Question

这是我第一次在这里发帖。

我在html中有九个按钮传递给ruby on rails。

这是我要循环的参数：

Button.new(:title => params[:button_title_1], :order => 1, :icon_url => params[:button_icon_1], :navigation_id => @navigation.id, 
                   :next_navigation => params[:selected_navigation_1].to_i, :next_page => params[:selected_page_1].to_i)

我想将数字1转换为i并将其置于循环下方：

@buttonNumber.each do |i|

end

请帮忙！谢谢！

Answer 1

@buttonNumber.each do |i|
  Button.new(:title => params["button_title_#{i}".to_sym], 
             :order => 1, 
             :icon_url => params["button_icon_#{i}".to_sym], 
             :navigation_id => @navigation.id, 
             :next_navigation => params["selected_navigation_#{i}".to_sym].to_i, 
             :next_page => params["selected_page_#{i}".to_sym].to_i)
end

“to_sym”是可选的，因为params集合是HashWithIndifferentAccess，我把它用于更好地理解其他情况。

我怎样才能循环轨道参数？

1 个答案: