可以将option_groups_from_collection_for_select与集合的范围一起使用吗?
而不是获得所有时期:
option_groups_from_collection_for_select(Modality.all, :periods, :name, :id, :name)
我想只获得活跃的那些:
Period.active
谢谢!
答案 0 :(得分:2)
NVM,
您在分组类中定义方法:
class Modality < ActiveRecord::Base
has_many :periods
def active_periods
periods.active
end
end
class Period < ActiveRecord::Base
belongs_to :modality
scope :active, ->{ where(active: true)}
end
option_groups_from_collection_for_select(Modality.all, :active_periods, :name, :id, :name)
希望它有所帮助。