ruby on rails - How to scope validation to specific model in polymorphic association.? -

i have 2 model user , investment , 1 polymorhic model address

class user < activerecord::base     has_one :address, as: :addressable, dependent: :destroy     accepts_nested_attributes_for :address end  class investment < activerecord::base     has_many :addresses, as: :addressable, dependent: :destroy     accepts_nested_attributes_for :addresses, reject_if: lambda { |v| v['address'].blank? } && :address_blank, :allow_destroy => true end   class address < activerecord::base    belongs_to :addressable, polymorphic: true    validates :address, presence: true end 

now validates :address, presence: true applicable both investment user want applicable investment not user. how do that.

thanks.

in class investment add

validates :address_id, presence: true 

and remove bellow class address

validates :address, presence: true