogPost::TYPE_PUBLIC]],
+	        //[['slug'], 'unique', 'targetClass' => BlogPost::class, 'filter' => $this->_post ? ['AND', ['<>', 'id', $this->_post->id], ['type' => BlogPost::TYPE_PUBLIC]] : ['type' => BlogPost::TYPE_PUBLIC]],
+	        [['slug'], 'unique', 'targetClass' => BlogPost::class, 'filter' => function (ActiveQuery $query) {
+
+        	    if ($this->type != BlogPost::TYPE_PUBLIC) {
+		            $query->andWhere($this->type . '=' . BlogPost::TYPE_PUBLIC);
+	            }
+
+        	    $query->andWhere(['type' => BlogPost::TYPE_PUBLIC]);
+        	    if ($this->_post) {
+        	    	$query->andWhere(['<>', 'id', $this->_post->id]);
+	            }
+	            return $query;
+	        }],
         ];
     }
 

common/modules/blog/forms/search/BlogPostSearch.php

@@ -30,7 +30,7 @@ class BlogPostSearch extends Model
      */
     public function search(array $params): ActiveDataProvider
     {
-        $query = BlogPost::find();
+        $query = BlogPost::find()->typePublic();
 
         $dataProvider = new ActiveDataProvider([
             'query' => $query,

common/modules/blog/helpers/BlogPostHelper.php

@@ -2,6 +2,7 @@
 
 namespace common\modules\blog\helpers;
 
+use common\modules\blog\entities\BlogPost;
 use core\entities\post\Post;
 use yii\helpers\ArrayHelper;
 use yii\helpers\Html;
@@ -67,4 +68,20 @@ class BlogPostHelper
 		}
 		return $id;
 	}
+
+	public static function saveRevision(BlogPost $model) {
+		if (!$model->revision_id) {
+			$revision                      = clone $model;
+			$revision->id                  = null;
+			$revision->isNewRecord         = true;
+			$revision->revision_at         = $revision->updated_at;
+			$revision->revision_id         = $model->id;
+			$revision->type                = BlogPost::TYPE_REVISION;
+			$revision->save( $revision );
+
+			$path = Yii::getAlias('@staticRoot/origin/posts');
+			$parts = pathinfo($model->image);
+			copy($path . '/' . $model->id . '.' . $parts['extension'], $path . '/' . $revision->id . '.' .  $parts['extension']);
+		}
+	}
 }

common/modules/blog/messages/ru/blog.php

@@ -67,4 +67,14 @@ return [
 	'Blog Post' => 'Статья',
 	'Blog Home' => 'Блог',
 	'Select post...' => 'Укажите статью...',
+	'Type' => 'Тип',
+	'Revision At' => 'Версия',
+	'History' => 'История изменений',
+	'Clear History' => 'Очистить историю',
+	'History is empty' => 'Нет изменений',
+	'Current Edition' => 'Текущая редакция',
+	'Restore' => 'Восстановить',
+	'Are you sure you want to restore this history item?' => 'Вы уверены, что хотите восстановить эту запись?',
+	'Are you sure you want to remove this history?' => 'Вы уверены, что хотите удалить всю историю?',
+	'View' => 'Просмотр',
 ];

common/modules/blog/migrations/m180725_091725_add_blog_posts_type_field.php

@@ -0,0 +1,34 @@
+<?php
+
+use yii\db\Migration;
+
+/**
+ * Class m180725_091725_add_blog_posts_type_field
+ */
+class m180725_091725_add_blog_posts_type_field extends Migration
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function safeUp()
+    {
+		$this->addColumn('{{%blog_posts}}', 'type', $this->integer(2)->defaultValue(0)); // 0 - public, 1 - revision, 2 - preview
+	    $this->addColumn('{{%blog_posts}}', 'revision_at', $this->integer()->unsigned());
+	    $this->addColumn('{{%blog_posts}}', 'revision_id', $this->integer());
+
+	    $this->createIndex('idx_blog_posts_revision_id', '{{%blog_posts}}', 'revision_id');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function safeDown()
+    {
+    	$this->dropIndex('idx_blog_posts_revision_id', '{{%blog_posts}}');
+
+        $this->dropColumn('{{%blog_posts}}', 'type');
+	    $this->dropColumn('{{%blog_posts}}', 'revision_at');
+	    $this->dropColumn('{{%blog_posts}}', 'revision_id');
+	    return false;
+    }
+}

common/modules/blog/migrations/m180725_113503_remove_blog_posts_slug_unique_index.php

