示例#1
0
 protected function handle()
 {
     $request = $this->getRequest();
     if ($request->getMethod() == 'POST') {
         $ids = $request->request->get('ids');
         $session = $this->getSession();
         $db = ArticleModel::getDb();
         try {
             $db->transaction();
             foreach ($ids as $id) {
                 $article = ArticleModel::getArticle($id);
                 if ($article) {
                     // 删除标签分类
                     $article_tags = ArticleTagModel::allRelationship(function (QueryBuilder $qb) use($article) {
                         /** @var ArticleModel $article */
                         $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article->id);
                     });
                     foreach ($article_tags as $article_tag) {
                         ArticleTagModel::deleteRelationship($article_tag['article_id'], $article_tag['tag_id']);
                         $tag = TagModel::getTag($article_tag['tag_id']);
                         if ($tag) {
                             $tag->articleCount -= 1;
                             TagModel::saveTag($tag);
                         }
                     }
                     // 删除媒体
                     $medias = MediaModel::allMedias(function (QueryBuilder $qb) use($article) {
                         /** @var ArticleModel $article */
                         $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article->id);
                     });
                     foreach ($medias as $media) {
                         MediaModel::deleteMedia($media['id']);
                     }
                     // 删除文章
                     ArticleModel::deleteArticle($id);
                 }
             }
             $db->commit();
             $session->addFlash('success', '操作成功');
         } catch (\Exception $e) {
             $db->rollback();
             $session->addFlash('error', $e->getMessage());
         }
         return new RedirectResponse($this->generateUrl('admin_www_article'));
     } else {
         $ids = $request->query->get('ids');
         $ids = json_decode($ids);
         if (!$ids) {
             return $this->render('@TachigoWWWAdmin/error-modal.html.twig', array('message' => '没有选中任何文章'));
         } else {
             $pager = ArticleModel::listArticles(1, count($ids), function (QueryBuilder $qb) use($ids) {
                 $qb->where($qb->expr()->in('id', $ids));
             });
             return $this->render('article/delete.html.twig', array('articles' => $pager));
         }
     }
 }
示例#2
0
 public function __invoke($slug = null)
 {
     $structure = StructureModel::search($slug);
     if (!$structure) {
         $structure = StructureModel::getStructure($slug);
     }
     if (!$structure) {
         // 404
     }
     // 将所有文章用博客的形式展现
     // 筛选出所有发布的文章
     $request = $this->getRequest();
     $page = $request->query->get('page');
     $size = 15;
     $articles_pager = ArticleModel::listArticles($page, $size, function (QueryBuilder $qb) use($structure) {
         $qb->andWhere($qb->expr()->gt('publish_timestamp', 0));
         $qb->andWhere($qb->expr()->eq('structure_id', ':structure_id'))->setParameter(':structure_id', $structure->id);
         $qb->addOrderBy('publish_timestamp', 'desc');
     });
     $articles = $articles_pager->getData();
     foreach ($articles as $key => $article) {
         // 取出文章的图片媒体
         $article['media'] = MediaModel::allMedias(function (QueryBuilder $qb) use($article) {
             $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article['id']);
             $qb->andWhere($qb->expr()->eq('type', ':type'))->setParameter(':type', 'picture');
         });
         // 取出文章的tag标签
         $article_tags = ArticleTagModel::allRelationship(function (QueryBuilder $qb) use($article) {
             $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article['id']);
         });
         $article['tags'] = array();
         foreach ($article_tags as $article_tag) {
             $t = TagModel::getTag($article_tag['tag_id']);
             $article['tags'][] = $t->toArray();
         }
         // 发布者
         $article['publisher'] = array();
         $article_publishers = ArticlePublisherModel::allRelationship(function (QueryBuilder $qb) use($article) {
             $qb->where($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article['id']);
         });
         if ($article_publishers) {
             $article_publisher = array_shift($article_publishers);
             $publisher_id = $article_publisher['publisher_id'];
             $publisher = PublisherModel::getPublisher($publisher_id);
             if ($publisher) {
                 $article['publisher'] = $publisher;
             }
         }
         $articles[$key] = $article;
     }
     $articles_pager->setData($articles);
