Ruby on rails 修改关联模型的Activerecord回调
我有两个有关联的模型。我想先在一个模型中设置保存,然后再修改另一个模型。以下是我所拥有的:Ruby on rails 修改关联模型的Activerecord回调,ruby-on-rails,ruby-on-rails-3,activerecord,Ruby On Rails,Ruby On Rails 3,Activerecord,我有两个有关联的模型。我想先在一个模型中设置保存,然后再修改另一个模型。以下是我所拥有的: class Event < ActiveRecord::Base belongs_to :leads end class Lead < ActiveRecord::Base before_save :update_event has_many :events, :dependent => :destroy accepts_nested_attributes_for :
class Event < ActiveRecord::Base
belongs_to :leads
end
class Lead < ActiveRecord::Base
before_save :update_event
has_many :events, :dependent => :destroy
accepts_nested_attributes_for :events, :reject_if => lambda { |a| a[:title].blank? }
def update_event
self.events.title = "Testing to set the event title"
end
end
我得到的错误如下:
undefined method `title=' for #<ActiveRecord::Relation:0x007fed3229d610>
的未定义方法'title='#
我显然做错了。如果有任何帮助,我将不胜感激。我仍在寻找解决方案,如果我找到了,我会自己更新
谢谢大家! 每个潜在客户都有多个活动。因此,在您的情况下,您希望:
before_save :update_events
def update_events
events.each do |event|
event.title = "Testing to set the event title"
end
end
如何修改该代码,使其仅更改当前事件。每个Lead都有许多事件,上面的代码更改了所有事件的标题,而不是刚刚添加的新事件。好的,我将代码更改为self.events.last.title=“Testing to set the event title”,这对我很有用。除非你能想出更好的办法。
before_save :update_events
def update_events
events.each do |event|
event.title = "Testing to set the event title"
end
end