@@ -0,0 +1,28 @@
+<?php
+
+use yii\db\Migration;
+
+/**
+ * Class m180725_113503_remove_blog_posts_slug_unique_index
+ */
+class m180725_113503_remove_blog_posts_slug_unique_index extends Migration
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function safeUp()
+    {
+    	$this->dropIndex('{{%idx-blog_posts-slug}}', '{{%blog_posts}}');
+	    $this->createIndex('{{%idx-blog_posts-slug}}', '{{%blog_posts}}', 'slug');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function safeDown()
+    {
+    	return false;
+	    $this->dropIndex('{{%idx-blog_posts-slug}}', '{{%blog_posts}}');
+	    $this->createIndex('{{%idx-blog_posts-slug}}', '{{%blog_posts}}', 'slug');
+    }
+}

common/modules/blog/repositories/read/BlogPostReadRepository.php

@@ -13,40 +13,40 @@ class BlogPostReadRepository
 {
     public function count(): int
     {
-        return BlogPost::find()->active()->pubDate()->count();
+        return BlogPost::find()->active()->pubDate()->typePublic()->count();
     }
 
     public function getAllByRange($offset, $limit): array
     {
-        return BlogPost::find()->active()->pubDate()->orderBy(['id' => SORT_ASC])->limit($limit)->offset($offset)->all();
+        return BlogPost::find()->active()->pubDate()->typePublic()->orderBy(['id' => SORT_ASC])->limit($limit)->offset($offset)->all();
     }
 
     public function getAll(): DataProviderInterface
     {
-        $query = BlogPost::find()->active()->pubDate()->with('category');
+        $query = BlogPost::find()->active()->pubDate()->typePublic()->with('category');
         return $this->getProvider($query);
     }
 
     public function getAllByCategory(BlogCategory $category): DataProviderInterface
     {
-        $query = BlogPost::find()->active()->pubDate()->andWhere(['category_id' => $category->id])->with('category');
+        $query = BlogPost::find()->active()->pubDate()->typePublic()->andWhere(['category_id' => $category->id])->with('category');
         return $this->getProvider($query);
     }
 
     public function findNext(int $id): ?BlogPost
     {
-        return BlogPost::find()->active()->pubDate()->andWhere(['>', 'id', $id])->one();
+        return BlogPost::find()->active()->pubDate()->typePublic()->andWhere(['>', 'id', $id])->one();
     }
 
     public function findPrev(int $id): ?BlogPost
     {
-        return BlogPost::find()->active()->pubDate()->andWhere(['<', 'id', $id])->orderBy(['id' => SORT_DESC])->one();
+        return BlogPost::find()->active()->pubDate()->typePublic()->andWhere(['<', 'id', $id])->orderBy(['id' => SORT_DESC])->one();
     }
 
 
     public function getAllByTag(BlogTag $tag): DataProviderInterface
     {
-        $query = BlogPost::find()->alias('p')->active('p')->with('category');
+        $query = BlogPost::find()->alias('p')->active('p')->typePublic('p')->with('category');
         $query->joinWith(['blogTagAssignments ta'], false);
         $query->andWhere(['ta.tag_id' => $tag->id]);
         $query->groupBy('p.id');
@@ -55,7 +55,7 @@ class BlogPostReadRepository
 
 	public function getByTagsId(BlogPost $post, array $tag_ids, int $limit = 15): DataProviderInterface
 	{
-		$query = BlogPost::find()->alias('p')->active('p')->with('category');
+		$query = BlogPost::find()->alias('p')->active('p')->typePublic('p')->with('category');
 		$query->joinWith(['blogTagAssignments ta'], false);
 		$query->andWhere(['ta.tag_id' => $tag_ids]);
 		$query->andWhere(['!=', 'p.id', $post->id]);
@@ -91,4 +91,9 @@ class BlogPostReadRepository
 	{
 		return BlogPost::find()->andWhere(['slug' => $slug])->one();
 	}
+
+	public function findPreview($id): ?BlogPost
+	{
+		return BlogPost::find()->andWhere(['id' => $id])->one();
+	}
 }

common/modules/blog/services/BlogPostManageService.php

@@ -35,7 +35,7 @@ class BlogPostManageService
         $this->transaction = $transaction;
     }
 
