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铁路阵列有助于选择一栏
原标题:Rails array help selecting column

我有这个阵列:

[:dk, #<Domain dk: 8, id: 12, se: 5, com: 5>]

我愿选择:8?

因此,投入是:8

我认为:

<% @prices.each do |price| %>
<%= price %><br />
<% end %>

产出:

[:dk, #<Domain dk: 8, id: 12, se: 5, com: 5>]
[:com, #<Domain dk: 8, id: 12, se: 5, com: 5>]

我的控制者:

def domain
  country_codes = %w[ dk com ]

  @domain = "asdsad"

  @results = { }
  @prices = { }

  country_codes.each do |cc|
    @results[cc] = Whois.whois("#{@domain}.#{cc}")
    @prices[cc.to_sym] = Domain.order(cc).first
  end
  render :layout => false
end
最佳回答

你没有阿雷,你有哈希。

这是:

<% @prices.each do |cc,domain| %>
  <%= domain.send(cc) %><br />
<% end %>

因此:

  • first: #<Domain dk: 8, id: 12, se: 5, com: 5>.send(:dk) # => 8
  • second: #<Domain dk: 8, id: 12, se: 5, com: 5>.send(:com) # => 5

Upon request, further explanation.

  • 页: 1

  • 然后由您填写:@prices[cc.to_sym] = 域名。

添加散列一个物体的最新手段:Domain.order(cc).first ,其中的关键是:cc.to_sym

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