ruby-on-rails - rails : elegantly reduce duplication when using json to create objects

Question

我在 json 中获取数据以在我的 webapp 中创建，就像这样

response.each do |article|
    title = article['title']
    url = article['url']
    content = article['content']
    image_url = article['image_url']
    source = article['source']
    created_at = article['created_at']
    twitter_share = article['twitter_share']
    facebook_share = article['facebook_share']
    pocket_share = article['pocket_share']
    article = Article.new(title: title, url: url, image_url: image_url, content: content, created_at: created_at, source: source,
                    twitter_share: twitter_share, facebook_share: facebook_share, pocket_share: pocket_share)
    if article.save
      puts article.title
    end
  end

如你所见，有很多重复，我该如何优雅地减少这些重复？

Answer 1

文章似乎是一个散列，所以你可以简单地做

response.each do |article|
  article = Article.new(article)
  if article.save
    puts article.title
  end
end

如果文章包含其他属性，您可以删除它们:

allowed = ['title', 'url', 'source']
response.each do |article|
  article = Article.new(article.slice(*allowed))
  if article.save
    puts article.title
  end
end