-    public function create(BlogPostForm $form): BlogPost
+    public function create(BlogPostForm $form, $type = BlogPost::TYPE_PUBLIC): BlogPost
     {
         $category = $this->categories->get($form->category_id);
 
@@ -47,6 +47,7 @@ class BlogPostManageService
             $form->content,
             $form->published_at,
             $form->video,
+            $type,
             new Meta(
                 $form->meta->title,
                 $form->meta->description,
@@ -91,6 +92,8 @@ class BlogPostManageService
     public function edit($id, BlogPostForm $form): void
     {
         $post = $this->posts->get($id);
+        BlogPostHelper::saveRevision($post);
+
         $category = $this->categories->get($form->category_id);
 
         $post->edit(
@@ -101,6 +104,7 @@ class BlogPostManageService
             $form->content,
             $form->published_at,
             $form->video,
+            $post->type,
             new Meta(
                 $form->meta->title,
                 $form->meta->description,
@@ -129,9 +133,10 @@ class BlogPostManageService
 
         $this->transaction->wrap(function () use ($post, $form) {
             $post->revokeTags();
+	        //$post->doRevision();
             $this->posts->save($post);
+	        //$post->stopRevision();
 
-            $tag_updated = false;
             if (is_array($form->tags->new_tags) && !empty($form->tags->new_tags)) {
 	            foreach ( $form->tags->new_tags as $tag_id => $tag_name ) {
 		            if ( ! $tag = $this->tags->findByName( $tag_name ) ) {
@@ -139,13 +144,9 @@ class BlogPostManageService
 			            $this->tags->save( $tag );
 		            }
 		            $post->assignTag( $tag->id );
-		            $tag_updated = true;
 	            }
             }
-
-            if ($tag_updated) {
 	        $this->posts->save( $post );
-            }
         });
     }
 
@@ -168,4 +169,42 @@ class BlogPostManageService
         $post = $this->posts->get($id);
         $this->posts->remove($post);
     }
+
+    public function removePreviews(): void
+    {
+    	$posts = BlogPost::find()->andWhere(['type' => BlogPost::TYPE_PREVIEW])->all();
+    	foreach ($posts as $post) {
+    		$post->delete();
+	    }
+    }
+
+    public function clearHistory(BlogPost $post): void
+    {
+    	BlogPost::deleteAll(['revision_id' => $post->id]);
+    }
+
+    public function restoreHistory($from_id, $id): void
+    {
+    	$post = $this->posts->get($id);
+    	$from = $this->posts->get($from_id);
+
+	    // remove current revision
+	    $this->posts->remove($post);
+
+	    // copy image
+	    $path = \Yii::getAlias('@staticRoot/origin/posts');
+	    $parts = pathinfo($from->image);
+	    copy($path . '/' . $from->id . '.' . $parts['extension'], $path . '/' . $id . '.' .  $parts['extension']);
+	    $from->createThumbs();
+
+    	$from->id = $id;
+    	$from->type = BlogPost::TYPE_PUBLIC;
+    	$from->revision_id = null;
+
+    	// restore revision to current
+    	$this->posts->save($from);
+
+    	// delete never revisions
+	    BlogPost::deleteAll(['AND', ['revision_id' => $from->id], ['>', 'revision_at', $from->revision_at]]);
+    }
 }

