protected function makeContent(Article $article, $content_id)
{
$poss_articles = $article->contents()->lists('id')->all();
if (in_array($content_id, $poss_articles)) {
$article->content_id = $content_id;
$article->save();
return $this->respondWithItem($article, new ArticleTransformer());
}
return $this->errorInternalError('The content specified to make active doesn\'t appear to be related to the article.');
}