     return $this->render('category/blogs.html.twig', array('blog_posts' => $articles_pager));
 }
示例#3
0
 public function __invoke($id = null)
 {
     $request = $this->getRequest();
     $page = $request->query->get('page');
     $size = 15;
     // 查询出发布者
     $publisher_id = $id;
     $publisher = PublisherModel::getPublisher($publisher_id);
     $publisher_articles = ArticlePublisherModel::allRelationship(function (QueryBuilder $qb) use($publisher) {
         $qb->where($qb->expr()->eq('publisher_id', ':publisher_id'))->setParameter(':publisher_id', $publisher->id);
     });
     $article_ids = array();
     foreach ($publisher_articles as $publisher_article) {
         $article_ids[] = $publisher_article['article_id'];
     }
     $article_ids = array_unique($article_ids);
     // 查询出文章
     $articles_pager = ArticleModel::listArticles($page, $size, function (QueryBuilder $qb) use($article_ids) {
         $qb->andWhere($qb->expr()->gt('publish_timestamp', 0));
         if ($article_ids) {
             $qb->andWhere($qb->expr()->in('id', $article_ids));
         } else {
             $qb->andWhere($qb->expr()->eq('id', 0));
         }
         $qb->addOrderBy('publish_timestamp', 'desc');
     });
     $articles = $articles_pager->getData();
     foreach ($articles as $key => $article) {
         // 取出文章的图片媒体
         $article['media'] = MediaModel::allMedias(function (QueryBuilder $qb) use($article) {
             $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article['id']);
             $qb->andWhere($qb->expr()->eq('type', ':type'))->setParameter(':type', 'picture');
         });
         // 取出文章的tag标签
         $article_tags = ArticleTagModel::allRelationship(function (QueryBuilder $qb) use($article) {
             $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article['id']);
         });
         $article['tags'] = array();
         foreach ($article_tags as $article_tag) {
             $t = TagModel::getTag($article_tag['tag_id']);
             $article['tags'][] = $t->toArray();
         }
         // 发布者
         $article['publisher'] = $publisher;
         $articles[$key] = $article;
     }
     $articles_pager->setData($articles);
     return $this->render('publisher/blogs.html.twig', array('blog_posts' => $articles_pager, 'publisher' => $publisher));
 }
示例#4
0
 public function __invoke($id = null)
 {
     $request = $this->getRequest();
     $a_page = $request->query->get('a_page');
     if (!$a_page) {
         $a_page = 1;
     }
     $a_size = $request->query->get('a_size');
     $article = ArticleModel::getArticle($id);
     $article = $article->toArray();
     // 取出文章的tag标签
     $article_tags = ArticleTagModel::allRelationship(function (QueryBuilder $qb) use($article) {
         $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article['id']);
     });
     $article['tags'] = array();
     foreach ($article_tags as $article_tag) {
         $t = TagModel::getTag($article_tag['tag_id']);
         $article['tags'][] = $t->toArray();
     }
     // 分页
     if (!$a_size) {
         $content_pager = explode('<!-- pagebreak -->', $article['content']);
     } else {
         // 全文
         $content_pager = array(str_replace('<!-- pagebreak -->', '', $article['content']));
     }
     $article['content'] = $content_pager[$a_page - 1];
     if (!$a_size) {
         $count = count($content_pager);
     } else {
         $count = 0;
     }
     $a_pager = new Pager(array(), $count, $a_page, 1);
     $a_pager->setPageParamName('a_page');
     // 文章的发布者
     $article['publisher'] = array();
     $article_publishers = ArticlePublisherModel::allRelationship(function (QueryBuilder $qb) use($article) {
         $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article['id']);
     });
     if ($article_publishers) {
         $article_publisher = array_shift($article_publishers);
         $publisher_id = $article_publisher['publisher_id'];
         $publisher = PublisherModel::getPublisher($publisher_id);
         if ($publisher) {
             $article['publisher'] = $publisher;
         }
     }
     // 轮播图
     $carousels = MediaModel::allMedias(function (QueryBuilder $qb) use($article) {
         $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article['id']);
         $qb->andWhere($qb->expr()->eq('type', ':type'))->setParameter(':type', 'carousel');
     });
     foreach ($carousels as $k => $v) {
         $metadata = json_decode($v['metadata'], true);
         unset($v['metadata']);
         $v['description'] = '';
         if ($metadata) {
             $v['description'] = $metadata['description'];
         }
         $carousels[$k] = $v;
     }
     // 所有的插件
     $data = PluginModel::allPlugins();
     $plugins = array();
     foreach ($data as $row) {
         $row['sources'] = json_decode($row['sources'], true);
         $row['options'] = json_decode($row['options'], true);