common/modules/blog/views/manage/post/_form.php

@@ -168,7 +168,7 @@ $this->registerJs($js2);
 						'class' => 'btn btn-info',
 						'value'=>'preview',
 						'name'=>'submit_preview',
-						'formaction' => Url::to(Yii::$app->params['frontendHostInfo'] . '/blog/post/preview'),
+						'formaction' => Url::to(['/blog/manage/post/create-preview', 'id' => $model->_post ? $model->_post->id : null]),
 						'formtarget' => '_blank',
 					]) ?>
 					<hr>

common/modules/blog/views/manage/post/view.php

@@ -8,6 +8,7 @@ use yii\widgets\DetailView;
 /* @var $this yii\web\View */
 /* @var $post \common\modules\blog\entities\BlogPost */
 /* @var $modificationsProvider yii\data\ActiveDataProvider */
+/* @var $history \common\modules\blog\entities\BlogPost[] */
 
 $title = $post->title;
 $this->title = $title;
@@ -33,6 +34,10 @@ $this->params['breadcrumbs'][] = $title;
         ]) ?>
     </p>
 
+
+	<div class="row">
+		<div class="col-md-9">
+
 		    <div class="box">
 		        <div class="box-header with-border"><?= Yii::t('blog', 'Common') ?></div>
 		        <div class="box-body">
@@ -143,4 +148,58 @@ $this->params['breadcrumbs'][] = $title;
 		        </div>
 		    </div>
 
+		</div>
+		<div class="col-md-3">
+			<div class="box">
+				<div class="box-header with-border"><?= Yii::t('blog', 'History') ?></div>
+				<div class="box-body">
+
+					<?php if ($history): ?>
+					<ul>
+					<?php foreach ($history as $item): ?>
+						<li>
+							<?php if ($item->revision_id): ?>
+								<?= date('d.m.Y H:i', $item->revision_at) ?>
+								→
+
+								<?= Html::a(Yii::t('blog', 'View'), \yii\helpers\Url::to(Yii::$app->get('frontendUrlManager')->createAbsoluteUrl(['/blog/post/preview', 'id' => $item->id])), [
+									'style' => 'font-size:11px;',
+									'target' => '_blank',
+								]) ?>
+
+								|
+
+								<?= Html::a(Yii::t('blog', 'Restore'), ['/blog/manage/post/restore-history', 'id' => $item->id], [
+									'style' => 'font-size:11px; color: red',
+									'data' => [
+										'confirm' => Yii::t('blog', 'Are you sure you want to restore this history item?'),
+										'method' => 'post',
+									],
+								]) ?>
+
+							<?php else: ?>
+								<strong><?= Yii::t('blog', 'Current Edition') ?></strong>
+							<?php endif; ?>
+						</li>
+					<?php endforeach; ?>
+					</ul>
+
+					<?= Html::a(Yii::t('blog', 'Clear History'), ['/blog/manage/post/clear-history', 'id' => $post->id], [
+						'class' => 'btn btn-danger btn-sm pull-right',
+						'data' => [
+							'confirm' => Yii::t('blog', 'Are you sure you want to remove this history?'),
+							'method' => 'post',
+						],
+					]) ?>
+					<?php else: ?>
+						<div style="padding: 20px 0; text-align: center"><?= Yii::t('blog', 'History is empty') ?></div>
+					<?php endif; ?>
+
+				</div>
+			</div>
+		</div>
+	</div>
+
+
+
 </div>

