Question

我有一些带有nes物品的命令,这些物品被nes。如果认为是f或m_f或 @或der,则谨隐瞒所有有的物项:已登记的属性,即:

<% f或m_f或 @或der do |f| %>
  <% f.fields_f或 :items do |ff| %>
    <%# show all the items that have :registered == false %>
  <% end %>
<% end %>

或

def register
  @或der = Order.find(params[:id])
  # S或t out the :registered == true
end

Answer 1

你们可以尝试这样的事情:

<% form_for @order do |f| %>
  <% f.fields_for :items do |ff| %>
    <% next if ff.object.registered %>
    <%# show all the items that have :registered == false %>
  <% end %>
<% end %>

或您可设立第二个未登记物品协会:

class Order < ActiveRecord::Base
  has_many :unregistered_itmes, :class_name => "Item", :conditions => { :registered => false } 
end

因此,你可以做这样的事情:

<% form_for @order do |f| %>
  <% f.fields_for :unregistered_items do |ff| %>
    <%# show all the items that have :registered == false %>
  <% end %>
<% end %>

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