在rails上的ruby中添加哈希值

Question

我有一個問題，在rails上的ruby中添加一個新的鍵和值。 該方法看起來像這樣，有兩個調試打印，只需添加索引+ 1作為值的提供程序密鑰，以便稍后訪問具有正確ID的提供程序。

search_result.each_with_index do |articles, index|
  puts "merge-articles: #{articles}"
  articles.each{ |article| article[:provider] = index + 1;}
  puts "merge-articles(later): #{articles}"
end                                        

我得到了看跌期權的輸出，這看起來非常好我的想法：

merge-articles: [{:ean=>"9780234474278", :author=>"Dan Brown", :name=>"The Da Vinci Code", :price=>19.65, :image=>"www.google.de/image.png"}]
merge-articles(later): [{:ean=>"9780234474278", :author=>"Dan Brown", :name=>"The Da Vinci Code", :price=>19.65, :image=>"www.google.de/image.png", :provider=>2}]

僅測試密鑰是否存在的規范會收到此錯誤：

 Failure/Error: HomeController.merge(@no_same_items_merge).each do |item|
 TypeError:
   can't convert Symbol into Integer
 # ./app/controllers/home_controller.rb:41:in `[]='
 # ./app/controllers/home_controller.rb:41:in `block (2 levels) in merge'
 # ./app/controllers/home_controller.rb:41:in `each'
 # ./app/controllers/home_controller.rb:41:in `block in merge'
 # ./app/controllers/home_controller.rb:39:in `each'
 # ./app/controllers/home_controller.rb:39:in `each_with_index'
 # ./app/controllers/home_controller.rb:39:in `merge'
 # ./spec/controllers/home_controller_spec.rb:104:in `block (5 levels) in <top (required)>'

編輯：RSpec測試如下所示：

    it "should return an array of right formatted hashes" do
      HomeController.merge(@no_same_items_merge).each do |item|
        item.should have_key(:name)
        item.should have_key(:ean)
        item.should have_key(:author)
        item.should have_key(:description)
        item.should have_key(:url)
        item.should have_key(:prices)
        item.should have_key(:images)
      end
    end   

謝謝你的幫助！

Answer 1

在規范中，將article設置為Array ，而不是Hash 。