         $row['apply_code'] = htmlspecialchars_decode($row['apply_code']);
         $plugins[$row['id']] = $row;
     }
     // 文章的插件
     $data = ArticlePluginModel::allRelationship(function (QueryBuilder $qb) use($article) {
         $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article['id']);
     });
     foreach ($data as $row) {
         $row['sources'] = json_decode($row['sources'], true);
         $row['options'] = json_decode($row['options'], true);
         $row['apply_code'] = htmlspecialchars_decode($row['apply_code']);
         if (isset($plugins[$row['plugin_id']])) {
             $plugins[$row['plugin_id']] = $row;
         }
     }
     // 评论
     $c_page = $request->query->get('c_page');
     if (!$c_page) {
         $c_page = 1;
     }
     $c_size = $request->query->get('c_size');
     if (!$c_size) {
         $c_size = 3;
     }
     $c_pager = CommentModel::listComments($c_page, $c_size, function (QueryBuilder $qb) use($article) {
         $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article['id']);
         $qb->addOrderBy('create_timestamp');
     });
     $comments_data = $c_pager->getData();
     foreach ($comments_data as $k => $comment_data) {
         // 获取用户数据
         $comment_user_id = $comment_data['user_id'];
         /** @var \Tachigo\User\Aware\Component\UserAwareDispatcher $dispatcher */
         $dispatcher = $this->getContainer()->tag('tachigo_user_dispatcher');
         /** @var \Tachigo\User\Aware\Hook\UserHook $hook */
         $hook = $this->getContainer()->tag('tachigo_user_hook.user');
         $hook->setUserId($comment_user_id);
         $dispatcher->fire($hook);
         $comment_data['user'] = $hook->getResults();
         $comment_data['reply'] = array();
         if ($comment_data['comment_id']) {
             $reply_comment = CommentModel::getComment($comment_data['comment_id'])->toArray();
             $comment_user_id = $reply_comment['user_id'];
             /** @var \Tachigo\User\Aware\Component\UserAwareDispatcher $dispatcher */
             $dispatcher = $this->getContainer()->tag('tachigo_user_dispatcher');
             /** @var \Tachigo\User\Aware\Hook\UserHook $hook */
             $hook = $this->getContainer()->tag('tachigo_user_hook.user');
             $hook->setUserId($comment_user_id);
             $dispatcher->fire($hook);
             $reply_comment['user'] = $hook->getResults();
             $comment_data['reply'] = $reply_comment;
         }
         $comments_data[$k] = $comment_data;
     }
     $c_pager->setData($comments_data);
     $c_pager->setPageParamName('c_page');
     // 分页内容
     $pager_query = array('a_page' => $a_page, 'a_size' => $a_size, 'c_page' => $c_page, 'c_size' => $c_size);
     $a_pager->setQuery($pager_query);
     $c_pager->setQuery($pager_query);
     // 导航条
     $structure_id = $article['structure_id'];
     $structure = StructureModel::getStructure($structure_id);
     /** @var StructureModel[] $breadcrumbs */
     $breadcrumbs = $structure->getNodeSinglePath();
     array_shift($breadcrumbs);
     return $this->render('article/blog.html.twig', array('article' => $article, 'a_pager' => $a_pager, 'c_pager' => $c_pager, 'carousels' => $carousels, 'plugins' => $plugins, 'breadcrumbs' => $breadcrumbs));
 }
示例#5
0
 protected function handle()
 {
     $request = $this->getRequest();
     if ($request->getMethod() == 'POST') {
         try {
             $posts = $request->request;
             $file_path = $posts->get('image_path');
             $x = $posts->get('x');
             $y = $posts->get('y');
             $w = $posts->get('w');
             $h = $posts->get('h');
             $path_info = pathinfo($file_path);
             $imagine = new Imagine();
             $raw_image = $imagine->open($file_path);
             $large_image = $raw_image->copy();
             $large_image->crop(new Point($x, $y), new Box($w, $h));
             $format_filename = '{time}{rand:6}';
             $t = time();
             $large_file_name = $format_filename;
             $large_file_name = str_replace("{time}", $t, $large_file_name);
             $large_file_name = preg_replace("/[\\|\\?\"\\<\\>\\/\\*\\\\]+/", '', $large_file_name);
             //替换随机字符串
             $randNum = rand(1, 10000000000) . rand(1, 10000000000);
             if (preg_match("/\\{rand\\:([\\d]*)\\}/i", $large_file_name, $matches)) {
                 $large_file_name = preg_replace("/\\{rand\\:[\\d]*\\}/i", substr($randNum, 0, $matches[1]), $large_file_name);
             }
             $large_file_path = "{$path_info['dirname']}/{$large_file_name}_large.{$path_info['extension']}";
             $large_image->save($large_file_path, array('quality' => 100));
             $date = date('Ymd');
             $origin_dir_name = $path_info['dirname'];
             $new_directory = str_replace('/tmp', "/upload/carousel/{$date}", $origin_dir_name);
