laravel goutteノードリストが空です

Question

goutteに問題があります。一部のコンテンツには画像がありますが、画像がない場合は無視して画像を保存せずに続行してくださいそれがあれば、それを保存してください。私は出力を持っている現時点では

$crawler->filter('div[id=content]>.teaser-50')->each(function ($node, $key) { 
     $title = $node->filter('.plain')->text(); 
     $datepublished = $node->filter('.dateonline')->text(); 
     $description = $node->filter('.teaser-link')->text(); 
     $link = $node->filter('a')->link(); 
     if(!empty ($link_r = $link->getUri())) { 
     $image = $node->filter('img')->image(); 
     $image_s = $image->getUri(); 
     $filename = basename($image_s); 
     $image_path = ('news-gallery/' . $filename); 
     Image::make($image_s)->save(public_path('news-gallery/' . $filename)); 
     } 
     $id = 1+ $key + 1; 
     $news = News::where('id', $id)->first(); 
     // if news is null 
     if (!$news) { 
      $news = new News(); 
     } 
     $news->title = $title; 
     $news->datepublished = $datepublished; 
     $news->description = $description; 
     $news->link = $link_r; 
     $news->image = $image_path; 
     $news->save(); 
     $this->info('Scraping done succesfully'); 
    }); 

：

λ php artisan scrape:news 
Scraping done succesfully 
Scraping done succesfully 
Scraping done succesfully 
Scraping done succesfully 


    [InvalidArgumentException] 
    The current node list is empty. 

現在のノードリストが空である、これは解決することができるか、イメージを持っていない最初のニュースで起こりますか？

Answer 1

try { 
     $title = $node->filter('.plain')->text(); 
     $datepublished = $node->filter('.dateonline')->text(); 
     $description = $node->filter('.teaser-link')->text(); 
     $link = $node->filter('a')->link(); 
     if(!empty ($link_r = $link->getUri())) { 
     $image = $node->filter('img')->image(); 
     $image_s = $image->getUri(); 
     $filename = basename($image_s); 
     $image_path = ('news-gallery/' . $filename); 
     Image::make($image_s)->save(public_path('news-gallery/' . $filename)); 
     } 
     $id = 1+ $key + 1; 
     $news = News::where('id', $id)->first(); 
     // if news is null 
     if (!$news) { 
      $news = new News(); 
     } 
     $news->title = $title; 
     $news->datepublished = $datepublished; 
     $news->description = $description; 
     $news->link = $link_r; 
     $news->image = $image_path; 
     $news->save(); 
     $this->info('Scraping done succesfully'); 
} catch (InvalidArgumentException $e) { 
     // do something else when the error occurs... 
     // go to a different page? 
     // scrape different elements? 
}