Ruby on rails 如何通过RubyonRails中的关联将记录添加到has_many中
我有这些模型Ruby on rails 如何通过RubyonRails中的关联将记录添加到has_many中,ruby-on-rails,ruby-on-rails-3,activerecord,Ruby On Rails,Ruby On Rails 3,Activerecord,我有这些模型 class EventGroups < ActiveRecord::Base has_many :festival_venues has_many :venues, :through => :festival_venues end class Venue < ActiveRecord::Base has_many :festival_venues has_many :event_groups, :through =&
class EventGroups < ActiveRecord::Base
has_many :festival_venues
has_many :venues, :through => :festival_venues
end
class Venue < ActiveRecord::Base
has_many :festival_venues
has_many :event_groups, :through => :festival_venues
end
class FestivalVenue < ActiveRecord::Base
belongs_to :event_group
belongs_to :venue
end
class EventGroups:节日场馆
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上课地点:节日场馆
结束
类FestivalVenue
我如何才能做到这一点?在下面的代码中,模型类名必须是单数。将类名
EventGroups
更改为EventGroups
。现在它将像一个符咒一样工作
class EventGroup < ActiveRecord::Base
has_many :festival_venues, dependent: :destroy
has_many :venues, :through => :festival_venues, :dependent => :destroy
end
class Venue < ActiveRecord::Base
has_many :festival_venues
has_many :event_groups, :through => :festival_venues
end
class FestivalVenue < ActiveRecord::Base
belongs_to :event_group
belongs_to :venue
end
class EventGroup < ActiveRecord::Base
has_many :festival_venues, dependent: :destroy
has_many :venues, :through => :festival_venues, :dependent => :destroy
end
class EventGroup:festival\u场馆,:依赖=>:destroy
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剩下的代码是好的
class Venue < ActiveRecord::Base
has_many :festival_venues
has_many :event_groups, :through => :festival_venues
end
class FestivalVenue < ActiveRecord::Base
belongs_to :event_group
belongs_to :venue
end
上课地点:节日场馆
结束
类FestivalVenue
希望这会有帮助。谢谢在下面的代码中,模型类名必须是单数。将类名
EventGroups
更改为EventGroups
。现在它将像一个符咒一样工作
class EventGroup < ActiveRecord::Base
has_many :festival_venues, dependent: :destroy
has_many :venues, :through => :festival_venues, :dependent => :destroy
end
class EventGroup:festival\u场馆,:依赖=>:destroy
结束
剩下的代码是好的
class Venue < ActiveRecord::Base
has_many :festival_venues
has_many :event_groups, :through => :festival_venues
end
class FestivalVenue < ActiveRecord::Base
belongs_to :event_group
belongs_to :venue
end
上课地点:节日场馆
结束
类FestivalVenue
希望这会有帮助。谢谢Hi@Marek当我按照上面的回答做的时候,我没有发现“事件组”这个名字的关联。它已经被定义了吗?错误。@Gagan我编辑了我的答案-
EventGroup
模型的命名不正确。class EventGroup:festival\u场馆,:dependent=>:destroy end
这里有很多:节日场馆,dependent::destroy
应该是有很多:节日场馆,:dependent=>:destroy
嗨@Marek当我按照你上面的回答做时,我找不到“事件组”这个名称的关联。它已经被定义了吗?错误。@Gagan我编辑了我的答案-EventGroup
模型的命名不正确。class EventGroup:festival\u场馆,:dependent=>:destroy end
这里有很多:节日场馆,依赖::destroy
应该是有很多:节日\u场馆,:dependent=>:destroy