             $new_file = new File($large_file_path);
             $new_file->move($new_directory, "{$large_file_name}.{$path_info['extension']}");
             $container = $this->getContainer();
             $cdn_url = $container->getParameter('cdn_url');
             $new_uri = $cdn_url . "/upload/carousel/{$date}/" . $large_file_name . '.' . $path_info['extension'];
             @unlink($large_file_path);
             @unlink($file_path);
             return new JsonResponse(array('status' => 1, 'data' => array('picture_uri' => $new_uri, 'description' => $posts->get('description'), 'media_id' => $posts->get('media_id'))));
         } catch (\Exception $e) {
             return new JsonResponse(array('status' => 0, 'data' => $e->getMessage()));
         }
     } else {
         $cdn_url = $this->getContainer()->getParameter('cdn_url');
         $media_id = $request->query->get('media_id');
         $media = MediaModel::getMedia($media_id);
         $filename = str_replace($cdn_url, '', $media->source);
         $picture_file_path = APP_ROOT . '/app/cdn' . $filename;
         $file_info = pathinfo($picture_file_path);
         $picture_tmp_file_path = APP_ROOT . '/app/cdn/tmp/' . $file_info['basename'];
         $picture_tmp_url = $cdn_url . '/tmp/' . $file_info['basename'];
         try {
             $imagine = new Imagine();
             $image = $imagine->open($picture_file_path)->copy();
             $natural_size = $image->getSize();
             $scale_ratio = 779 / $natural_size->getWidth();
             $box = new Box($natural_size->getWidth(), $natural_size->getHeight());
             $box = $box->scale($scale_ratio);
             $image->resize($box);
             $image->save($picture_tmp_file_path);
         } catch (\Exception $e) {
             @unlink($picture_file_path);
             throw new \Exception($e->getMessage());
         }
         return $this->render('carousel/index.html.twig', array('image_attr' => array('natural_size' => $box, 'picture_url' => $picture_tmp_url, 'picture_path' => $picture_tmp_file_path), 'media' => $media));
     }
 }
示例#6
0
 protected function handle()
 {
     $tags = TagModel::allTags();
     $tree = StructureModel::getTree();
     $session = $this->getSession();
     $article = ArticleModel::getArticle($this->id);
     if (!$article) {
         $session->addFlash('error', '文章不存在');
         return new RedirectResponse($this->generateUrl('admin_www_article'));
     }
     // 文章已有的标签
     $article_tags = ArticleTagModel::allRelationship(function (QueryBuilder $qb) use($article) {
         /** @var ArticleModel $article */
         $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article->id);
     });
     $request = $this->getRequest();
     if ($request->getMethod() == 'POST') {
         $posts = $request->request;
         $db = WWWDatabase::getDb();
         try {
             $title = $posts->get('title');
             $content = $posts->get('content');
             $summary = $posts->get('summary');
             $structure_id = $posts->get('structure_id');
             $tags_id = $posts->get('tags');
             if (!$tags_id) {
                 $tags_id = array();
             }
             if (!$title) {
                 throw new \Exception('文章标题不能为空');
             }
             if (!$structure_id) {
                 throw new \Exception('请选择栏目');
             }
             $structure = StructureModel::getStructure($structure_id);
             if (!$structure) {
                 throw new \Exception('栏目不存在');
             }
             // 开启事务
             $db->transaction();
             // 创建文章
             $article->title = $title;
             $article->content = $content;
             $article->summary = $summary;
             $article->structureId = $structure_id;
             $article->updateTimestamp = time();
             // 保存
             // 解析媒体
             // 删除已有媒体
             $medias = MediaModel::allMedias(function (QueryBuilder $qb) use($article) {
                 $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article->id);
             });
             foreach ($medias as $media_info) {
                 MediaModel::deleteMedia($media_info['id']);
             }
             $cdn_url = $this->getContainer()->getParameter('cdn_url');
             $cdn_url = str_replace('/', '\\/', $cdn_url);
             // 解析图片
             $pictures = ArticleBusiness::parsePictures($cdn_url, $content);
             foreach ($pictures as $picture_source) {
                 $media = new MediaModel();
                 $media->type = 'picture';
                 $media->source = $picture_source;
                 $media->articleId = $article->id;
                 // 保存
                 MediaModel::createMedia($media);
             }
             ArticleModel::saveArticle($article);
             // 清空原有分类
             foreach ($article_tags as $article_tag) {
