gist: 110019


  
      controller.rb #
    
    
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              class Controller < ActionController::Base
  def update_all
    keys = params.keys.find_all{ |k| k =~ /obj_\d+/ }
    keys.each do |key
      id = key.split("_").last
      obj = Object.find(id)
      obj.update_attributes(params[key])
    end
  end
end
            
          
      view.html.erb #
    
    
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              <% form_tag { :controller => "controller", :action => "update_all" } do %>
  <% @objects.each do |obj| %>
    <% fields_for "obj_#{obj.id}" do |f| %>
      <%= f.text_field :name %>
    <% end %>
  <% end %>
<% end %>
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