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如何在Rails 3.x中更新加載關聯數據?Rails:如何更新負載上的關聯數據?
當我加載股票代碼時,如果它們過期,我想更新它的報價。由於ActiveRecord沒有像after_load這樣的回調,所以這樣做的正確方法是什麼?
我的僞代碼看起來像
class Stock < ActiveRecord::Base
has_many :quotes, :limit => 15, :order => 'date desc'
attr_accessible :symbol
after_load :update_history
#correct code is (Thanks Dutow)
after_initialize :update_history
def update_history
if (quotes.count > 0)
today = Time.now
get_and_store_history unless (quotes[0].updated_at >= today.beginning_of_day && quotes[0].updated_at <= today.end_of_day)
end
end
def get_and_store_history
#Update quotes
end
end