vagrant/nginx/log/static-error.log

@@ -19,3 +19,27 @@
 2018/07/06 10:17:57 [error] 1920#1920: *1225 open() "/app/static/cache/posts/blog_post_-1.jpg" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_-1.jpg HTTP/1.1", host: "static.morework.local"
 2018/07/06 10:18:44 [error] 1920#1920: *1228 open() "/app/static/cache/posts/blog_post_-1.jpg" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_-1.jpg HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview"
 2018/07/06 10:20:25 [error] 1920#1920: *1232 open() "/app/static/cache/posts/blog_post_-1.jpg" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_-1.jpg HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview"
+2018/07/25 14:48:26 [error] 1933#1933: *552 open() "/app/static/cache/posts/blog_post_13.jpg" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_13.jpg HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview?id=22"
+2018/07/25 14:49:11 [error] 1933#1933: *558 open() "/app/static/cache/posts/blog_post_23.jpg" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_23.jpg HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview?id=23"
+2018/07/25 14:49:57 [error] 1933#1933: *558 open() "/app/static/cache/posts/blog_post_24.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_24.png HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview?id=24"
+2018/07/25 14:50:22 [error] 1933#1933: *558 open() "/app/static/cache/posts/blog_post_25.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_25.png HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview?id=25"
+2018/07/25 14:55:07 [error] 1933#1933: *583 open() "/app/static/cache/posts/blog_post_26.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_26.png HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview?id=26"
+2018/07/25 14:55:25 [error] 1933#1933: *583 open() "/app/static/cache/posts/blog_post_26.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_26.png HTTP/1.1", host: "static.morework.local"
+2018/07/25 14:55:32 [error] 1933#1933: *583 open() "/app/static/cache/posts/blog_post_26.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_26.png HTTP/1.1", host: "static.morework.local"
+2018/07/25 15:14:57 [error] 1933#1933: *638 open() "/app/static/cache/posts/blog_post_28.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_28.png HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview?id=28"
+2018/07/25 15:19:30 [error] 1933#1933: *663 open() "/app/static/cache/posts/blog_post_30.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_30.png HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview?id=30"
+2018/07/25 15:33:18 [error] 1933#1933: *669 open() "/app/static/cache/posts/blog_post_31.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_31.png HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview?id=31"
+2018/07/25 15:35:13 [error] 1933#1933: *676 open() "/app/static/cache/posts/blog_post_32.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_32.png HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview?id=32"
+2018/07/25 20:06:07 [error] 1933#1933: *946 open() "/app/static/cache/posts/blog_post_53.jpg" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/blog_post_53.jpg HTTP/1.1", host: "static.morework.local", referrer: "http://morework.local/blog/post/preview?id=53"
+2018/07/25 23:05:07 [error] 1933#1933: *1256 open() "/app/static/cache/posts/thumb_gallery_view_68.jpg" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_68.jpg HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/view/68"
+2018/07/25 23:36:51 [error] 1933#1933: *1389 open() "/app/static/cache/posts/thumb_gallery_view_27.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_27.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/view/27"
+2018/07/25 23:47:55 [error] 1933#1933: *1465 open() "/app/static/cache/posts/thumb_gallery_view_83.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_83.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/view/83"
+2018/07/25 23:48:13 [error] 1933#1933: *1465 open() "/app/static/cache/posts/thumb_gallery_view_83.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_83.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/update?id=83"
+2018/07/25 23:48:13 [error] 1933#1933: *1465 open() "/app/static/cache/posts/thumb_gallery_view_83.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_83.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/update?id=83"
+2018/07/25 23:50:33 [error] 1933#1933: *1497 open() "/app/static/cache/posts/thumb_gallery_view_83.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_83.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/view/83"
+2018/07/25 23:50:39 [error] 1933#1933: *1497 open() "/app/static/cache/posts/thumb_gallery_view_83.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_83.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/update?id=83"
+2018/07/25 23:50:39 [error] 1933#1933: *1497 open() "/app/static/cache/posts/thumb_gallery_view_83.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_83.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/update?id=83"
+2018/07/25 23:51:08 [error] 1933#1933: *1497 open() "/app/static/cache/posts/thumb_gallery_view_83.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_83.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/view/83"
+2018/07/25 23:51:14 [error] 1933#1933: *1497 open() "/app/static/cache/posts/thumb_gallery_view_83.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_83.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/update?id=83"
+2018/07/25 23:51:14 [error] 1933#1933: *1497 open() "/app/static/cache/posts/thumb_gallery_view_83.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_83.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/update?id=83"
+2018/07/26 15:10:09 [error] 1933#1933: *1523 open() "/app/static/cache/posts/thumb_gallery_view_83.png" failed (2: No such file or directory), client: 192.168.83.1, server: static.morework.local, request: "GET /cache/posts/thumb_gallery_view_83.png HTTP/1.1", host: "static.morework.local", referrer: "http://admin.morework.local/blog/manage/post/view/83"