                 $tag_id = $article_tag['tag_id'];
                 $tag = TagModel::getTag($tag_id);
                 if ($tag) {
                     $tag->articleCount -= 1;
                     // 保存
                     TagModel::saveTag($tag);
                 }
                 // 删除关联
                 $article_tag = ArticleTagModel::getRelationship($article->id, $tag->id);
                 if ($article_tag) {
                     ArticleTagModel::deleteRelationship($article->id, $tag->id);
                 }
             }
             // 添加标签的文章数量
             foreach ($tags_id as $tag_id) {
                 $tag = TagModel::getTag($tag_id);
                 if (!$tag) {
                     throw new \Exception('标签不存在');
                 }
                 $tag->articleCount += 1;
                 // 保存tag标签
                 TagModel::saveTag($tag);
                 // 添加文章与标签的关系
                 $article_tag = new ArticleTagModel();
                 $article_tag->articleId = $article->id;
                 $article_tag->tagId = $tag->id;
                 ArticleTagModel::createRelationship($article_tag);
             }
             /*// 添加插件
               $plugin_ids = $posts->get('plugins');
               if (!$plugin_ids) {
                   $plugin_ids = array();
               }
               // 删除不要的插件
               foreach ($article_plugins as $article_plugin) {
                   if (!in_array($article_plugin['plugin_id'], $plugin_ids)) {
                       ArticlePluginModel::deleteRelationship($article_plugin['article_id'], $article_plugin['plugin_id']);
                       unset($article_plugins[$article_plugin['plugin_id']]);
                   }
               }
               // 检查插件是否存在
               foreach ($plugin_ids as $plugin_id) {
                   if (!isset($plugins[$plugin_id])) {
                       throw new \Exception("插件不存在或者未启用");
                   }
                   if (!isset($article_plugins[$plugin_id])) {
                       // 创建文章插件关系
                       $article_plugin = new ArticlePluginModel();
                       $article_plugin->articleId = $article->id;
                       $article_plugin->pluginId = $plugin_id;
                       // 存储默认数据
                       $article_plugin->sources = $plugins[$plugin_id]['sources'];
                       $article_plugin->applyCode = $plugins[$plugin_id]['default_code'];
                       $article_plugin->options = $plugins[$plugin_id]['default_options'];
                       // 保存
                       ArticlePluginModel::createRelationship($article_plugin);
                   }
               }*/
             $db->commit();
             $session->addFlash('success', '保存成功');
             return new RedirectResponse($this->generateUrl('admin_www_article_edit', array('id' => $this->id)));
         } catch (\Exception $e) {
             $db->rollback();
             $session->addFlash('error', $e->getMessage());
             return new RedirectResponse($this->generateUrl('admin_www_article_edit', array('id' => $this->id)));
         }
     }
     return $this->render('article/edit.html.twig', array('article' => $article, 'tree' => $tree, 'tags' => $tags, 'article_tags' => $article_tags));
 }
示例#7
0
 /**
  * 保存
  * @param MediaModel $media
  * @return MediaModel
  * @throws \Exception
  */
 public static function saveMedia(MediaModel $media)
 {
     return self::editMedia($media->toArray());
 }
示例#8
0
 protected function handle()
 {
     $tree = StructureModel::getTree();
     $tags = TagModel::allTags();
     $request = $this->getRequest();
     if ($request->getMethod() == 'POST') {
         $session = $this->getSession();
         $posts = $request->request;
         $db = WWWDatabase::getDb();
         try {
             $title = $posts->get('title');
             $content = $posts->get('content');
             $summary = $posts->get('summary');
             $structure_id = $posts->get('structure_id');
             if (!$title) {
                 throw new \Exception('文章标题不能为空');
             }
             if (!$structure_id) {
                 throw new \Exception('请选择栏目');
             }
             $structure = StructureModel::getStructure($structure_id);
             if (!$structure) {
                 throw new \Exception('栏目不存在');
             }
             $tags_id = $posts->get('tags');
             if (!$tags_id) {
                 $tags_id = array();
             }
             // 开启事务
             $db->transaction();
             // 创建文章
             $article = new ArticleModel();
             $article->title = $title;
             $article->content = $content;
             $article->summary = $summary;
             $article->structureId = $structure_id;
             $now = time();
             $article->createTimestamp = $now;
             $article->updateTimestamp = $now;
             // 保存
             $article = ArticleModel::createArticle($article);
             // 添加标签的文章数量
             foreach ($tags_id as $tag_id) {
                 $tag = TagModel::getTag($tag_id);
                 if (!$tag) {
                     throw new \Exception('标签不存在');
                 }
                 $tag->articleCount += 1;
                 // 保存tag标签
                 TagModel::saveTag($tag);
                 // 添加文章与标签的关系
                 $article_tag = new ArticleTagModel();
                 $article_tag->articleId = $article->id;
                 $article_tag->tagId = $tag->id;
                 ArticleTagModel::createRelationship($article_tag);
             }
             // 解析媒体
             $cdn_url = $this->getContainer()->getParameter('cdn_url');
             $cdn_url = str_replace('/', '\\/', $cdn_url);
             // 解析图片
             $pictures = ArticleBusiness::parsePictures($cdn_url, $content);
             foreach ($pictures as $picture_source) {
                 $media = new MediaModel();
                 $media->type = 'picture';
                 $media->source = $picture_source;
                 $media->articleId = $article->id;
                 // 保存
                 MediaModel::createMedia($media);
             }
             $db->commit();
             $session->addFlash('success', '创建成功');
             return new RedirectResponse($this->generateUrl('admin_www_article_edit', array('id' => $article->id)));
         } catch (\Exception $e) {
             $db->rollback();
             $session->addFlash('error', $e->getMessage());
             return new RedirectResponse($this->generateUrl('admin_www_article_add'));
         }
     }
     return $this->render('article/add.html.twig', array('tree' => $tree, 'tags' => $tags));
 }
示例#9
0
 protected function handle()
 {
     $request = $this->getRequest();
     $article = ArticleModel::getArticle($this->id);
     if (!$article) {
         $session = $this->getSession();
         $session->addFlash('error', '文章不存在');
         return new RedirectResponse($this->generateUrl('admin_www_article'));
     }
     $pictures = MediaModel::allMedias(function (QueryBuilder $qb) use($article) {
         $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article->id);
         $qb->andWhere($qb->expr()->eq('type', ':type'))->setParameter(':type', 'picture');
     });
     // 已有的轮播图
     $data = MediaModel::allMedias(function (QueryBuilder $qb) use($article) {
         $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article->id);
         $qb->andWhere($qb->expr()->eq('type', ':type'))->setParameter(':type', 'carousel');
     });
     $carousels = array();
     foreach ($data as $media) {
         $metadata = json_decode($media['metadata'], true);
         unset($media['metadata']);
         $original_media_id = $metadata['media_id'];
         $description = $metadata['description'];
         $media['description'] = $description;
         $carousels[$original_media_id] = $media;
     }
     if ($request->getMethod() == 'POST') {
         $posts = $request->request;
         $post_carousels = $posts->get('carousels');
         if (!$post_carousels) {
             $post_carousels = array();
         }
         $session = $this->getSession();
         $db = WWWDatabase::getDb();
         try {
             $db->transaction();
             // 清空已有轮播图
             $carousels = MediaModel::allMedias(function (QueryBuilder $qb) use($article) {
                 $qb->andWhere($qb->expr()->eq('article_id', ':article_id'))->setParameter(':article_id', $article->id);
                 $qb->andWhere($qb->expr()->eq('type', ':type'))->setParameter(':type', 'carousel');
             });
             foreach ($carousels as $carousel) {
                 MediaModel::deleteMedia($carousel['id']);
             }
             // 添加新轮播
             foreach ($post_carousels as $original_media_id => $info) {
                 $carousel = new MediaModel();
                 $carousel->articleId = $article->id;
                 $carousel->type = 'carousel';
                 $carousel->source = $info['source'];
                 $carousel->metadata = json_encode(array('media_id' => $original_media_id, 'description' => $info['description']));
                 // 保存
                 MediaModel::createMedia($carousel);
             }
             $db->commit();
             $session->addFlash('success', '操作成功');
         } catch (\Exception $e) {
             $db->rollback();
             $session->addFlash('error', $e->getMessage());
         }
         return new RedirectResponse($this->generateUrl('admin_www_article_carousel', array('id' => $article->id)));
     }
     return $this->render('article/carousel.html.twig', array('pictures' => $pictures, 'carousels' => $carousels, 'article' => $article));
 }